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1
Luchyn, I. S., D. P. Perih, and Yu M. Lunyk. "Biological features of the formation of meat productivity of rabbits of chin-chilla breed depending on crossing with meat breeds." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 25, no. 98 (March 31, 2023): 70–76. http://dx.doi.org/10.32718/nvlvet-a9812.
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Rabbit breeding is a special branch of animal husbandry characterized by high fertility and growth intensity. The main way of intensification of rabbit farming involves such selection measures that adapt rabbit populations of keeping in industrial conditions, ensure high reproductive properties of female rabbits, preservation of rabbits in nests, high growth rate, fattening and meat qualities of animals. The research was conducted on the basis of the experimental rabbit farm of the Cherkasy Research Station of Bioresources of the National Academy of Sciences on the population of female chinchilla (Chinchilla) rabbits and males of the Gray giant rabbit (Gray giant rabbit), New Zealand white rabbit (New Zealand white rabbit) and young rabbits obtained from these three combinations. As the result of the conducted research, it was found that under the conditions of intensive production of rabbit meat, the reproductive qualities of female chinchilla rabbits in combination with males of the Gray giant and New Zealand white rabbits breeds increase, namely: high fertility – on 1.8–5.2 %; milk yield – on 1.8–7.4 %. The weight of the nest at weaning was probably (P < 0.001) higher in female rabbits of the combination Chinchilla x New Zealand white rabbit and was 5.29 ± 0.13 kg, which is 869 g more than the purebred peers of the chinchilla breed and 380 g more than the combination Chinchilla x Great giant rabbit. The best indicators of fattening and meat productivity were found in young rabbits of 1/2Chinchilla 1/2Gray giant rabbit and 1/2Chinchilla 1/2New Zealand white rabbit origin. The fattening indicators of the rabbits of these groups compared to the rabbits of the control group accordingly increased: live weight at 90 days of age – on 4.0 and 3.8 % (Р < 0.05); average daily increases – on 4.7 and 5.4 % (Р < 0.05; Р < 0.01); waist width – on 5.6 and 8.7 % (Р < 0.01). The research also revealed that the group of young rabbits 1/2Chinchilla 1/2New Zealand white rabbit by origin had a higher slaughter yield and the indicators of which exceeded and rabbits of the second group ( 1/2Chinchilla 1/2Gray giant rabbit on 3.6% and the first (Chinchilla) – on 4.1 %, and the expenses of feed per 1 kg of increase by group was 3.85 accordingly; 3.75; 3.7 kg. Crossbred rabbits 1/2Chinchilla 1/2New Zealand white rabbit and 1/2Chinchilla 1/2Gray giant rabbit according to this indicator prevailed over purebred peers (Chinchilla) on 2.6 and 3.9 %, accordingly.
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Bojko, O. V., D. P. Perih, O. F. Honchar, and I. S. Luchyn. "Efficiency of using industrial crossbreeding to increase rabbits meat productivity." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 24, no. 97 (November 5, 2022): 110–16. http://dx.doi.org/10.32718/nvlvet-a9719.
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Rabbit farming is a powerful source of dietary meat, rabbit fluff, and rabbit skins. The research was conducted at the rabbit farm of the Precarpathian State Agricultural Research Station of the Institute of Agriculture of the Carpathian Region of the National Academy of Agrarian Sciences. The article describes the creation of new highly productive genetic populations of rabbits identified as the best options for crossing maternal and paternal forms. Three breeds of rabbits and their hybrids were used for industrial crossbreeding, which are maximally suitable for industrial conditions of intensive production of rabbit meat: rabbit breed Poltava silver, Soviet chinchilla, and New Zealand white rabbit. After the result of the conducted research was found that the combination of crossbred females of the rabbit breed Poltava silver, Soviet chinchilla, and New Zealand white rabbit with purebred males of the Soviet chinchilla and New Zealand white rabbit has a positive effect on the reproductive qualities of female rabbits. Due to combinatorial heredity and compliance with the conditions of keeping in the farm of the Cherkasy Research Station, the best genetic combinations of rabbits, such as 1/2 rabbit breed Poltava silver 1/2 New Zealand white rabbit x New Zealand white rabbit, and 1/2 rabbit breed Poltava silver, 1/2 Soviet chinchilla x New Zealand white rabbit prevails the control group (rabbit breed Poltava silver x rabbit breed Poltava silver) by multiple fertility on 9.2 %, by high fertility on 5.1 %, milk production probably on 8.5 % and the number of weaned rabbits on 14.0 % (P < 0.05), the weight of the nest that was weaned at 28 days of age on 41.2 % (P < 0.01; P < 0.001). The local young rabbits of the third and fourth research groups (1/4 rabbit breed Poltava silver 1/4 New Zealand white rabbit, 2/4 Soviet chinchilla, and 1/4 rabbit breed Poltava silver 3/4 New Zealand white rabbit) at 28 days of age probably prevailed (P < 0.001; P < 0.01)) analogs of the first control group by the indicator of live weights accordingly of 107 and 83 grams, The highest intensity of development up to 28 days of age (P < 0.001) had the young hybrid rabbits of origin 1/4 rabbit breed Poltava silver 1/4 Soviet chinchilla 2/4 New Zealand white rabbit (609 ± 28.26 g), which has more control on 116 gram. By the indicator of live weight at 90 days of age, the local young rabbits of the second research group (1/4 rabbit breed Poltava silver 3/4 Soviet chinchilla) probably (P < 0.05) prevailed over the young rabbits of the first control group (rabbit breed Poltava silver) on 117 and the third research group (1/4 rabbit breed Poltava silver 1/4 New Zealand white rabbit 2/4 Soviet chinchilla) – on 156, and the fourth (1/4 rabbit breed Poltava silver 3/4 New Zealand white rabbit) – on 80 and the fifth (1/4 rabbit breed Poltava silver 1/4 Soviet chinchilla 2/4 New Zealand white rabbit) – on 207 grams. Better tendency to high lifetime fattening, meat, and constitutional indicators had young hybrid rabbits of origin: 1/4 rabbit breed Poltava silver 3/4 New Zealand white rabbit, 1/4 rabbit breed Poltava silver 1/4 Soviet chinchilla 2/4 New Zealand white rabbit.
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Mintorini, Ery, and Wildan Mahmud. "Rabbit Type Classification Using Multi-SVM Based on Feature Extraction." Journal of Applied Intelligent System 4, no. 2 (March 6, 2020): 96–103. http://dx.doi.org/10.33633/jais.v4i2.3381.
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Rabbits reputation of being cute, fluffy, cuddly critters lend then to being a popular choice for children pets. But in raising a rabbit is not easy, this depends on the type of rabbit. Rabbits that commonly pet are Rex Rabbits, American Rabbits, and Giant Rabbits. Rex Rabbits itself has some species including Rex Amber and Rex Lilac species, Giant Rabbits rabbits includes Giant Chekered rabbit, Harleyquin, dan American White Rabbit. Classification technology can be used to help the classification process of rabbits are Multi-SVM method and image feature extraction to classify rabbit species. Feature extraction used in this study is mean, variance, skewness, kurtosis, entropy. The five features are classified with Multi-SVM. The data used in this study are 125 images, consisting of 100 training images and 25 test images. The accuracy of this method reached 92%. Keywords – Classification, Multi-SVM, Rabbit, Feature Extraction
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Croft, J. D., P. J. S. Fleming, and R. van de Ven. "The impact of rabbits on a grazing system in eastern New South Wales.1. Ground cover and pastures." Australian Journal of Experimental Agriculture 42, no. 7 (2002): 909. http://dx.doi.org/10.1071/ea01106.
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Although there have been a number of studies that have examined the effects of rabbits on pasture, the relationship between rabbit density and pasture degradation caused by rabbits has never been quantified. An experiment was conducted at Cowra, New South Wales, from October 1984 to October 1987, to determine the impact various densities of rabbits have on pasture composition, indices of pasture biomass and ground cover. Using plots set stocked with the equivalent of 8 sheep/ha (the district average) and 4 densities of rabbits as treatments, 0,�24, 48 and 72 rabbits/ha, the consequences of rabbit grazing were investigated.Pasture composition changed with season, year and rabbit density. Cumulative effects were also evident. Rabbits severely depleted improved pastures of legumes (subterranean clover particularly), with grass cover increasing proportionate to rabbit density. In the final year of the experiment, the rabbit-free treatment had 31% legumes and 25.2% grasses, whereas the highest rabbit density treatment had 6.2% legumes and 47.4% grasses. Indices of pasture biomass were highest in the zero rabbits/ha treatment and lowest in the 72 rabbits/ha treatment. More bare soil was exposed in the highest rabbit density treatment. Once seasonal and year effects were accounted for, the relationship between rabbit density and percentage damage was positive.
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Pustova, N., and Z. Pustova. "PRODUCTION OF ORGANIC GOODS OF THE RABBIT BREEDING AT DIFFERENT TECHNOLOGIES OF MAINTENANCE OF RABBITS." Scientific and Technical Bulletin оf State Scientific Research Control Institute of Veterinary Medical Products and Fodder Additives аnd Institute of Animal Biology 24, no. 2 (November 30, 2023): 182–92. http://dx.doi.org/10.36359/scivp.2023-24-2.20.
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For the prospects of the rabbit breeding of present time optimal direction of development are individual and farmer economies, with the middle population of doe-rabbit. For the profitable conduct of the rabbit breeding except general principles of maintenance and growing, it is expedient to take into account the pedigree features of rabbits. Most distribution for the rabbit breeders of our country meat and hide of breed got: grey and white giants, butterfly, silvery, less popularity is used by the meat breeds of rabbits: New Zealand white and Californian.
Main advantage of the rabbit breeding are an economy of areas and absence of capital apartments for growing of population of rabbits, in the modern rabbit breeding the systems of maintenance of rabbits are used in cages – outside, with the partial or complete process of mechanization: feeding and give to drink, moving away of wastes. At cellular maintenance of rabbits the most rational organization of works is provided on a supervision and reproduction. Cellular maintenance of rabbits gives an opportunity to carry out and control all processes and effectively to conduct veterinary and prophylactic measures. The table of contents of rabbits in cages provides a receipt from them of high-quality selfish products and carcass of kind fattened. For growing of different breeds of rabbits optimal economic indicators are the breeding of 30 female rabbits and more, at such population recoupment presents three years.
The efficiency of management and high profitability of organic rabbit farms is ensured thanks to small capital investments in equipment and cages, early maturity and multi-fertility of rabbits, intensive growth of rabbits and rapid change of generations, obtaining products of high quality and quantity in a short time. The use of modern improved cage systems, high-quality feed and balanced rations for sexual age groups of rabbits allows to optimize the operating costs of the rabbit farm, and properly adjusted logistics of rabbit breeding products ensures constant profit at optimal profitability.
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Mutze, G., P. Bird, S. Jennings, D. Peacock, N. de Preu, J. Kovaliski, B. Cooke, and L. Capucci. "Recovery of South Australian rabbit populations from the impact of rabbit haemorrhagic disease." Wildlife Research 41, no. 7 (2014): 552. http://dx.doi.org/10.1071/wr14107.
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Context Recovery of Australian rabbit populations from the impact of rabbit haemorrhagic disease virus (RHDV) contrasts with more prolonged suppression of wild rabbits in Europe, and has been widely discussed in the scientific community, but not yet documented in formal scientific literature. The underlying causes of recovery remain unclear, but resistance to RHDV infection has been reported in laboratory studies of wild-caught rabbits. Aims We document numerical changes in two South Australian wild rabbit populations that were initially suppressed by RHDV, and examine serological data to evaluate several alternative hypotheses for the cause of recovery. Methods Rabbit numbers were assessed from spotlight transect counts and dung mass transects between 1991 and 2011, and age and RHDV antibody sero-prevalence were estimated from rabbits shot in late summer. Key results Rabbit numbers were heavily suppressed by RHDV between 1995 and 2002, then increased 5- to 10-fold between 2003 and 2010. During the period of increase, annual RHDV infection rates remained stable or increased slightly, average age of rabbits remained stable and annual rainfall was below average. Conclusions Rabbit populations recovered but neither avoidance of RHDV infection, gradual accumulation of long-lived RHD-immune rabbits, nor high pasture productivity were contributing factors. This leaves increased annual survival from RHDV infection as the most likely cause of recovery. Implications Previously documented evidence of resistance to RHDV infection may be of little consequence to post-RHD recovery in rabbit numbers, unless the factors that influence the probability of infection also shape the course of infection and affect survival of infected rabbits.
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Oxley, J. A., A. Previti, A. Alibrandi, E. F. Briefer, and A. Passantino. "A Preliminary internet survey of pet rabbit owners’ characteristics." World Rabbit Science 23, no. 4 (December 23, 2015): 289. http://dx.doi.org/10.4995/wrs.2015.3771.
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<p>This study aimed to conduct a preliminary survey to investigate basic ownership factors, frequency of microchipping and insurance and views of pet rabbit owners n these areas and general rabbit management. More specifically, we aimed to investigate whether owners possess insurance, whether their rabbits are microchipped, and owners’ views on the recommendations relating to rabbits (e.g. recommended enclosure sizes) and the law. A questionnaire was designed and promulgated through social media sites and rabbit forums. A total of 1183 responses were received. Just over 29% of respondents sourced their rabbits through rescue centres. 73.9% (867/1174) of owners stated that they had no pet insurance for their rabbits. Concerning microchips, 78.3% (919/1173) of rabbits were not microchipped, while 21.7% (254/1173) were. This preliminary study found that the majority of individuals are of the opinion that the relevant law is insufficiently publicised. A more detailed study would be beneficial to investigate and provide further insight into rabbit owners and their views and concerns for rabbits. The results of such a study could help formulate rabbit-related information and guidelines which in turn could have a direct impact on pet rabbit welfare.</p>
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Zhang, Wenjing, Yasushi Ami, Yuriko Suzaki, Michiyo Kataoka, Naokazu Takeda, Masamichi Muramatsu, and Tiancheng Li. "A Cross-Species Transmission of a Camel-Derived Genotype 8 Hepatitis E Virus to Rabbits." Pathogens 10, no. 11 (October 24, 2021): 1374. http://dx.doi.org/10.3390/pathogens10111374.
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Novel genotypes of hepatitis E virus (HEV), i.e., HEV-5, HEV-7, and HEV-8, have been identified in wild boar, dromedary camels, and Bactrian camels, respectively, and they transmit to cynomolgus monkeys in a trans-species manner, raising the potential for zoonotic infection. Rabbits are the natural reservoir for rabbit HEV, but they are also susceptible to HEV-3 and HEV-4. It has been unknown whether rabbits are susceptible to HEV-5, HEV-7, and HEV-8. To investigate the infectivity of novel HEVs in rabbits and to assess whether rabbits are appropriate animal models for these HEVs, we inoculated Japanese white rabbits with HEV-5, HEV-7, and HEV-8, respectively. We observed that viral RNA was present in the fecal specimens of the HEV-8-inoculated rabbits and anti-HEV IgG antibodies were present in its sera, although anti-HEV IgM was undetectable and no significant elevation of ALT was observed. These results indicated that HEV-8 crossed species and infected the rabbits. No evidence for replication was observed in HEV-5 and HEV-7, suggesting that rabbits are not susceptible to these genotypes. The antibodies elicited in the HEV-8-infected rabbits did not protect them from the rabbit HEV challenge, suggesting that the antigenicity differs between HEV-8 and rabbit HEV. Antigenic analyses demonstrated that anti-HEV-8 antibodies reacted more strongly with homologous HEV-8 virus-like particles (VLPs) compared to heterologous rabbit HEV VLPs, but anti-rabbit HEV antibody had similar reactivity to the VLPs of rabbit HEV and HEV-8, suggesting that HEV-8 lacks some epitope(s) that exist in rabbit HEV and induced the neutralizing antibodies against rabbit HEV.
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Hu, Jiafen, Xuwen Peng, Lynn R. Budgeon, Nancy M. Cladel, Karla K. Balogh, and Neil D. Christensen. "Establishment of a Cottontail Rabbit Papillomavirus/HLA-A2.1 Transgenic Rabbit Model." Journal of Virology 81, no. 13 (April 25, 2007): 7171–77. http://dx.doi.org/10.1128/jvi.00200-07.
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ABSTRACT Three transgenic rabbit lines that express a well-characterized human major histocompatibility complex class I (MHC-I) gene (HLA-A2.1) have been established. All three lines carry the HLA-A2.1 heavy chain and are able to pass the transgene to their offspring with both the outbred and the inbred EIII/JC genetic background. HLA-A2.1 colocalizes exclusively with rabbit MHC-I on the cell surfaces. These HLA-A2.1 transgenic rabbits demonstrated infection patterns similar to those found after cottontail rabbit papillomavirus (CRPV) challenge when compared with results in normal rabbits, although higher regression rates were found in HLA-A2.1 transgenic rabbits. Because the CRPV genome can accommodate significant modifications, the CRPV/HLA-A2.1 rabbit model has the potential to be used to screen HLA-A2.1-restricted immunogenic epitopes from human papillomaviruses in the context of in vivo papillomavirus infection.
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Moto, Edward. "Potential, challenges and prospects of rabbit farming in urban and peri-urban areas of Dodoma city, Tanzania." World Rabbit Science 32, no. 1 (March 28, 2024): 31–42. http://dx.doi.org/10.4995/wrs.2024.20238.
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This study highlights the current status of rabbit production, potential challenges facing the industry and the prospects for rabbit farming in Dodoma city, Tanzania. Data from 60 individuals keeping rabbits were collected through a structured questionnaire and direct observation. Results showed that 60% of the respondents were men and 40% women. Rabbits were kept mainly as a source of meat for families and income generation. Main sources of rabbit stock were local breeders (55%) and missionaries (25%), while the remainder were from agricultural institutes. The dominant rabbit breeds reared were California white (50%), New Zealand white (30%), Chinchilla (10%) and Dutch (10%). Ninety-five percent of the farmers kept rabbits in cages, while 5% confined them at night and let them out during the day to forage for feed. Fifteen percent of the respondents fed commercial rabbit pellets, 5% vegetables and kitchen waste only, whereas 80% fed both rabbit pellets, vegetables and kitchen waste. The number of rabbits kept by an individual farmer ranged from 5 to 180, with mean stock size of 22.80±11.20 (mean±standard deviation). Rabbits were sold at 8 to 12 wk of age and each rabbit was sold for 20 000 to 30 000 Tanzanian shillings (8.00 – 12.00 USD). Major challenges in rabbit production were lack of feed resources, lack of readily available market, poor quality of breeding stock, low knowledge of rabbit production techniques and lack of technical support from extension services. Although rabbit farming in Dodoma is carried out at subsistence level, it is associated with a decrease in poverty among urban and peri-urban farmers. In conclusion, rabbit production in urban and peri-urban areas of Tanzania has the potential to contribute to food and nutrition security and poverty alleviation, thus improving living standards.
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Foran, BD, WA Low, and BW Strong. "The Response of Rabbit Populations and Vegetation to Rabbit Control on a Calcareous Shrubby Grassland in Central Australia." Wildlife Research 12, no. 2 (1985): 237. http://dx.doi.org/10.1071/wr9850237.
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The effect of rabbit control methods on rabbit populations and subsequent changes in vegetation were assessed over 2 years on a calcareous shrubby grassland in central Australia. Warren ripping and fumigating decreased mean population levels to four rabbits per kilometre of spotlight transect, and 1080 poisoning decreased mean levels to 9 km-1, compared to the untreated levels of 20 km-l. Release of European rabbit fleas did not have any significant effect on rabbit populations. In the untreated rabbit populations, 68% of the fluctuation in numbers was accounted for by total rainfalls in the previous summer and the previous winter, and by a forage greenness rating. Experimental control of rabbits combined with exclosures indicated that grazing by high numbers of rabbits reduced the frequency of Enneapogon spp. at one site whereas levels rose in all other sites during the two years of good rainfall. The frequency of several species, such as Chenopodium cristatum, Phyllanthus rhytidospermus and Portulaca oleracea, was highly correlated with rabbit density in the previous year, suggesting that rabbit grazing promotes their increase. Grazing'by rabbits alone depressed standing biomass in the following season by 300 kg ha-1 from a maximum 1200 kg ha-1 within the exclosures. Cattle grazing further decreased biomass by 150 kg ha-1. Seedlings of Acacia kempeana were almost absent in those areas open to rabbit grazing, but they were reasonably dense where rabbits were excluded. However, the vegetation response over the 2 years of experiment was due mainly to seasonal changes rather than rabbit control, and does not justify the expense of rabbit control at this stage. Substantial improvement in vegetation composition over the longer term may alter this conclusion.
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Fleming, P. J. S., J. D. Croft, and H. I. Nicol. "The impact of rabbits on a grazing system in eastern New South Wales. 2. Sheep production." Australian Journal of Experimental Agriculture 42, no. 7 (2002): 917. http://dx.doi.org/10.1071/ea01107.
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Much research, time and money have been invested in the control of rabbits in Australia, yet the relationship between rabbit density and livestock production losses has not been quantified. We experimentally investigated the variations in sheep production parameters caused by 4 densities of rabbits, 0, 24, 48 and 72 rabbits/ha. Medium to strong wool merino wethers were run at a constant stocking rate in replicated plots with rabbits at 4� different densities. Sheep liveweight and body condition and wool production variables were measured over 3�years. Low to medium densities of rabbits were not found to reduce liveweights of wethers, whereas wethers run with the high density of rabbits were significantly lighter. The presence of rabbits reduced the body condition of sympatric sheep with the lowest body condition recorded at the high rabbit density. Mean greasy fleece weights, wool yields and clean-fleece weights were significantly different between densities of rabbits. Wethers run with the high rabbit density grew less wool than the wethers run with the other 3 densities of rabbits. The cumulative gross return per ha from wool production was highest for the medium rabbit density and lowest at high rabbit density. At the conclusion of this short-term experiment, the presence of some rabbits enhanced returns from wool production because of lower fibre diameter and comparable clean-fleece weights of fleeces grown at low and medium rabbit densities. These production characteristics might have been caused by synergistic effects on pasture growth or a sheep stocking rate that was too conservative for the prevailing seasonal conditions. At high rabbit density, competition for pasture between rabbits and sheep overrode possible synergistic and understocking effects. The economic implications of the presence of rabbits on merino sheep production are discussed.
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Soewandi, Bayu Dewantoro P., T. Kostaman, S. Sopiyana, and T. Haryati. "Pengaruh Kawin Sodor (Force Mating) Terhadap Persentase Kebuntingan Kelinci New Zealand White." Jurnal Riset Agribisnis dan Peternakan 5, no. 1 (June 30, 2020): 1–5. http://dx.doi.org/10.37729/jrap.v5i1.28.
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Rabbits have the potential to produce meat for the animal protein consumption. At present, rabbit farming has developed in Indonesia.The development of rabbit farming is also Rabbits have the potential to produce meat for the animal protein consumption. At present, rabbit farming has developed in Indonesia.The development of rabbit farming is also accompanied by problems in the rabbit productivity. The problem that occurs in rabbit breeders is the low productivity of rabbits. The aim of this research was to identify the effect of force mating to the percentage of pregnancy in New Zealand White (NZW) rabbits at Indonesia Research Institute of Animal Production (IRIAP). The material used in this research were 99 heads New Zealand White (NZW) rabbits in the rabbit station at the IRIAP. The treatment in this study is that the dam of NZW is mated in natural mating and force mating. Pregnancy percentage data were analyzed using T test. The results showed that the percentage of pregnancy between natural and force mating was significantly different (P <.05). The percentage of pregnancy with natural mating in rabbits is higher when compared to force mating, but force mating can to increase the high percentage of pregnancy. The conclusion of the study is that the pregnancy percentage for force mating is lower when compared to natural mating. However, force mating can increase the percentage of pregnancy to reach 74%. by problems in the rabbit productivity. The problem that occurs in rabbit breeders is the low productivity of rabbits. The aim of this research was to identify the effect of force mating to the percentage of pregnancy in New Zealand White (NZW) rabbits at Indonesia Research Institute of Animal Production (IRIAP). The material used in this research were 99 heads New Zealand White (NZW) rabbits in the rabbit station at the IRIAP. The treatment in this study is that the dam of NZW is mated in natural mating and force mating. Pregnancy percentage data were analyzed using T test. The results showed that the percentage of pregnancy between natural and force mating was significantly different (P <.05). The percentage of pregnancy with natural mating in rabbits is higher when compared to force mating, but force mating can to increase the high percentage of pregnancy. The conclusion of the study is that the pregnancy percentage for force mating is lower when compared to natural mating. However, force mating can increase the percentage of pregnancy to reach 74%.
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DELIBES-MATEOS, MIGUEL, MIGUEL ÁNGEL FARFÁN, JESÚS OLIVERO, and JUAN MARIO VARGAS. "Land-use changes as a critical factor for long-term wild rabbit conservation in the Iberian Peninsula." Environmental Conservation 37, no. 2 (June 2010): 169–76. http://dx.doi.org/10.1017/s0376892910000214.
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SUMMARYEuropean rabbits (Oryctolagus cuniculus), a multifunctional keystone species in the Iberian Peninsula, have drastically declined over past decades. Rabbit decline has been frequently attributed to the arrival of two viral diseases. However, decline was apparently ongoing before the arrival of the diseases, as a consequence of habitat loss and fragmentation. In this paper, the effect on rabbit populations of land-use changes during recent decades in Andalusia (southern Spain) is analysed. Areas favourable for rabbits both at present and during the 1960s are identified, and the environmental and land-use factors that determine these areas established. In areas where the favourability for rabbits has changed during recent decades, main land use changes are assessed to identify possible factors explaining rabbit favourability in these areas. Areas favourable to rabbits are currently determined by factors similar to those during the 1960s; these areas have undergone geographic changes in recent decades, apparently as a consequence of land-use changes in Andalusia. The percentages of the variables that were positively associated with rabbit favourability in both models (current and 1960s) have declined in Andalusia as a whole, and in areas where rabbit favourability has decreased; hence environments suitable for rabbits have become impoverished. Conversely, in both models, environments suitable for rabbits increased in municipalities, where rabbit favourability also increased. The preservation of rabbit-friendly habitats should be a priority for the conservation of this key species in the western Mediterranean.
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Hollwarth, Ashton, and Stacey Vickery. "Nurse-led rabbit clinics." Veterinary Nurse 13, no. 4 (May 2, 2022): 162–67. http://dx.doi.org/10.12968/vetn.2022.13.4.162.
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Nursing clinics are an excellent time to provide information to prospective and current owners about their pets. Rabbits are an often-overlooked pet and encouraging rabbit owners to attend nurse-led rabbit clinics can help to correct any underlying husbandry issues to prevent disease. Subtle signs of ill health can also be identified during nursing clinics, resulting in reduced morbidity. Of particular note, geriatric rabbit clinics should be performed frequently, as geriatric rabbits are more prone to developing disease compared with their younger counterparts.
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Ushie, F. T., S. E. Alu, and R. A. Oluwafemi. "Effect of quantum blue® supplementation of sugarcane peel meal-based diets on growth rate and nutrient digestibility by weaner rabbits." Nigerian Journal of Animal Production 47, no. 3 (December 17, 2020): 140–48. http://dx.doi.org/10.51791/njap.v47i3.148.
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Sugarcane peels (SCP) is available in large quantities all year round especially in sugar industries where they are discarded as waste product. It contains high amount of carbohydrate and minerals which could be fed to animals especially when properly processed and supplemented with exogenous enzyme to aid the animal digest it. Fifty - four weaned 4-5 weeks old crosses of New Zealand white x Chinchilla male rabbits were utilized to evaluate the effect of feeding sugarcane peel meal-based diets supplemented with quantum blue® on the growth performance parameters (initial weight, final weight, weight gain, feed intake, FCR and feed cost per weight gain) and nutrient digestibility by weaner rabbits. Six diets were formulated to be iso-nitrogenous (18% crude protein) and isocaloric (2700kcal/kg, ME) with two levels of inclusion of sugarcane peel meal (SCPM) (low and high) and three levels of enzyme supplementation (0, 150 and 250 PPM) giving a 2x3 factorial arrangement fitted into Completely Randomized Design. The rabbits were weighed and allotted to the treatments at the rate of 3 rabbits per replicate and each treatment was replicated 3 times. Feeds were weighed and served to the animals individually and water was provided ad-libitum. Growth parameters and nutrient digestibility data were generated and evaluated. The results of the effect of enzyme on growth performance of weaner rabbits showed that average total weight gain significantly (P<0.05) improved as rabbits fed the 200PPM enzyme supplemented diets had the best value of 511.67g/rabbit. However, rabbits fed the 100PPM performed (410.83g/rabbit) the same as those fed the 200PPM. Similarly, rabbits fed the 200PPM enzyme supplemented diets gained more (P<0.05) daily weight of 10.40 g/rabbit/day followed by those fed the 100PPM (8.32 g/rabbit/day). The result of the effect of high SCPM showed that feed intake significantly (P<0.05) increased from 47.37 g/rabbit/day to 59.82 g/rabbit/day as the level of SCPM increased in the diets; rabbits fed the high SCPM had higher total weight gain of 484.44 g/rabbit as compared to those of low SCPM (362.78 g/rabbit). The interactive effects of SCPM and enzyme on growth performance of weaner rabbits showed that final live weight, feed intake and total weight gain were significantly (P<0.05) improved as the levels of SCPM and enzyme increased in the diets. In view of the findings, rabbit farmers can supplement 32% of SCPM in the diets of weaner rabbit with 200PPM of quantum blue® without negatively affecting the growth rate and suppressing the digestibility of nutrients by weaner rabbits.
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Ramsey, David S., Kandarp K. Patel, Susan Campbell, Robyn N. Hall, Patrick L. Taggart, and Tanja Strive. "Sustained Impact of RHDV2 on Wild Rabbit Populations across Australia Eight Years after Its Initial Detection." Viruses 15, no. 5 (May 12, 2023): 1159. http://dx.doi.org/10.3390/v15051159.
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Following the arrival of rabbit haemorrhagic disease virus 2 (RHDV2) in Australia, average rabbit population abundances were reduced by 60% between 2014 and 2018 based on monitoring data acquired from 18 sites across Australia. During this period, as the seropositivity to RHDV2 increased, concurrent decreases were observed in the seroprevalence of both the previously circulating RHDV1 and RCVA, a benign endemic rabbit calicivirus. However, the detection of substantial RHDV1 seropositivity in juvenile rabbits suggested that infections were continuing to occur, ruling out the rapid extinction of this variant. Here we investigate whether the co-circulation of two pathogenic RHDV variants was sustained after 2018 and whether the initially observed impact on rabbit abundance was still maintained. We monitored rabbit abundance and seropositivity to RHDV2, RHDV1 and RCVA at six of the initial eighteen sites until the summer of 2022. We observed sustained suppression of rabbit abundance at five of the six sites, with the average population reduction across all six sites being 64%. Across all sites, average RHDV2 seroprevalence remained high, reaching 60–70% in adult rabbits and 30–40% in juvenile rabbits. In contrast, average RHDV1 seroprevalence declined to <3% in adult rabbits and 5–6% in juvenile rabbits. Although seropositivity continued to be detected in a low number of juvenile rabbits, it is unlikely that RHDV1 strains now play a major role in the regulation of rabbit abundance. In contrast, RCVA seropositivity appears to be reaching an equilibrium with that of RHDV2, with RCVA seroprevalence in the preceding quarter having a strong negative effect on RHDV2 seroprevalence and vice versa, suggesting ongoing co-circulation of these variants. These findings highlight the complex interactions between different calicivirus variants in free-living rabbit populations and demonstrate the changes in interactions over the course of the RHDV2 epizootic as it has moved towards endemicity. While it is encouraging from an Australian perspective to see sustained suppression of rabbit populations in the eight years following the arrival of RHDV2, it is likely that rabbit populations will eventually recover, as has been observed with previous rabbit pathogens.
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Story, G., D. Berman, R. Palmer, and J. Scanlan. "The impact of rabbit haemorrhagic disease on wild rabbit (Oryctolagus cuniculus) populations in Queensland." Wildlife Research 31, no. 2 (2004): 183. http://dx.doi.org/10.1071/wr00099.
Full textAbstract:
Rabbit haemorrhagic disease virus (RHDV) escaped from quarantine facilities on Wardang Island in September 1995 and spread through South Australia to Queensland by December 1995. To determine the impact of this biological control agent on wild rabbit populations in Queensland, shot sample and spotlight count data were collected at six sites. RHDV spread across Queensland from the south-west to the east at a rate of at least 91 km month–1 between October 1995 and October 1996. The initial impact on rabbit density appeared highly variable, with an increase of 81% (255 ± 79 (s.e.) to 385 ± 73 rabbits km–2) at one site and a decrease of 83% (129 ± 27 to 22 ± 18 rabbits km–2) at another during the first outbreak. However, after 30 months of RHDV activity, counts were at least 90% below counts conducted before RHDV arrived. Using a population model to account for environmental conditions, the mean suppression of rabbit density caused by rabbit haemorrhagic disease (RHD) was estimated to be 74% (ranging from 43% to 94% between sites). No outbreaks were observed when the density of susceptible rabbits was lower than 12 km–2. Where rabbit density remains low for long periods RHDV may not persist. This is perhaps most likely to occur in the isolated populations towards the northern edge of the range of rabbits in Australia. RHDV may have to be reintroduced into these populations. Further south in areas more suitable for rabbits, RHDV is more likely to persist, resulting in a high density of immune rabbits. In such areas conventional control techniques may be more important to enhance the influence of RHD.
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Reddiex, Ben, Graham J. Hickling, Grant L. Norbury, and Chris M. Frampton. "Effects of predation and rabbit haemorrhagic disease on population dynamics of rabbits (Oryctolagus cuniculus) in North Canterbury, New Zealand." Wildlife Research 29, no. 6 (2002): 627. http://dx.doi.org/10.1071/wr00088.
Full textAbstract:
The impact of predation and rabbit haemorrhagic disease (RHD) on population dynamics of rabbits, and the survival of juvenile rabbits, was investigated between July 1999 and March 2000 in North Canterbury, New Zealand. Rabbit abundance and pre- and post-emergent rabbit mortality were monitored on four sites, two of which were subject to predator control. RHD spread naturally through all sites from late November to early December. Rabbit densities declined on all sites, but after the RHD epidemic, declines were significantly greater where populations of predators had not been controlled. Survival of rabbit nestlings was lower where predators were not controlled. All post-emergent radio-collared rabbits died at sites where predators were not controlled, whereas 18% of those collared at sites where predators were controlled survived to maturity. In contrast to the results from previous studies, rabbits born at the start of the breeding season had very high rates of post-emergent mortality, as they appeared to be susceptible to the RHD virus later in the breeding season. The age at which juvenile rabbits become susceptible to RHD, the timing of RHD epidemics, and the abundance of predators are likely to be important in determining survival of juvenile rabbits. This study demonstrates that predation can reduce rabbit populations to low levels, but only in combination with other factors, in this case RHD.
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Strive, Tanja, and Tarnya E. Cox. "Lethal biological control of rabbits – the most powerful tools for landscape-scale mitigation of rabbit impacts in Australia." Australian Zoologist 40, no. 1 (January 1, 2019): 118–28. http://dx.doi.org/10.7882/az.2019.016.
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ABSTRACT The viral biocontrol agents Myxoma virus (MYXV) and Rabbit Haemorrhagic Disease Virus (RHDV1), released in 1950 and 1996 respectively, are the only control tools to have resulted in significant and lasting landscape-scale suppression of rabbit populations in Australia. Multiple conservation benefits and significant economic savings have resulted from the long-term and widespread reductions in rabbit numbers and impacts. In an effort to ‘boost’ rabbit biocontrol, an additional variant of RHDV1 ('K5') was recently released nationwide to counteract the decreasing effectiveness of both RHDV1 and MYXV that results from the evolutionary ‘arms race’ between viruses and their hosts. Two years prior to the K5 release, an exotic RHDV strain (RHDV2) appeared in Australia. The commercially available vaccine used to protect pet and farmed rabbits against the officially released K5 was ineffective against the exotic RHDV2, resulting in numerous deaths of domestic rabbits. This created substantial confusion about which strain was released as a biocontrol tool, as well as renewed concerns amongst pet rabbit owners and rabbit farmers about the use of viruses as lethal rabbit control tools in general. Ongoing effective control of wild rabbits in Australia is absolutely essential to protect the substantial conservation gains made by the long-term suppression of rabbit numbers over the past decades, and there is currently no alternative population control tool to achieve this at the required landscape scale. Vaccine formulations need updating to protect non-target farmed and pet rabbits from circulating field variants, including RHDV2, and to increase public acceptance for the ongoing use of viral biocontrol for feral rabbit populations.
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Ramadiani, Dyna Marissa, Muhammad Labib Jundillah, Azainil, and Heliza Rahmania Hatta. "Simple Additive Weighting to Diagnose Rabbit Disease." E3S Web of Conferences 31 (2018): 10002. http://dx.doi.org/10.1051/e3sconf/20183110002.
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Rabbit is one of the many pets maintained by the general public in Indonesia. Like other pet, rabbits are also susceptible to various diseases. Society in general does not understand correctly the type of rabbit disease and the way of treatment. To help care for sick rabbits it is necessary a decision support system recommendation diagnosis of rabbit disease. The purpose of this research is to make the application of rabbit disease diagnosis system so that can help user in taking care of rabbit. This application diagnoses the disease by tracing the symptoms and calculating the recommendation of the disease using Simple Additive Weighting method. This research produces a web-based decision support system that is used to help rabbit breeders and the general public.
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Berman, D., M. Brennan, and P. Elsworth. "How can warren destruction by ripping control European wild rabbits (Oryctolagus cuniculus) on large properties in the Australian arid zone?" Wildlife Research 38, no. 1 (2011): 77. http://dx.doi.org/10.1071/wr09178.
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Context For over 100 years, control efforts have been unable to stop rabbits causing damage to cattle production and native plants and animals on large properties in arid parts of Australia. Warren destruction by ripping has shown promise, but doubts about long-term success and the perceived expense of treating vast areas have led to this technique not being commonly used. Aims This study measured the long-term reduction in rabbit activity and calculated the potential cost saving associated with treating just the areas where rabbits are believed to survive drought. We also considered whether ripping should be used in a full-scale rabbit control program on a property where rabbits have been exceptionally resilient to the influence of biological and other control measures. Methods Rabbits were counted along spotlight transects before warrens were ripped and during the two years after ripping, in treated and untreated plots. Rabbit activity was recorded to determine the immediate and long-term impact of ripping, up to seven years after treatment. The costs of ripping warrens within different distances from drought refuge areas were calculated. Key results Destroying rabbit warrens by ripping caused an immediate reduction in rabbit activity and there were still 98% fewer rabbits counted by spotlight in ripped plots five months after ripping. Seven years after ripping no active warrens were found in ripped plots, whereas 57% of warrens in unripped plots showed signs of rabbit activity. The cost of ripping only the areas where rabbits were likely to seek refuge from drought was calculated to be less than 4% of the cost of ripping all warrens on the property. Conclusions Destroying rabbit warrens by ripping is a very effective way of reducing rabbit numbers on large properties in arid Australia. Ripping should commence in areas used by rabbits to survive drought. It is possible that no further ripping will be required. Implications Strategic destruction of warrens in drought refuge areas could provide an alternative to biological control for managing rabbits on large properties in the Australian arid zone.
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Kobir, Md Alamgir, Latifa Akther, Imam Hasan, Md Ahosanul Haque Shahid, Ziaul Haque, and Mohammad Rabiul Karim. "Effects of Imidacloprid-Contaminated Feed Exposure on Hematological Parameters in Adult Rabbits (Oryctolagus Cuniculus)." Research in Agriculture Livestock and Fisheries 7, no. 3 (December 31, 2020): 439–44. http://dx.doi.org/10.3329/ralf.v7i3.51363.
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Blood parameters are an important index to assess the body homeostasis in mammals. Here, the effect of pesticide (imidacloprid) contaminated feed exposure on the haematological parameters of adult rabbits (n=15) was studied. Pesticides (Imidacloprid, Bildor® 0.5ml (100mg)/L water spray on vegetables and green grass) exposed feed fed to rabbits with wash (washed feed rabbit) or without a wash (not washed feed rabbit) in the once-daily morning for every alternative day up to 15 days. Control rabbits have received a standard diet (fresh vegetables and green grass). The blood cell analysis showed that the total erythrocyte count, packed cell volume, and haemoglobin values were not changed significantly in pesticide exposed rabbit. For differential leukocyte count, the percentage of neutrophil and eosinophil was significantly decreased in the pesticide-exposed rabbit as compared to the control rabbit. The lymphocyte percentage was increased significantly in pesticide-exposed rabbits compared to control rabbits. Interestingly, the number of lymphocytes was significantly increased in not washed feed rabbits compared to wash feed rabbits. The results of the present study suggest that residue of agriculturally used pesticides may affect the body homeostasis of animals.
Res. Agric., Livest. Fish.7(3): 439-444, December 2020
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Daniels, M. J., M. R. Hutchings, D. Henderson, A. Greig, K. Stevenson, and J. M. Sharp. "Do rabbits pose a risk of Johne’s disease to grazing cattle?" Proceedings of the British Society of Animal Science 2001 (2001): 12. http://dx.doi.org/10.1017/s175275620000394x.
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Paratuberculosis (Johne’s disease) is a chronic invariably fatal enteritis of cattle caused by the bacterium Mycobacterium avium subspecies paratuberculosis and has recently been isolated from wild rabbits. One potential route of transmission of M.a.paratuberculosis from rabbits to cattle is the ingestion of rabbit excreta contaminating pasture. Here we (1) determine the prevalence and level of infection in rabbits and their excreta (2) quantify the level of rabbit faeces contaminating cattle pastures and (3) determine the impact of rabbit faeces on cattle grazing behaviour.
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Harvey, Naomi D., James A. Oxley, Giuliana Miguel-Pacheco, Emma M. Gosling, and Mark Farnworth. "What Makes a Rabbit Cute? Preference for Rabbit Faces Differs according to Skull Morphology and Demographic Factors." Animals 9, no. 10 (September 26, 2019): 728. http://dx.doi.org/10.3390/ani9100728.
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Domesticated rabbits typically exhibit shorter, flatter skulls than their wild counterparts (brachycephalism). However, brachycephaly is associated with considerable health problems, including problems with dentition. The aim of this study was to establish which type of rabbit face people prefer, with a particular emphasis on skull morphology and brachycephaly. We grouped 25 images of rabbit faces by cephalic degree based on ratings assigned by 134 veterinary professionals. An online questionnaire was then launched, in which people could rate each of the 25 images according to preference for the rabbits’ faces, and a total of 20,858 questionnaires were completed globally. Repeated-measure, multi-level general linear modelling revealed mildly-brachycephalic rabbits to be the most preferred type of rabbit, and moderately-dolichocephalic (longer skulled) rabbits to be the least preferred. The preference for brachycephalic rabbits was stable across continents, and as such it is highly plausible that human preference has been a driver for the shortening of the skull typically seen in domestic rabbits, perhaps as a result of the ‘baby-schema’. Additional features of rabbit faces that were preferred include a soft, medium-light fur appearance and being generally short-furred. These novel insights may prove useful in the improvement of the public understanding of rabbit health and welfare. The relationship between preference and skull shape is particularly pertinent to future work concerning rabbit health, given the cross-species evidence that having a flat face is associated with chronic health conditions.
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Yuldasheva, Shohista Qobiljonovna, and Okhistaxon Khabibjonova. "Bioecological Properties And Significance Of Some Rabbit Breeds." American Journal of Applied sciences 3, no. 05 (May 7, 2021): 12–16. http://dx.doi.org/10.37547/tajas/volume03issue05-02.
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In Uzbek farms, rabbits are mainly fed meat and fur. Rabbit fur occupies a significant place among the various furs grown in all regions of the country. Because rabbit fur is light, beautiful and inexpensive, it is used to make children's coats, headphones, collars and shoes. Therefore, it is very important in the national economy. Rabbits also play an important role in meat production. Rabbits multiply and mature quickly. Therefore, it is possible to grow a lot of dietary, high-quality rabbit meat in a short time. Rabbit meat is high in protein and low in cholesterol, so it is very useful for children, pregnant women, as well as people with gastrointestinal diseases.
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Li, Zhaoming, Kaimin Song, Yongzhen Du, Zhuanglong Zhang, Rupeng Fan, Pimiao Zheng, and Jianzhu Liu. "Diagnosis of a Rabbit Hemorrhagic Disease Virus 2 (RHDV2) and the Humoral Immune Protection Effect of VP60 Vaccine." Current Issues in Molecular Biology 45, no. 8 (August 8, 2023): 6605–17. http://dx.doi.org/10.3390/cimb45080417.
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Rabbit hemorrhagic disease (RHD) is known as rabbit plague and hemorrhagic pneumonia. It is an acute, septic, and highly fatal infectious disease caused by the Lagovirus rabbit hemorrhagic disease virus (RHDV) in the family Caliciviridae that infects wild and domestic rabbits and hares (lagomorphs). At present, RHDV2 has caused huge economic losses to the commercial rabbit trade and led to a decline in the number of wild lagomorphs worldwide. We performed a necropsy and pathological observations on five dead rabbits on a rabbit farm in Tai’an, China. The results were highly similar to the clinical and pathological changes of typical RHD. RHDV2 strain was isolated and identified by RT-PCR, and partial gene sequencing and genetic evolution analysis were carried out. There were significant differences in genetic characteristics and antigenicity between RHDV2 and classical RHDV strain, and the vaccine prepared with the RHDV strain cannot effectively prevent rabbit infection with RHDV2. Therefore, we evaluated the protective efficacy of a novel rabbit hemorrhagic virus baculovirus vector inactivated vaccine (VP60) in clinical application by animal regression experiment. The result showed that VP60 could effectively induce humoral immunity in rabbits. The vaccine itself had no significant effect on the health status of rabbits. This study suggested that the clinical application of VP60 may provide new ideas for preventing the spread of RHD2.
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Komatsu, M., E. Lamoyi, and R. G. Mage. "Genomic DNA encoding rabbit T cell receptor beta-chains: isotypes and allotypes of C beta." Journal of Immunology 138, no. 5 (March 1, 1987): 1621–26. http://dx.doi.org/10.4049/jimmunol.138.5.1621.
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Abstract We have discovered sequence differences in DNA encoding the first exon of rabbit T cell receptor beta-chains from unrelated rabbits that probably reflect allelic C beta 1 allotypes. Rabbit I was from a colony bred to maintain the K1-expression mutation Basilea, and rabbit II was from a colony bred to maintain the K1b9 allotype. Genomic DNA from rabbits I and II also exhibit restriction fragment length polymorphism of C beta on Southern blots. In addition, several different restriction enzyme digests of DNA from rabbit I give three bands, whereas DNA from rabbit II gives two when probed with C beta. An approximately 14-kb cloned genomic DNA fragment from rabbit I has two copies of C beta exon 1 and a 6-kb fragment has a third copy, suggesting that rabbit I has three different C beta genes. The DNA sequence of a germ-line genomic DNA fragment encoding the first exon of the beta-chain constant region from rabbit I also has an open reading frame encoding 140 amino acids immediately 5' of the C beta sequence. A corresponding sequence had previously been found in a cDNA clone from the second rabbit (rabbit II).
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Hermanto, Dedi, and Dodon Yendri. "RANCANG BANGUN SISTEM PEMBERSIH KOTORAN OTOMATIS PADA KANDANG KELINCI BERBASIS IOT (INTERNET OF THINGS)." CHIPSET 3, no. 02 (October 30, 2022): 146–54. http://dx.doi.org/10.25077/chipset.3.02.146-154.2022.
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Rabbits have their charm for breeding because of the benefits they get from rabbits. However, rabbit farming has a fairly high challenge, namely rabbits die easily because of the cleanliness of the cage. The accumulation of rabbit droppings results in increased levels of ammonia gas which are harmful to rabbits, breeders, and even the environment. In cleaning the cage, rabbit breeders still use manual methods that are ineffective and inefficient. For this reason, a systemwas created to create an automatic feces cleaning system in the rabbit cage based on IoT (Internet of Things) by utilizing loadcell sensors to detect the weight of rabbit droppings that are accommodated on the conveyor belt. Belt conveyor as a medium that transports rabbit droppings. The MQ-135 sensor is used to detect the concentration of ammonia gas and the MCUESP8266 Node as a controller and IoT as a notification and as a system control via a smartphone. Based on testing of the system, the loadcell sensor as a measure of the weight of rabbit droppings has an accuracy rate of 97.43%. The MQ-135 sensor as a measure of theconcentration of ammonia gas in rabbit cages has an accuracy rate of 99.19%. The conveyor belt can move to dispose of rabbit droppings when the weight is > 1000 grams or the ammonia gas content is > 25 ppm. Then the Telegram application bot can 100% control the system by inputting commands and can receive notifications from the system. From testing the system as a whole, the system can work according to the desired function with a 100% success rate.
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Bruce, John S., and Laurie E. Twigg. "The reintroduction, and subsequent impact, of rabbit haemorrhagic disease virus in a population of wild rabbits in south-western Australia." Wildlife Research 32, no. 2 (2005): 139. http://dx.doi.org/10.1071/wr04025.
Full textAbstract:
The natural arrival of rabbit haemorrhagic disease virus (RHDV) in south-western Australia in September 1996 resulted in a reduction in rabbit numbers of ~65% (~90% morbidity, with ~72% mortality of infected rabbits). As no signs of the disease (clinical or serological) were seen over the next two years, and as rabbit numbers over the last 12-month monitoring period at the site were similar to those observed before the natural 1996 RHDV epizootic (i.e. pre-RHD), RHDV was deliberately reintroduced into this rabbit population in April 1999 (autumn). Seven RHDV-inoculated rabbits were released prior to the main breeding season when <3% of sampled rabbits (n = 118) were seropositive for RHDV antibodies. Following the deliberate release, the overall decline in rabbit numbers (68%) was comparable to that seen during the natural 1996 epizootic. However, on the basis of the observed changes in rabbit numbers, and in their serology, the impact of the deliberate RHDV release appeared to be more variable across the six trapping areas than was seen during the natural 1996 spring epizootic. The reductions in rabbit numbers on these areas 6–8 weeks after RHDV-release ranged from 55% to 90%. The serology of the surviving rabbits on the trapping areas was also variable over this period, with the proportion of seropositive rabbits ranging from 5% to 90%. Overall, only 15% of the surviving rabbit population showed evidence of recent challenge by RHDV, giving a morbidity rate of 73% 8 weeks after the release. However, over 90% of infected rabbits died. This provides further evidence that some rabbits remained un-challenged by RHDV for up to 8 weeks after its release. The variable impact of the April 1999 release may have been partially caused by the observed differences in abundance of insect vectors, and/or an apparent increase in the incidence of non-virulent RHDV in the months preceding the release.
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Paul, Gabriele, and Daniel Friend. "Mucoid enteropathy/epizootic rabbit enteropathy in two species of cottontail rabbits: four recent cases." Wildlife Rehabilitation Bulletin 41, no. 1 (August 31, 2023): 9–12. http://dx.doi.org/10.53607/wrb.v41.260.
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Mucoid enteropathy/epizootic rabbit enteropathy is a disease of domestic European rabbits (Oryctolagus cuniculus) that has been recognized for nearly 50 years but is still not well understood. Morbidity and mortality are high and can lead to large losses in domestic rabbit production facilities. Recently, the Colorado Wild Rabbit Foundation identified four cases with similar presentations in two species of cottontail rabbits (Sylvilagus spp.) undergoing rehabilitation (2020–2022). Clinical signs, gross pathology, and histopathology findings were consistent with what has been described in domestic rabbits.
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Smertina, Elena, Luca M. Keller, Nina Huang, Gabriela Flores-Benner, Jennifer Paola Correa-Cuadros, Melanie Duclos, Fabian M. Jaksic, et al. "First Detection of Benign Rabbit Caliciviruses in Chile." Viruses 16, no. 3 (March 12, 2024): 439. http://dx.doi.org/10.3390/v16030439.
Full textAbstract:
Pathogenic lagoviruses (Rabbit hemorrhagic disease virus, RHDV) are widely spread across the world and are used in Australia and New Zealand to control populations of feral European rabbits. The spread of the non-pathogenic lagoviruses, e.g., rabbit calicivirus (RCV), is less well studied as the infection results in no clinical signs. Nonetheless, RCV has important implications for the spread of RHDV and rabbit biocontrol as it can provide varying levels of cross-protection against fatal infection with pathogenic lagoviruses. In Chile, where European rabbits are also an introduced species, myxoma virus was used for localised biocontrol of rabbits in the 1950s. To date, there have been no studies investigating the presence of lagoviruses in the Chilean feral rabbit population. In this study, liver and duodenum rabbit samples from central Chile were tested for the presence of lagoviruses and positive samples were subject to whole RNA sequencing and subsequent data analysis. Phylogenetic analysis revealed a novel RCV variant in duodenal samples that likely originated from European RCVs. Sequencing analysis also detected the presence of a rabbit astrovirus in one of the lagovirus-positive samples.
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Zheng, Tao, Anna M. Napier, John P. Parkes, Joseph S. O'Keefe, and Paul H. Atkinson. "Detection of RNA of rabbit haemorrhagic disease virus from New Zealand wild rabbits." Wildlife Research 29, no. 6 (2002): 683. http://dx.doi.org/10.1071/wr01071.
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Rabbit numbers have returned to high levels in some areas of New Zealand following the initial spread of rabbit haemorrhagic disease virus (RHDV). We undertook to determine whether possible infection with an RHDV-related virus was interfering with the initiation of new outbreaks of rabbit haemorrhagic disease (RHD). RHDV RNA was detected by polymerase chain reaction with reverse transcription (RT-PCR) using RHDV-specific primers from tissue samples of wild rabbits that had been shot in the field. RHDV RNA was detected in 11 of 19 rabbits from an area of Otago where the rabbit population had greatly expanded and in 2 of 8 rabbits from the West Coast where outbreaks of RHD had not been previously reported. Among the 13 rabbits positive for RHDV RNA, 10 had detectable antibodies against RHDV. The nucleotide sequences of the isolates — a segment of the RHDV capsid gene — shared about 99% identity with that of the Czech strain V351 and that of a 1997 New Zealand wild isolate, but shared only about 84% identity with that of a European benign rabbit calicivirus. These results provide evidence for persistent infection of RHDV in rabbits.
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I M., Nuriyasa, and A. W. Puger. "DIGESTIBILITY ON LOCAL FEMALE RABBIT FED DIETS CONTAINING DIFFERENT LEVELS OF FERMENTED TOFU WASTE." Majalah Ilmiah Peternakan 22, no. 2 (June 28, 2019): 80. http://dx.doi.org/10.24843/mip.2019.v22.i02.p07.
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This study aims to determine the digestibility of local female rabbit fed diet containing different levels offermented tofu waste. The study used a randomized block design (RBD), with five treatments and five blocks.The treatment was rabbits fed rations without using tofu waste or control fed (R0), rabbit fed rations containing10% tofu waste (R1), rabbit fed containing 15% tofu waste (R2), rabbit fed rations containing 10% fermented tofuwaste (R3) and rabbit fed rations containing 15% fermented tofu waste (R4). Variables observed were dry matterdigestibility, protein digestibility and efficiency of changes GE to DE. The results showed that rabbits fed ration R3and R4 caused dry matter digestibility, protein digestibility and efficiency of changes GE to DE were higher thantreatments R2, R1 and R0. It can be concluded that diets containing 10% up to 15% fermented tofu waste in rabbitrations can increase the digestibility of rations for local female rabbits.
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Mutze, Greg, Brian Cooke, and Scott Jennings. "Estimating density-dependent impacts of European rabbits on Australian tree and shrub populations." Australian Journal of Botany 64, no. 2 (2016): 142. http://dx.doi.org/10.1071/bt15208.
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Introduced European rabbits, Oryctolagus cuniculus, can severely damage Australian native vegetation but the problem is difficult to quantify because simple methods to estimate rabbit impacts are lacking. Management decision-making is often uncertain because of unknown relationships between rabbit density and damage. We tested simple quantitative sampling methods using belt transects to detect differences in critical characteristics of perennial vegetation communities affected by rabbit browsing: damage to individual juvenile shrubs and trees, and loss of recruitment cohorts. Rabbit density and relative abundance of larger herbivores were estimated from dung pellet density. The prevalence of identifiable rabbit browse on juvenile plants increased with increasing rabbit density and was higher for plant species considered by previous authors to be highly palatable than for moderately palatable or unpalatable species. At densities of ≥0.5 rabbits ha–1, highly palatable plant species were severely damaged as juveniles and cohorts in 0.3–1.0 m height classes and 5–20 mm basal diameter classes were missing. Similar damage became apparent in moderately palatable species at 2 rabbits ha–1 but was rarely seen in unpalatable species. Within species, size cohort evenness was inversely related to the proportion of surviving juveniles with identifiable rabbit damage. The effect of rabbits on native vegetation condition can be recorded in a simple manner suitable for identifying density-damage relationships and changes in vegetation condition over time. It is particularly useful in setting target densities below which rabbits must be managed to maintain natural plant recruitment and ecosystem function in conservation reserves and pastoral grazing properties of southern Australia.
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Story, G., J. Scanlan, R. Palmer, and D. Berman. "Corrigendum to: The impact of rabbit haemorrhagic disease on wild rabbit (Oryctolagus cuniculus) populations in Queensland." Wildlife Research 31, no. 6 (2004): 651. http://dx.doi.org/10.1071/wr00099_co.
Full textAbstract:
Rabbit haemorrhagic disease virus (RHDV) escaped from quarantine facilities on Wardang Island in September 1995 and spread through South Australia to Queensland by December 1995. To determine the impact of this biological control agent on wild rabbit populations in Queensland, shot sample and spotlight count data were collected at six sites. RHDV spread across Queensland from the south-west to the east at a rate of at least 91 km month–1 between October 1995 and October 1996. The initial impact on rabbit density appeared highly variable, with an increase of 81% (255 ± 79 (s.e.) to 385 ± 73 rabbits km–2) at one site and a decrease of 83% (129 ± 27 to 22 ± 18 rabbits km–2) at another during the first outbreak. However, after 30 months of RHDV activity, counts were at least 90% below counts conducted before RHDV arrived. Using a population model to account for environmental conditions, the mean suppression of rabbit density caused by rabbit haemorrhagic disease (RHD) was estimated to be 74% (ranging from 43% to 94% between sites). No outbreaks were observed when the density of susceptible rabbits was lower than 12 km–2. Where rabbit density remains low for long periods RHDV may not persist. This is perhaps most likely to occur in the isolated populations towards the northern edge of the range of rabbits in Australia. RHDV may have to be reintroduced into these populations. Further south in areas more suitable for rabbits, RHDV is more likely to persist, resulting in a high density of immune rabbits. In such areas conventional control techniques may be more important to enhance the influence of RHD.
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Hatoum, Nabil S., Chester L. Leach, Daniel M. Talsma, Robert D. Gibbons, and Paul J. Garvin. "A Statistical Basis for Using Fewer Rabbits in Dermal Irritation Testing." Journal of the American College of Toxicology 9, no. 1 (January 1990): 49–60. http://dx.doi.org/10.3109/10915819009078717.
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An acceptable and validated in vitro method to evaluate the potential of a chemical to cause dermal irritation does not exist; therefore, in vivo studies remain the only alternative. Currently most laboratories utilize 6 rabbits per test, but this group size may not be necessary to derive the desired information. Data generated from 6-rabbit skin irritation tests of 105 materials were used to determine the ability of irritation scores from all possible combinations of 5-, 4-, 3-, or 2-rabbit subsets to predict the Draize score derived from 6 rabbits. There are 630, 1575, 2108, and 1575 possible combinations of 105 studies for the 5-, 4-, 3-, and 2-rabbit subseta, respectively. We classify materials using a four-level adjectival rating system based on (among other factors) the Draize score, Comparisons indicated that the 5-, 4-, 3-, and 2-rabbit scores were in 96, 94, 91, and 88% agreement, respectively, with the classification assigned on the basis of the 6-rabbit score. The correlation coefficients for randomly selected subsets of 5-, 4-, 3-, and 2-rabbit scores versus the 6-rabbit Draize score were 0.996, 0.994, 0.986, and 0.977, respectively. This study indicated that 3 rabbits per test group allow for adequate assessment of the dermal irritation potential of a chemical. These results also conformed closely to those obtainetd from a previous statistical study using eye irritancy data from 155 chemicals, where 3-rabbit subsets were 94% predictive of the 6-rabbit tests.
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LOUKAKI (Κ. ΛΟΥΚΑΚΗ), K., P. KOUKOUTSAKIS (Π. ΚΟΥΚΟΥΤΣΑΚΗΣ), and N. KOSTOMITSOPOULOS (Ν. ΚΩΣΤΟΜΗΤΣΟΠΟΥΛΟΣ). "Animal welfare issues on the use of rabbits in an animal assisted therapy program for children." Journal of the Hellenic Veterinary Medical Society 61, no. 3 (November 17, 2017): 220. http://dx.doi.org/10.12681/jhvms.14889.
Full textAbstract:
Animal Assisted Therapy (AAT) is a method of complementary treatment in the rehabilitation of many human illnesses and conditions. Although the dog is the most widely used therapy animal that is used in AAT program, the rabbit can also be used as an alternate animal species and complementary therapy for many diseases. It is an intelligent, human friendly and playful small animal, easily socialized and transported. Also, the rabbit has very good communication through its body language. A special bond, also, exists between children and rabbits, and in the animal world of children, the rabbit is a very popular animal mainly through children's literature. As a result, rabbits elicit positive feelings in children and enhance their imagination. Based on previousexperience from an AAT program with rabbits in a children's hospital, the rabbit can be easily accepted by children with emotional or physical problems. In order for an AAT program with a rabbit to be a success, it is very important to guarantee good health and normal behaviour of the rabbit, as well as its proper welfare. The contribution and participation of a veterinarian during the design and the implementation of the program are, also, very important for assuring the success of an AAT program with rabbits.
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Twigg, Laurie E., Tim J. Lowe, Garry S. Gray, Gary R. Martin, Amanda G. Wheeler, and William Barker. "Spotlight counts, site fidelity and migration of European rabbits (Oryctolagus cuniculus)." Wildlife Research 25, no. 2 (1998): 113. http://dx.doi.org/10.1071/wr97065.
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Regardless of their sex and age, the persistence of 76 rabbits (Oryctolagus cuniculus) translocated onto 5 different sites with relatively low rabbit densities was identical to that of resident rabbits. Emigration and exploratory movements by rabbits from 12 discrete populations were positively correlated with rabbit density and mainly undertaken by adult rabbits. Adult males moved significantly more often and further than adult females. Two peaks in immigration were observed; a large peak (usually in January) immediately following the breeding season, and a second but smaller peak in March which preceded the start of the next breeding season. Again, significantly more adult males than females immigrated. The proportion of rabbits seen in spotlight counts was positively correlated with rabbit density, which suggests that biases in population estimates could result in some situations. No clear patterns on the effects of a variety of weather variables on spotlight counts could be established, but increasing rainfall, wind speed and moonlight may have reduced rabbit activity.
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Mulyati, Mulyati, and Erniyati Erniyati. "PEMILIHAN BIBIT KELINCI NEW ZEALAND WHITE (NZW) TERBAIK DENGAN MENGGUNAKAN METODE VIKOR." Komputasi: Jurnal Ilmiah Ilmu Komputer dan Matematika 18, no. 1 (January 26, 2021): 48–54. http://dx.doi.org/10.33751/komputasi.v18i1.2411.
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The New Zealand White (NZW) rabbit is a rabbit originating from America that has now spread to Indonesia. NZW rabbits have the advantage that they have large meat weight, small bones and a harvest period of about 3.5 months. However, the quality of the rabbits produced is very influential in the initial selection of seeds. Therefore, a decision support system is needed to select so that the resulting rabbits are as expected. One of the selection methods used in selecting the best rabbit seeds is the Visekriterijumsko Kompromisno Rangiranje (VIKOR) method. VIKOR is a decision-making method that works by looking at the closest solution / alternative as an approach to the ideal solution in ranking. The purpose of this study is to recommend the selection of the best NZW rabbit seeds using the VIKOR method. The results showed that the VIKOR method was able to select the best NZW Rabbit seeds from a number of existing data.
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Magdalena, Hilyah, and Hadi Santoso. "Desain Sistem Berbasis Web Penunjang Pemasaran Limbah Ternak Kelinci (LTK) Sebagai Bahan Baku Pupuk Organik." INFORMAL: Informatics Journal 7, no. 3 (December 21, 2022): 157. http://dx.doi.org/10.19184/isj.v7i3.33576.
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CV. Mitra Ternak Sejahtera packs livestock waste of their broiler rabbits and ornamental rabbits to be sold as raw material for fertilizer. The sale of rabbit manure waste utilizes a network of resellers that already exist related to the marketing of broiler rabbits and ornamental rabbits. Marketing of rabbit livestock waste is done through messaging applications on social media. Conventional marketing and the high demand for rabbit waste products pose a problem considering that the marketing of rabbit waste uses resellers who also market broiler rabbits and ornamental rabbits. Accuracy of order data and guarantee of availability of waste products that are ready to be marketed are a problem. To reduce product order fulfillment errors and make it easier for resellers and general consumers to find out product stock, this study designed a web-based system for marketing kelimci livestock waste. The system design uses the Agile methodology and the Rapid Application Development (RAD) model with the hope that this system can be developed sustainably and adapt to the needs of the system owner
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Shevchik, R. S., Y. V. Duda, O. G. Gavrilina, and L. V. Kuneva. "Comparative assessment of the quality of rabbit meat, which was obtained in the conditions of a slaughter enterprise and backyard." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 22, no. 97 (May 7, 2020): 162–68. http://dx.doi.org/10.32718/nvlvet9726.
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Recently, healthy food products, include rabbit meat, are becoming increasingly popular consumers. Given the large percentage of households producing rabbit meat, as well as the development of relevant enterprises, the issue of quality of rabbit meat obtained under various technological conditions is relevant. The research material was two groups of Californian breed rabbits: the first (I) in the amount of 32 animals from a small rabbit farm city, the second (II) in the amount of 60 animals from a rabbit breeding and processing enterprise in the Dnipro. The experience consisted of determining: technological features of the slaughter and primary processing of rabbits, meat production and quality characteristics of rabbit meat, as well as slaughter veterinary and sanitary examination and histomorphological research. The general patterns of slaughter and primary processing of rabbits of both groups were generally similar and consistent with the requirements. The differences are defined in the methods of stunning, bleeding, toilet carcasses and preparing them for storage. A quick and effective method of bleeding rabbits of group II led to blood contamination of the skins, while in group I the skins remained clean. The dressing out percentage of rabbit backyard slaughter was 6.2 % higher (P < 0.001) than at the enterprise, and, conversely, the loss of carcass meat juice after cooling was 3.24 % less (P < 0.01) in production than in the small farm. The decrease in meat pH at the extreme minimum values per day after slaughter in the 1st group was more intense than in the 2nd group: 5.72 and 5.93 (P <0.001), respectively. The influence of the conditions for the production of rabbit meat on the moisture and protein content in meat was not revealed. The pathological changes common to both groups of rabbits were characterized by the detection of hematomas, subcutaneous abscesses in carcasses (9.4 % and 5.0 % of cases), hepatic coccidiosis (12.5 % and 18.3 %). A significant difference was found in pathological changes in the lungs: the incidence of hemoaspiration of the lungs of rabbit slaughter was 16.5 times higher than that of rabbits slaughtered under production conditions.
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Iwuji, T. C., F. C. Egenuka, D. O. Nwapi, I. P. Ogbuewu, E. O. Kadurumba, F. C. Egenuka, and P. C. Okere. "Management, blood and reproductive parameters of rabbits reared in Imo State." Nigerian Journal of Animal Production 44, no. 2 (December 26, 2020): 248–56. http://dx.doi.org/10.51791/njap.v44i2.1017.
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The management, haematological, serum biochemical and reproductive parameters of rabbits reared in the 3 zones (Okigwe, Orlu and Owerri) of Imo State were investigated. Data for this study were collected through questionnaire, on-the-farm assessment and fluid sample (blood and semen) from the rabbits. The hutch/cage type of housing is the most prevalent in Imo State, constituting 73.58 %. Most rabbit farmers in Imo State (45.28 %) combine concentrate and forage in rabbit feeding, 47.17 % of the rabbit house/environment were fairly clean, 30.19 % dirty and 22.64 % were clean. Rabbits with ages ranging from 5 – 8 months recorded average live weight of 1.91 kg, while annual average kindling and litter size of rabbit does reared in Imo State were 5.67 and 7.43, respectively; with average litter survival rate of 60.16 % between parturition and weaning. Haematological analysis of the adult rabbits recorded 27.80 %, 9.56 g/dl and 3.40 x 106/ml in packed cell volume, haemoglobin concentration and red blood cell count, respectively, which were lower than normal reference values. Total serum protein, globulin and urea values were lower than normal reference values recording 4.44 g/dl, 1.57 g/dl and 16.56 mg/dl, respectively. Semen parameters obtained from adult rabbit bucks were inferior to semen parameters of adult rabbit bucks reared in similar geographical locations and environment, but under standard management practices. This study was therefore designed to assess the level of management, blood and reproductive parameters of rabbits in Imo State.
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Shaw, Danielle, Jessica Parkes, and Helen Reynolds. "Assessing pain in rabbits: how well does the Rabbit Grimace Scale work in the veterinary practice?" Veterinary Nurse 11, no. 6 (July 2, 2020): 282–87. http://dx.doi.org/10.12968/vetn.2020.11.6.282.
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Background: Pain recognition in rabbits (Oryctolagous cuniculi) can be a challenging task for the registered veterinary nurse (RVN) and can often result in the delivery of suboptimal nursing care if pain goes undetected. Although the Rabbit Grimace Scale (RbtGS) can assist in pain assessment, it is a tool that is currently underutilised in practice. Aims: The aim of this research was to evaluate the efficacy of the RbtGS to assess if it is useful in the veterinary practice to improve rabbit welfare standards. Methods: 31 individuals, 25 student veterinary nurses and six RVNs participated, taking RbtGS scores for 19 rabbits through either live or video observations. The rabbits were either healthy or experiencing a pre-existing illness or health condition as assessed by a veterinary surgeon. Results: The RbtGS scores indicated that the majority of participants were unable to accurately identify the rabbits most likely to be in pain, suggesting that it may not be an optimal tool in rabbit pain assessment. However, RVNs who had more experience in practice were better at identifying signs of pain and stress in the rabbits. Conclusion: Experience and ongoing education is invaluable to improve rabbit care. There is a need for a veterinary rabbit pain score system in order to standardise pain management across species.
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DANIELS, M. J., D. HENDERSON, A. GREIG, K. STEVENSON, J. M. SHARP, and M. R. HUTCHINGS. "The potential role of wild rabbits Oryctolagus cuniculus in the epidemiology of paratuberculosis in domestic ruminants." Epidemiology and Infection 130, no. 3 (June 2003): 553–59. http://dx.doi.org/10.1017/s0950268803008471.
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Mycobacterium avium subspecies paratuberculosis, the organism responsible for paratuberculosis in cattle and sheep has been found in wild rabbits (Oryctolagus cuniculus) in the east of Scotland. Few studies have investigated either the level of faecal contamination by rabbits on farms, or the potential infectivity of rabbit excreta. The rate of rabbit faecal contamination deposited and the numbers encountered were estimated for 21 fields on 4 farms with a paratuberculosis problem. 7357±2571 S.E.M. rabbit faecal pellets were deposited per hectare per day and up to 81000 pellets/ha (‘standing crop’) were encountered in October/November 1998. Where access to rabbits was restricted, the standing crop of faeces encountered fell to 22000 pellets/ha.The prevalence of infection with M. a. paratuberculosis was assessed for 83 rabbits from the four farms. M. a. paratuberculosis was isolated from rabbits on all farms with an overall prevalence of 17%. Out of 17 rabbits from which urine was available, M. a. paratuberculosis was isolated from two – the first reported isolation from urine in wild rabbits. The mean number of colony-forming units per gram of infected rabbit faeces was 7·6×105±5·2×105.A relative estimate of the input of M. a. paratuberculosis onto pasture, at the stocking levels found on the four farms, showed that sheep and cattle potentially contributed 4 and 125 times more organisms/ha per day respectively than rabbits. However, rabbits could still contribute millions of M. a. paratuberculosis organisms per ha per day. Existing rabbit control measures on farms may be inadequate in reducing the risk of transmission to livestock.
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H. Margatama, H. Nuraini, B. Brahmantiyo, and Supratikno. "Carcass Productivity and Meat Quality Bambu Apus Rabbit." Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan 11, no. 3 (October 29, 2023): 119–25. http://dx.doi.org/10.29244/jipthp.11.3.119-125.
Full textAbstract:
Rabbits are meat-producing livestock with high productivity. Rabbit meat has high nutritional content and is good for health. The DKI Jakarta Government through the Center for Animal Health and Livestock Services (Pusyankeswannak) has opened the Bambu Apus Livestock Park. This research was conducted to determine the productivity of bambu apus rabbit carcasses as broiler rabbits to support urban farming programs in DKI Jakarta. Ten of bambu apus rabbits (five males and five females), ten of new zealand white rabbits (eight males and two females) and 17 rexsi grinak rabbits (eight males and nine females) were used. The body weights of the rabbits ranged from 2000 to 3000 g per head. This research has obtained Ethical Clearance (Balitbangtan/Center for Animal Husbandry Research BRIN/NRm/01/2022). Rabbits were slaughtered according to Islamic Syar’i and the carcass were cutting according to the commercial cut. A completely randomized design with a 3 x 2 factorial pattern (sex and type of rabbit) was used with carcass productivity and meat physical properties as variables. Bambu apus rabbits have good carcass productivity (Carcass Percentage, Meat Bone Ratio), meat on commercial cuts (Loin and Hindleg) and carcass quality (pH, tenderness, Water Holding Capacity and cooking losses) which were the same as new zealand white rabbits and rexsi agrinak rabbits as the broiler rabbit. Bambu apus rabbits have good carcass production and carcass meat quality so they have the potential to be developed into broiler rabbits in support of urban farming programs.
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Ferraz, Patrícia Ferreira Ponciano, Yamid Fabián Hernández-Julio, Gabriel Araújo e. Silva Ferraz, Raquel Silva de Moura, Giuseppe Rossi, Jairo Alexander Osorio Saraz, and Matteo Barbari. "Decision Trees for Predicting the Physiological Responses of Rabbits." Animals 9, no. 11 (November 18, 2019): 994. http://dx.doi.org/10.3390/ani9110994.
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The thermal environment inside a rabbit house affects the physiological responses and consequently the production of the animals. Thus, models are needed to assist rabbit producers in decision-making to maintain the production environment within the zone of thermoneutrality for the animals. The aim of this paper is to develop decision trees to predict the physiological responses of rabbits based on environmental variables. The experiment was performed in a rabbit house with 26 rabbits at eight weeks of age. The experimental database is composed of 546 observed data points. Sixty decision tree models for the prediction of respiratory rate (RR, mov.min−1) and ear temperature (ET, °C) of rabbits exposed to different combinations of dry bulb temperature (tdb, °C) and relative humidity (RH, %) were developed. The ET model exhibited better statistical indices than the RR model. The developed decision trees can be used in practical situations to provide a rapid evaluation of rabbit welfare conditions based on environmental variables and physiological responses. This information can be obtained in real time and may help rabbit breeders in decision-making to provide satisfactory environmental conditions for rabbits.
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Rouco, C., P. Ferreras, F. Castro, and R. Villafuerte. "The effect of exclusion of terrestrial predators on short-term survival of translocated European wild rabbits." Wildlife Research 35, no. 7 (2008): 625. http://dx.doi.org/10.1071/wr07151.
Full textAbstract:
Many translocation methods have been tested in southern Europe in recent decades to increase the translocation success of the European wild rabbit (Oryctolagus cuniculus L.) for both conservation and game purposes. The main problem experienced during such translocations is the high short-term (7 days) mortality attributed to predation during the days immediately following rabbit release. In this study, we test the effect of the exclusion of terrestrial predators on the survival of translocated rabbits for recovery purposes. Four translocation plots (4 ha with 18 artificial warrens each) were constructed, two of them with a fence to exclude terrestrial predators. In all, 724 rabbits were released to the translocation plots in five batches and forced to remain inside warrens for 7 days. Following liberation, exclusion of predators did not increase rabbit survival in the short term. Contrary to expectations, three months after release, survival of rabbits in the unfenced plot was slightly, but not significantly, higher than in the fenced plot (0.57 and 0.40 respectively). Although predator control is a frequent management practice associated with rabbit translocations, our results suggest that it may not favour rabbit survival rate as much as the adaptation of rabbits to the release site.
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White, Piran C. L., Geraldine Newton-Cross, Michael Gray, Roland Ashford, Catherine White, and Glen Saunders. "Spatial interactions and habitat use of rabbits on pasture and implications for the spread of rabbit haemorrhagic disease in New South Wales." Wildlife Research 30, no. 1 (2003): 49. http://dx.doi.org/10.1071/wr01106.
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Successful control of European rabbit (Oryctolagus cuniculus) populations in Australia has been achieved with the use of disease, initially myxomatosis and more recently rabbit haemorrhagic disease (RHD). Predicting the effectiveness of disease as a control agent depends on understanding the spatial and social organisation of its host population. We radio-tracked 37 rabbits from adjacent burrow systems during May and June 1999. Surface-dwelling rabbits had larger home ranges and core areas and a higher proportion of vegetation cover in their ranges than warren-based rabbits. Interactions between rabbit dyads from the same warren showed greater range overlap than those involving rabbits from different warrens and those involving itinerants. Static interaction was high and positive for intra-warren dyads, but low and negative for inter-warren, warren–surface and surface–surface dyads. These patterns of range use and interaction behaviour create a hierarchical contact and transmission structure within the rabbit population that is likely to vary according to external factors such as population density, resource availability, season, climate and the environment. Quantifying these links between the environment and the transmission process is important to increase our understanding of RHD as an effective management tool for rabbit populations.
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Cooke, B. D., J. L. Chapuis, V. Magnet, A. Lucas, and J. Kovaliski. "Potential use of myxoma virus and rabbit haemorrhagic disease virus to control feral rabbits in the Kerguelen Archipelago." Wildlife Research 31, no. 4 (2004): 415. http://dx.doi.org/10.1071/wr03084.
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Rabbits have caused enormous damage to the vegetation on seven islands in the sub-Antarctic Kerguelen archipelago, including the main island, Grande Terre. Rabbit sera collected during 2001–02 were tested for antibodies against myxoma virus and rabbit haemorrhagic disease virus with a view to considering the wider use of these viruses to control rabbits. The results confirmed work done 15–20 years earlier that suggested that myxoma virus has not spread across all parts of Grande Terre and occurs at low prevalence among rabbits. By contrast, on Ile du Cimetière, where European rabbit fleas were introduced in 1987–88, the prevalence of myxoma antibodies is high and the rabbit population is relatively low, supporting the idea that the fleas are effective vectors of myxoma virus. Consequently, there should be benefits in releasing fleas on Grand Terre to enhance disease transmission. Reactivity of some rabbit sera in RHD-specific ELISAs suggested that a virus similar to RHDV may be present at low prevalence on Grande Terre but most rabbits are likely to be susceptible and this virus could be considered for use as a future biological control agent.