Bibliografías temáticas / Rabbits

Literatura académica sobre el tema "Rabbits"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 30 de julio de 2024

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Artículos de revistas sobre el tema "Rabbits"

1

Speight, Claire. "Healthy rabbits and communicating with owners". Veterinary Nurse 11, n.º 5 (2 de junio de 2020): 223–27. http://dx.doi.org/10.12968/vetn.2020.11.5.223.

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Rabbits need species-specific care, in order to meet their health, welfare and behavioural needs. Preventative health care is imperative to help keep rabbits healthy. Advice needs to be given to owners on their rabbit's dietary requirements, and why hay and grass is imperative as the bulk of their diet. Vaccinations to help prevent myxomatosis and rabbit viral haemorrhagic disease (RVHD1 and RVHD2) should be advised for all rabbits, including house rabbits. Rabbits require adequate space and the companionship of another rabbit to live a good quality life. They should have access to an exercise area, and have the choice of where to spend their time, without the need to be picked up and moved from a hutch to a run. Many owners will look to veterinary nurses for current advice, and it is important that nurses feel confident in offering the most up-to-date information. At times, it may be that owners need to make changes to the way they care for their rabbits, and being confident in explaining why these need to be implemented, and the positive effects these will have on the rabbit's life, is vital.
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2

Kotsiubenko, Anna A., Michael I. Gill, Vladimir I. Kotsiubenko y Elena I. Petrova. "Influence of the Housing System on Sperm Productivity and Reproductive Capacity of Rabbits". Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. 76, n.º 2 (1 de abril de 2022): 317–20. http://dx.doi.org/10.2478/prolas-2022-0046.

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Abstract The influence of the housing system on sperm productivity and reproductive capacity of rabbits was studied. Indicators like ejaculate volume, sperm density, activity, and concentration, as well as the percentage of fertility were measured for silver breed rabbits of three coloured lines housed in aggregates “Rabbitax-8” and in a modular rabbit house developed by Mykolayiv National Agrarian University. The highest male sperm productivity and reproductive capacity were found for rabbits housed in aggregates “Rabbitax-8”.
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3

Cooke, Brian D. "Rabbits: manageable environmental pests or participants in new Australian ecosystems?" Wildlife Research 39, n.º 4 (2012): 279. http://dx.doi.org/10.1071/wr11166.

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Some theorists argue that plant and animal species introduced to new localities should be controlled only if they cause damage and not because they originated in another country; this warrants greater acceptance of introduced species as participants in new ecological associations in a rapidly changing world. To evaluate this concept and its relevance in setting directions for rabbit control in Australia, this idea is not only reviewed against information on the rabbit’s impact in Australian ecosystems but also against management policies, industrial drivers and social expectations. It is concluded that wild rabbits hold many natural Australian ecosystems in a degraded state and any beneficial ecological roles rabbits provide are small by comparison. Furthermore, rabbits can be controlled adequately to initiate ecosystem restoration. The idea that introduced rabbits should be more readily accepted as participants in new ecosystems is strongly counter-argued. Rabbits are not harmless passengers in Australian ecosystems and, to achieve ecosystem recovery, a high level of rabbit control is necessary.
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4

Wijaya, Anderias Eko y Nur Imam Iskandar. "IMPLEMENTASI METODE SAW (SIMPLE ADDITIVE WEIGHTING) SEBAGAI PENDUKUNG KEPUTUSAN UNTUK REKOMENDASI HABITAT KELINCI BERBASIS IoT (INTERNET OF THINGS)". Jurnal Teknologi dan Komunikasi STMIK Subang 13, n.º 2 (1 de octubre de 2020): 37–48. http://dx.doi.org/10.47561/a.v13i2.183.

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Rabbits are mammals from the family Leporidae (green plant eaters) which can be found in many parts of the earth. Rabbits are very susceptible to temperature changes. Temperature greatly affects the rabbit's body metabolism. The temperature ideal for rabbits is in the range of 60 – 650F or equal to 15.5 - 18.30C temperature is known as "comfort zone" for rabbits. The level of heat stress in rabbits is very high in the tropics thereby reducing rabbit productivity. With a system that researchers can make it easier to determine the suitable place to serve as a rabbit habitat with the Internet of Things system network, and reduce the failure rate in keeping rabbits as well as the implementation of the node-ed as a platform to display the results of the calculation method of the decision. The system is applied using the SAW (Simple Additive Weight) ranking method or commonly called this weighted method by using three parameters including temperature; humidity; light. However, the data must go through a calculation that generates a value of each location then normalize to get a decision by the sum of the multiplication of normalization with weights. Implementation Methods of SAW (Simple Additive weighting) as Decision Support Habitat For Rabbits Recommendation Based IoT (Internet Of Things) has been successfully applied. So that it can rank rabbit habitat locations based on parameters of temperature, humidity, light. However, although the system is built based on IOT but has not publicly accessible or still based on the localhost.
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5

Mintorini, Ery y Wildan Mahmud. "Rabbit Type Classification Using Multi-SVM Based on Feature Extraction". Journal of Applied Intelligent System 4, n.º 2 (6 de marzo de 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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6

Musco, Lombardi, Addeo, Secci, Parisi, Pero, Piccolo, Nizza y Bovera. "Mirrors Can Affect Growth Rate, Blood Profile, Carcass and Meat Traits and Caecal Microbial Activity of Rabbits Reared in a “Small Group” Free-Range System". Animals 9, n.º 9 (1 de septiembre de 2019): 639. http://dx.doi.org/10.3390/ani9090639.

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The aim of this work was to propose a model of free-range raising for rabbit able to maximize the animal welfare and at the same time the productive performances through the use of mirrors. A total of 81 rabbits were allocated into free-range areas and divided into three groups (nine replicates per group): in the first group (face to face, F2F), the rabbits of each replicate could see each other. In the second group (blind) each replicate was isolated from the others; in the third group (mirrors), the replicates were divided as for the Blind group but two mirrors were placed in a corner of the perimeter. The blind group rabbits showed the lowest final weight (p < 0.05), while rabbits from the mirrors groups showed the best FCR and net dressing out values. The blind group showed the highest production of total short chain fatty acids, acetate (p < 0.05) and propionate (p < 0.01). The F2F rabbits showed higher levels of creatine phosphokinase and lactate dehydrogenase and lower values of blood glucose than those of the other groups, due to the higher locomotion activity. The use of mirrors can improve rabbit’s growth performance and carcass traits by lowering the rabbit’s locomotion activity in comparison to the other tested systems.
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7

Lee, Haiju. "The Context and Implication of the Rabbit Figure Supporting the Celadon Incense Burner with Openwork Auspicious-character Design Lid in the National Museum of Korea: Focusing on the Symbolism of the Rabbit and the Atlas Motif". Paek-San Society 127 (31 de diciembre de 2023): 211–41. http://dx.doi.org/10.52557/tpsh.2023.127.211.

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This study discusses the symbolism of the rabbit statue on the base of a celadon incense burner with an openwork auspicious-character design lid in the National Museum of Korea. Chapter II analyzes the overall design of the incense burner, pointing out that although the rabbit statue is small in size, it is a three-dimensional figure with detailed carving of each part of the body and inlaid techniques used to express the eyes, making it an important component that embodies artistry beyond a simple base. Chapter III explores the spectrum of perceptions of the rabbit by examining rabbit sculptures from before the Goryeo period. As a symbol of fertility and longevity, thought to be a guide to the quick passage of the souls of the dead to the afterlife, rabbits were attached to funerary urns in the Silla period. They were depicted as moon symbols in Goguryeo tomb paintings and Unified Silla roof-end tiles. In Unified Silla, rabbits were also carved into royal tombs as members of the Twelve Great Deities to show the despotic kingship of the kings guarding the tomb, or were majestically displayed in stupas to represent the authority of Bhaisajyaguru. In Chapter IV, the meaning of the three rabbits supporting the incense burner was derived from three aspects. First, the intention of the rabbit's representation on the incense was inferred from the similarities between the rabbit's self-sacrifice and the offering of incense in The Jataka Tales of the Rabbit's Original Life (Sasa Jataka), which is to burn oneself and offer it to the gods. Since the rabbit was Buddha in the previous life, the life in which he practiced the great act of selflessness, it is believed that the rabbit was chosen to stand alone on the base of the incense burner, even though it does not symbolize absolute physical power. Through this carving of the rabbit, it can be seen that the 12th-century Goryeo people understood the offering of incense and the act of self-sacrifice in the same context. Second, the appearance of rabbits in historical texts and geographical journals from the Three Kingdoms and Goryeo periods was examined. In doing so, the chapter describes who recognized rabbits as auspicious animals in addition to being a symbol in Buddhism. Third, it discusses the internationalization of Goryeo culture, which is reflected in the sculpture of the atlas that supports the top. It is interpreted that the incense burner represents the cosmopolitanism of Goryeo culture because the rabbit statue on the incense burner was arranged in a form similar to the atlas statues popular in ancient Greece, Persia, and India and spread along the Silk Road.
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8

Luchyn, I. S., D. P. Perih y 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, n.º 98 (31 de marzo de 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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Quaresma, Mário, Luisa Cristina Roseiro, Tatiana Ferreira, Maria Leonor Nunes y Gonçalo Pereira. "Effect of Diet Supplementation with Oat Hay and Whole Carrot on Rabbit Growth and Productive Efficiency". Animals 13, n.º 19 (8 de octubre de 2023): 3138. http://dx.doi.org/10.3390/ani13193138.

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Is it possible to reduce feeding costs in rabbit meat production without compromising rabbit health and productive yield? The study tested four feeding strategies: Control group (CC) fed exclusively with concentrate feed; group CT supplemented with whole carrot; group OH supplemented with oat hay; and Group CO supplemented with oat hay and whole carrot. Each feeding strategy was tested in 20 rabbits, randomly allocated in five cages with four rabbits each. The average daily weight gain (ADG), feed conversion ratio (FCR), and the amount of concentrated feed consumed daily were estimated in all experimental groups. Group CC displayed the best ADG (37.1 g/rabbit/day), carrot had no significant influence on ADG (34.2 g/rabbit/day), but oat hay had a negative impact (p < 0.05), either used alone or in combination with carrot (33.0 and 32.6 g/rabbit/day, respectively). Supplementation with carrot, oat hay, or both increased the FCR (p < 0.001). Nevertheless, there were no significant differences in final live weight or carcass weight between the rabbits in the different experimental groups. In conclusion, supplementation with oat hay, carrot, or both can be a valid approach to reducing production costs by decreasing concentrate feed without affecting rabbit’s health and meat yield. The combined supplementation with oat hay and carrot proved to be the best option in reducing the amount of concentrate feed ingested by rabbits (less than 1107 g/animal), but at current market values, supplementation exclusively with oat hay was the less expensive feeding strategy (less 14% than fed exclusively with concentrate feeding).
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10

KOSTOMITSOPOULOS (Ν. ΚΩΣΤΟΜΗΤΣΟΠΟΥΛΟΣ), N., M. SERAFETINIDOU (Μ. ΣΕΡΑΦΕΤΙΝΙΔΟΥ), A. KATSAROU (Α. ΚΑΤΣΑΡΟΥ), C. VOYAZAKI (Χ. ΒΟΓΙΑΤΖΑΚΗ) y I. DONTAS (Ι. ΔΟΝΤΑ). "Εvaluation of an environmental enrichment device used for laboratory rabbits". Journal of the Hellenic Veterinary Medical Society 66, n.º 1 (27 de diciembre de 2017): 41. http://dx.doi.org/10.12681/jhvms.15582.

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Improving the housing conditions of individually caged laboratory rabbits using environmental enrichment devices is a source of concern in the scientific community and is encouraged in the guidelines of the local and international laboratory animal associations and national regulations. In this report, we inform on the results of an investigation whose aim was to evaluate the use of a commercially available shelter as an enrichment device for six individually caged rabbits (mean body weight 2.5 Kg) during their resting period. After an acclimatization period of five days in an animal room, a commercially available enrichment device, the Rabbit Hut (BioServ, New Jersey, USA), was introduced into every cage. After a 3-day familiarization period, the interactions of the rabbits with the device were video recorded for 12 hours during the light phase (06:00 – 18:00) on five consecutive days. Each rabbit’s interaction with the device was monitored and analyzed from the video recordings. We found that the rabbits used the enrichment device in different ways, which included passing through the device, staying under the device, gnawing the device, pulling and dragging the device using their teeth, and playing with the device. We also found that the rabbits mainly interacted with the device during the first two hours (06:00 – 08:00) and last four hours (14:00 – 18:00) of each 12-hour observation period of the 5-day investigation. Although the Rabbit Hut is marketed as an environmental enrichment item that could be used as a shelter for individually caged laboratory rabbits, our analysis of the interactions of individually caged laboratory rabbits with the device has generated new questions about the usefulness of the device and its benefit for the rabbits. However, further investigation is needed to clarify whether some of the expressed interactions indicate curiosity, interest or frustration with the item.
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Tesis sobre el tema "Rabbits"

1

Roberts, Susan C. "Sociality in rabbits". Thesis, University of Oxford, 1985. https://ora.ox.ac.uk/objects/uuid:c7345d17-d1f7-40c8-911a-ac4477826d1e.

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Two populations of rabbits (Oryctolaqus cuniculus) were investigated to see whether polygynous, multi-male groups formed in the absence of large multi-entranced warrens. They did not. Rabbits neither gathered in space nor time. The small warrens were spread out evenly across homogeneous patches and the females were well spaced out. Monogamy, distinguished by a battery of tests, was prevalent, with the more dominant males as 'mate' rabbits. That the polygyny frequently mentioned in the literature was a result of male dominance and female defense was considered. The genetic structure of each population was investigated by taking blood from rabbits and having it analysed electrophoretically and for immunoglobulins. A method for assessing relatedness between groups of pairs of animals was implemented, then validated and developed with Monte Carlo simulations. With the seven polymorphic allele obtained, no non-zero relatedness was found but it was sometimes possible to exclude high relatedness. The bearing of sociality on vigilance during feeding was investigated. Although a rabbit's vigilance decreased as its 'mate' approached, the presence of other rabbits was correlated with increased vigilance. It was concluded that the need for social vigilance outweighed the benefit of 'many eyes' watching for predators. This conclusion was tested by experiment, using stuffed animals as stimuli. Rabbits increased their vigilance during grazing bouts both by increasing the length and frequency of scans. Scans could be short or long: the probability of ending a scan decreased sharply at a certain point; a form of positive feedback. The durations of short 'maintenance' scans were dependent on chewlength (the amount of food in the mouth). This fitted a timesharing definition as supported by experiment. Long scans in response to a visible threat did not involve chewing.
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2

Peacey, Matthew y n/a. "Creation and investigation of a versatile Rabbit haemorrhagic disease virus-like particle vaccine". University of Otago. Department of Microbiology & Immunology, 2008. http://adt.otago.ac.nz./public/adt-NZDU20080215.155033.

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There is a need to develop a range different VLP for use as nanoscale templates and vaccines. The aim of this research was to develop RHDV VLP as a versatile vaccine delivery system easily modified for use against a wide range of different diseases. Production of Rabbit haemorrhagic disease virus (RHDV) capsid protein in a baculovirus system led to the self-assembly of Virus-like Particles (VLP) that could be purified to greater than 99% purity using simple methods. The capsid gene, vp60, can be manipulated genetically to incorporate immunogenic peptide sequences or a functional DNA-binding site. Fusion of these small epitopes to VP60 was well tolerated, forming VLP and greatly enhanced the presentation of peptide to, and activation of CD4+ T helper cell hybridoma. To avoid constraints imposed on chimeric VLP and dramatically increase the versatility of RHDV VLP, rapid conjugation of antigen was carried out, employing the hetero-bifunctional chemical linker, sulpho-SMCC. Incorporation of sulfhydral groups by design or treatment with SATA allowed for great versatility, in turn enabling many diverse peptides and proteins to be conjugated to VLP. RHDV VLP and consequently the conjugated GFP antigen were efficiently taken up by DC with more than 85% of DC positive for GFP by flow cytometry. This was also visualised by confocal microscopy and electron microscopy of both gold- labelled VLP and conjugated antigen. RHDV VLP conjugate was shown to induce the significant up regulation of the activation markers CD40, CD80, CD86 and MHC class II on the surface of dendritic cells (DC). As well, DC pulsed with RHDV VLP/OVA effectively presented OVA to both CD4+ and CD8+ T cells transgenic for respective peptide-specific T cell receptors, eliciting a greater proliferative response in both T cell subsets than antigen delivered alone. The surface accessibility of peptides on VLP was demonstrated, while administration of VLP/Ovalbumin (OVA) conjugate in mice was shown to evoke very high titre antibody responses specific for conjugated antigen. VLP/OVA conjugates were also shown to induce IFN-γ production and OVA-specific cytotoxic killing in vivo, of up to 80% of fluorescently labelled, adoptively transferred target cells. No distinguishable cytotoxicity was detected in unimmunised control mice. This assay was also used to demonstrate the necessity for antigen to be conjugated to VLP, as antigen mixed with VLP induced only sub-optimal killing. To investigate the anti-tumour effects, mice vaccinated with VLP conjugated to OVA protein, CD4+ or CD8+ T cell OVA epitopes were inoculated with B16- OVA tumour cells and monitored for tumour growth. Untreated control mice had to be sacrificed by day 19, while mice immunised with either VLP/OVA or VLP conjugated with both CD4+ and CD8+ OVA epitopes, showed a significant delay in tumour growth (P = 0.0002), with one mouse remaining free of palpable tumour until day 92. These results show that RHDV VLP can be easily produced and purified and demonstrate the versatility of this RHDV capsid. Rapid conjugation techniques allowed the modification of VLP with both peptide and protein rendered these antigens highly immunogenic, stimulating both humoral and cell-mediated immunity targeted against conjugated antigens of choice. The versatility and immune stimulating properties of RHDV VLP provides a molecular tool with almost limitless applications within the fields of nanotechnology and immunology.
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3

Meller, Stephen Trevor. "The Anatomy of the periaqueductal gray in the rabbit / by Stephen Trevor Meller". Title page, contents and summary only, 1987. http://web4.library.adelaide.edu.au/theses/09PH/09phm5255.pdf.

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4

Sneddon, Ian Alexander. "Aspects of olfaction, social behaviour and ecology of an island population of the European rabbit (Oryctolagus cuniculus)". Thesis, University of St Andrews, 1985. http://hdl.handle.net/10023/2823.

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Olfactory behaviour in the European rabbit (Oryctolagus cuniculus) has been studied extensively under laboratory and semi-natural conditions. Results of observations on aspects of the olfactory behaviour of a free-living population of rabbits are presented. To facilitate interpretation of these results, considerable preliminary information about the population was collected. The study was conducted over a three year period on the Isle of May off the east coast of Scotland. A total of 326 rabbits were trapped and marked to permit identification in the field, and data on sex, age and social status of these individuals was collated. Data on the overall structure and fluctuations in the population are presented. The social organisation and home ranges of rabbits at four study sites throughout the three years are described. Observations indicate that the social organisation of free-living populations is more complex and variable than previous descriptions of semi-natural populations would have led us to expect. The reproductive performance of the population was investigated and intra and interwarren variations are analysed with respect to warren and group size. Results indicate an inverse relationship between warren size and reproductive success. The most frequently observed group composition (2 males, 2 females) was also the most reproductively successful. Daily and seasonal activity patterns of different age, sex and social status classes of rabbits are described. Olfactory communication was investigated by analysis of the frequency, daily and seasonal variation, and behavioural context of odour related activities performed by members of different age, sex and social status classes. The importance of using appropriate methods for the sampling of behaviour in field studies of olfaction is stressed. The present study concentrates on behaviour related to latrines; chin marking of the substrate and of conspecifics; enurination and urine squirting; and pawscraping. The results suggest that different scent products may carry similar information but analysis of variations in the frequency and context of odour deposition suggests that the deposition of scent fulfills a variety of functions.
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5

Cochran, Karina. "Where All Good Rabbits Go". Research Showcase @ CMU, 2016. http://repository.cmu.edu/theses/115.

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Herron, Fiona Michelle. "A study of digesta passage in rabbits and ringtail possums using markers and models". Thesis, The University of Sydney, 2002. http://hdl.handle.net/2123/483.

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The common ringtail possum (Pseudocheirus peregrinus), a member of the family Pseudocheiridae, is an arboreal folivorous marsupial that feeds predominantly on Eucalyptus foliage. Contrary to the expectation that small body size would inhibit utilisation of a diet containing such high levels of lignified fibre because of relatively low gut volume to body mass ratios and relatively high mass-specific metabolic rates and nutrient requirements (Hume 1999), the ringtail possum is able to survive solely on a diet of Eucalyptus foliage. The rabbit (Oryctolagus cuniculus) is a terrestrial herbivore and is a member of the family Leporidae that feeds predominantly on grasses. The rabbit was proposed as a digesta flow model for the ringtail possum since both are caecotrophic (periodically re-ingest caecal contents) and both are proposed to exhibit a colonic separation mechanism (CSM) where fluids and small, easily digested particles are preferentially returned to the caecum. The rabbit is of value for the modelling process since it is more accessible for experimental manipulation than the ringtail possum. This study investigated a proposal to use digesta passage through the gastrointestinal tract (GIT) of the rabbit as a model of digesta passage for the ringtail possum on the basis that both are caecotrophic caecum fermenters. A number of potential problems were identified with this proposal and investigation of these problems formed the basis for the research described in this thesis. Two main areas were identified as being potentially problematic: 1) fundamental flaws with the particulate markers used in digesta rate of passage studies; and 2) differences in animal behaviour and natural diet between the two subject species which suggested different digestive strategies and hence different patterns of digesta flow through the GIT. The proposed digesta passage markers were lanthanide metals (Dy, Tm, Eu and Yb) attached to either fibrous particles (1200 - 600�m) or formalin-fixed rumen bacteria (20 � 0.2�m). These markers were shown to not be of the assumed size classes and the extent of lanthanide metal binding differed between the four metals used. An effect due to method of dosing was also observed. The findings of marker inconsistencies caused major limitation to model development and further research is necessary to clarify these markers. The proposal to use digesta flow in the rabbit GIT as a model for digesta flow in the ringtail possum was shown to be idealistic due to the differences in anatomy and behaviour observed between the two herbivores. Laboratory observations, time series analysis and compartmental modelling confirmed the differences between the animals. This study showed: 1) the GIT of the rabbit was more complex both anatomically and functionally than that of the ringtail possum; 2) behaviour affecting digesta passage of the rabbit and ringtail were different and; 3) compartmental models confirmed the anatomical and behavioural findings. Digesta passage in the rabbit could not be modelled mathematically using data on digesta passage due to complexities of the system. In contrast, a basic model was constructed for digesta passage in the ringtail possum. On the basis of these findings, the research hypothesis "that digesta passage in rabbits is similar to that in ringtail possums" was rejected.
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7

Herron, Fiona Michelle. "A study of digesta passage in rabbits and ringtail possums using markers and models". University of Sydney. Biology, 2002. http://hdl.handle.net/2123/483.

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The common ringtail possum (Pseudocheirus peregrinus), a member of the family Pseudocheiridae, is an arboreal folivorous marsupial that feeds predominantly on Eucalyptus foliage. Contrary to the expectation that small body size would inhibit utilisation of a diet containing such high levels of lignified fibre because of relatively low gut volume to body mass ratios and relatively high mass-specific metabolic rates and nutrient requirements (Hume 1999), the ringtail possum is able to survive solely on a diet of Eucalyptus foliage. The rabbit (Oryctolagus cuniculus) is a terrestrial herbivore and is a member of the family Leporidae that feeds predominantly on grasses. The rabbit was proposed as a digesta flow model for the ringtail possum since both are caecotrophic (periodically re-ingest caecal contents) and both are proposed to exhibit a colonic separation mechanism (CSM) where fluids and small, easily digested particles are preferentially returned to the caecum. The rabbit is of value for the modelling process since it is more accessible for experimental manipulation than the ringtail possum. This study investigated a proposal to use digesta passage through the gastrointestinal tract (GIT) of the rabbit as a model of digesta passage for the ringtail possum on the basis that both are caecotrophic caecum fermenters. A number of potential problems were identified with this proposal and investigation of these problems formed the basis for the research described in this thesis. Two main areas were identified as being potentially problematic: 1) fundamental flaws with the particulate markers used in digesta rate of passage studies; and 2) differences in animal behaviour and natural diet between the two subject species which suggested different digestive strategies and hence different patterns of digesta flow through the GIT. The proposed digesta passage markers were lanthanide metals (Dy, Tm, Eu and Yb) attached to either fibrous particles (1200 - 600�m) or formalin-fixed rumen bacteria (20 � 0.2�m). These markers were shown to not be of the assumed size classes and the extent of lanthanide metal binding differed between the four metals used. An effect due to method of dosing was also observed. The findings of marker inconsistencies caused major limitation to model development and further research is necessary to clarify these markers. The proposal to use digesta flow in the rabbit GIT as a model for digesta flow in the ringtail possum was shown to be idealistic due to the differences in anatomy and behaviour observed between the two herbivores. Laboratory observations, time series analysis and compartmental modelling confirmed the differences between the animals. This study showed: 1) the GIT of the rabbit was more complex both anatomically and functionally than that of the ringtail possum; 2) behaviour affecting digesta passage of the rabbit and ringtail were different and; 3) compartmental models confirmed the anatomical and behavioural findings. Digesta passage in the rabbit could not be modelled mathematically using data on digesta passage due to complexities of the system. In contrast, a basic model was constructed for digesta passage in the ringtail possum. On the basis of these findings, the research hypothesis "that digesta passage in rabbits is similar to that in ringtail possums" was rejected.
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Laborda, Vidal Patricia. "Selection for ovulation rate in rabbits". Doctoral thesis, Universitat Politècnica de València, 2011. http://hdl.handle.net/10251/14121.

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El objetivo de esta tesis ha sido estudiar la respuesta directa a la selección por tasa de ovulación en conejo y las respuestas correlacionadas en tamaño de camada y tasas de supervivencia. Los animales pertenecían a una línea de conejos seleccionada por tasa de ovulación durante 10 generaciones. La selección se realizó en base al valor fenotípico de la hembra, que se midió el día 12 de la segunda gestación mediante laparoscopia. Se creó una línea control a partir de la recuperación de aproximadamente 470 embriones de 50 hembras donantes de la generación base. Los embriones fueron vitrificados y almacenados en nitrógeno líquido hasta su transferencia al final del experimento de selección (generación 10 de la línea seleccionada). Se midieron los siguientes caracteres: tamaño de camada (LS), estimada como el número total de gazapos al parto en un máximo de 5 partos; tasa de ovulación (OR), estimada como el número de cuerpos lúteos en los dos ovarios; tasa de ovulación derecha y tasa de ovulación izquierda (ROR y LOR); el número de embriones implantados totales (IE), en el lado derecho (RIE) y en el lado izquierdo (LIE); la diferencia ovulatoria (OD), definida como la diferencia entre ROR y LOR, expresada en valor absoluto; la diferencia de implantación (ID), definida como la diferencia entre RIE y LIE, expresada en valor absoluto; la supervivencia embrionaria (ES), calculada como IE/OR; la supervivencia fetal (FS), calculada como LS/IE; la supervivencia prenatal (PS), calculada como LS/OR. Se utilizó metodología bayesiana para analizar los datos. Las estimas de las heredabilidades de OR, LS, ES, FS y PS fueron 0.16, 0.09, 0.09, 0.24 y 0.14, respectivamente. Las estimas de las correlaciones fenotípicas de OR con LS, ES, FS y PS fueron 0.09, -0.07, -0.26 and -0.28, respectivamente. Las estimas de las correlaciones genéticas de OR con LS y ES tuvieron una baja precisión, y no se pudo concretar su signo. Las estimas de las correlaciones genéticas de OR con FS y PS fueron negativas (probabilidad de ser negativa de 1.00 y 0.98, respectivamente). Las correlaciones fenotípicas y genéticas entre LS y las tasas de supervivencias fueron positivas (probabilidad de ser positivas de 1.00).
Laborda Vidal, P. (2011). Selection for ovulation rate in rabbits [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/14121
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Sarich, Troy Casimir. "Studies on isoniazid-induced hepatotoxicity in rabbits". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq25150.pdf.

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Rubins, Ian Michael. "Allotransplantation of frozen irradiated menisci in rabbits". Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61219.

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The meniscus is essential for normal knee function. Previously considered unimportant, removal was performed when injured. This frequently led to degenerative arthritic changes. Today surgeons attempt to repair or minimally resect torn menisci, however many patients are encountered with irreparable tears or previously removed menisci. In these patients meniscale transplantation may prevent degenerative arthritis from developing.
Problems facing transplantation are ability to store tissues and prevent disease transmission. To overcome this, freezing and irradiation effects were examined on 60 rabbits undergoing medial meniscal transplantation. Fresh, frozen, and frozen-irradiated allografts were followed up to 17 months, 10 other rabbits underwent meniscectomy alone.
Zero-time studies revealed that freezing with or without irradiation rendered cells non-viable with no changes in mechanical properties. At long term follow-up, all grafts healed, and showed repopulation with metabolically active cells determined radioautographically. Mechanical properties were unchanged, except for a decreased time constant in the frozen group. Degenerative changes were not significantly different among groups.
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Libros sobre el tema "Rabbits"

1

Endres, Hollie J. Rabbits. Minneapolis, MN: Bellwether Media, 2007.

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Morgan, Sally. Rabbits. London: Franklin Watts, 2012.

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Spilsbury, Louise. Rabbits. Chicago, Ill: Heinemann Library, 2006.

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Richardson, V. C. G., ed. Rabbits. Oxford, UK: Blackwell Science Ltd, 2000. http://dx.doi.org/10.1002/9780470693780.

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Hinds, Kathryn. Rabbits. New York: Benchmark Books, 1999.

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Johnson, Jinny. Rabbits. Mankato, Minn: Smart Apple Media, 2009.

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Meister, Cari. Rabbits. Minneapolis, MN: Bullfrog Books, 2015.

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Walker, Kathryn. Rabbits. London: Wayland, 2007.

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Spilsbury, Louise. Rabbits. Oxford: Heinemann Library, 2006.

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Studio, Blue Lantern, ed. Rabbits. San Francisco: Chronicle Books, 1993.

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Capítulos de libros sobre el tema "Rabbits"

1

Alter, Torin, Robert J. Howell y Amy Kind. "Rabbits and Rabbit Stages". En Philosophy of Mind, 139–45. New York: Routledge, 2023. http://dx.doi.org/10.4324/9781003179191-27.

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Lewis, Jessica H. "Rabbits". En Comparative Hemostasis in Vertebrates, 181–92. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-9768-8_16.

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Banks, Ron E., Julie M. Sharp, Sonia D. Doss y Deborah A. Vanderford. "Rabbits". En Exotic Small Mammal Care and Husbandry, 49–59. Ames, Iowa, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119265405.ch4.

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Lukefahr, Steven D., James I. McNitt, Peter R. Cheeke y Nephi M. Patton. "Introduction: history, taxonomy, and domestication of the rabbit." En Rabbit production, 1–12. 10a ed. Wallingford: CABI, 2022. http://dx.doi.org/10.1079/9781789249811.0001.

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Abstract The potential output of rabbit meat and fur production, rabbits as pets and laboratory animal, and factors limiting rabbit production are discussed in this chapter while highlighting its history, taxonomy and domestication.
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Baselga, Manuel, István Nagy, Miriam Piles, Hervé Garreau, Luca Buttazzoni, Zsolt Szendrő y María-Luz García. "Genetic improvement in the meat rabbit." En The genetics and genomics of the rabbit, 234–49. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781780643342.0013.

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Lukefahr, Steven D., James I. McNitt, Peter R. Cheeke y Nephi M. Patton. "Rabbit breeds." En Rabbit production, 23–43. 10a ed. Wallingford: CABI, 2022. http://dx.doi.org/10.1079/9781789249811.0003.

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Marsiglio, William y Kendra Siler-Marsiglio. "Rescue Rabbits". En The Male Clock, 141–58. Rotterdam: SensePublishers, 2015. http://dx.doi.org/10.1007/978-94-6300-013-0_14.

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Taylor, Karen Heller. "Orphan Rabbits". En Hand-Rearing Wild and Domestic Mammals, 5–12. Oxford, UK: Blackwell Publishing Ltd, 2008. http://dx.doi.org/10.1002/9780470385005.ch1.

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Lukefahr, Steven D., James I. McNitt, Peter R. Cheeke y Nephi M. Patton. "Pet rabbits." En Rabbit production, 260–65. 10a ed. Wallingford: CABI, 2022. http://dx.doi.org/10.1079/9781789249811.0018.

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Drees, Randi. "Rabbits and Rodents". En Veterinary Computed Tomography, 509–16. West Sussex, UK: John Wiley & Sons, Ltd., 2013. http://dx.doi.org/10.1002/9781118785676.ch48.

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Actas de conferencias sobre el tema "Rabbits"

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Boyko, O., Havrysh O. y Luchyn I. "Efficiency of crossing rabbits of different breeds for improving indicators of meat productivity under conditions of intensive production". En Scientific and practical conference with international participation: "Management of the genetic fund of animals – problems, solutions, outlooks". Scientific Practical Institute of Biotechnologies in Animal Husbandry and Veterinary Medicine, 2023. http://dx.doi.org/10.61562/mgfa2023.04.

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According to the results of the study of indicators of the productivity of rabbits of different breeds when using industrial crossbreeding, which was carried out based on the experimental rabbit farm of the Cherkassy research station of bioresources of the National Academy of Sciences of the Soviet Chinchilla breed of female rabbits and gray males, it was established that under the conditions of intensive rabbit production, the re-productive qualities of Soviet chinchilla female rabbits the combination with males of the gray giant, New Zealand white breeds increases by 10-15%. Also, the use of Soviet chin-chilla female rabbits in industrial crossbreeding, and gray giant and New Zealand white males as parental males, allows for increasing the maternal indicators of female rabbits, fattening, and meat productivity indicators of the obtained young rabbits. The best indica-tors of fattening and meat productivity in young animals were established during inter-breeding of rabbits of the studied groups with a probable superiority over animals of pure-bred breeding - fattening indicators: live weight at 90 days of age by 4.0; 3.8% (p<0.05); average daily increases of 4.7-5.4% (р<0.05...0.01); waist width by 5.6-8.7% (р<0.01).
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Caraman, Mariana, Larisa Cremeneac, Roman Moscalic y Oleg Cojușneanu. "Dinamica efectivului de iepuri în Republica Moldova în perioada anilor 1980-2022". En Scientific and practical conference with international participation: "Management of the genetic fund of animals – problems, solutions, outlooks". Scientific Practical Institute of Biotechnologies in Animal Husbandry and Veterinary Medicine, 2023. http://dx.doi.org/10.61562/mgfa2023.06.

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The purpose of this work consisted in the analysis of scientific literary sources and the database of the National Bureau of Statistics regarding the dynamics of the rabbit population during the years 1980-2022. The paper reflects the economic importance of raising domestic rabbits, the percentage ratio of the categories of rabbit meat producers, the problems faced by peasant households and agricultural enterprises. As a result of the study, it was found that in order to increase the profitability of rabbit farms, it is necessary to use more efficient breeds of rabbits characterized by increased precocity and prolificacy, the implementation of scientifically proven technologies for improving, breeding, feeding and maintaining rabbits.
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Vasilevich, F. I. y A. M. Vepreva. "RABBITS AS PARATENIC HOSTS OF TOXOCARA CANIS". En THEORY AND PRACTICE OF PARASITIC DISEASE CONTROL. All-Russian Scientific Research Institute for Fundamental and Applied Parasitology of Animals and Plant – a branch of the Federal State Budget Scientific Institution “Federal Scientific Centre VIEV”, 2023. http://dx.doi.org/10.31016/978-5-6048555-6-0.2023.24.123-127.

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Toxocariasis is both a veterinary and medical problem worldwide. A feature of Toxocara biology is that Toxocara larvae commit visceral larva migrans, damage the liver, lungs, and other organs and tissues in non-specific hosts, including humans. Constant reinvasion leads to the accumulation of stage 2–3 larvae in the body of nonspecific (paratenic) hosts. The problem of parasitological contamination of soil on the territory of rabbit farms and the risks of infection of rabbits were considered. Therefore, it became necessary to study the involvement of the rabbit as a paratenic host in toxocariasis. An experiment was conducted on Soviet Chinchilla rabbits. Toxocara eggs were administered orally. Hematological parameters were examined according to common methods. In order to identify specific IgG antibodies, blood serum was examined by enzyme immunoassay (ELISA). IgG present in the rabbits’ blood serum with a positive titer (1:100) in ELISA allows us to conclude that rabbits along with other animals are paratenic hosts of Toxocara canis. Hematological parameters in the animals of the experimental and control groups did not have significant differences and were within the physiological range throughout the entire experiment.
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Ehrlich, H. J., N. U. Bang, N. L. Esmon y C. T. Esmon. "IN VIVO BEHAVIOR OF DETERGENT SOLUBILIZED PURIFIED RABBIT THROMBOMODULIN INJECTED INTO RABBITS". En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643966.

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Thrombomodulin (TM) is a thrombin (T) endothelial cell membrane receptor; the TM-T complex readily activates protein C resulting in anticoagulant activity. We investigated the biological effects of detergent solubilized purified rabbit TM upon i.v. injection into rabbits. 125I-labelled TM (lactoperoxidase method) disappeared from the circulation to a t 1/2 of 2.5 h.The administration to rabbits of 2 doses of 50 μg/kg endotoxin 24 h apart did not accelerate the turnover rate of TM. In vitro tests demonstrated that .27 nM TM was required to significantly prolong the activated partial thromboplastin time (APTT) and .54 nM to significantly prolong the thrombin clotting time (TCT). At 3.78 nM TM, both the APTT and TCT prolonged to infinity while the prothrombin time (PT) was minimally affected. When TM was injected into rabbits in doses of 100, 200 and 500 μg/ml APTT and TCT immediately prolonged in a dose dependent fashion whereas no effect on the PT was observed. The disappearance rate of anticoagulant activity (prolongation of the APTT and TCT) closely paralleled the disappearance rate of 125I-labelled TM; t 1/2 for anticoagulant activity being 2.0 h irrespective of the dose administered. Thus, detergent solubilized purified rabbit TM survives in the circulation for appreciable time periods. While in the circulation TM is capable of binding T thereby prolonging the TCT as well as activating protein C thereby causing degradation of factors Va and VIIIa resulting in a prolongation of the APTT. Therefore, TM administered i.v. results in an anticoagulant effect of surprisingly long duration.
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Peiffer, Véronique, Ethan M. Rowland, Stephanie G. Cremers, Peter D. Weinberg y Spencer J. Sherwin. "Age-Related Differences in Haemodynamics of the Rabbit Aorta and Comparison With Average Maps of Atherosclerotic Lesion Prevalence". En ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80310.

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The focal occurrence of atherosclerotic lesions around branching points and in curved vessels has led to the hypothesis that haemodynamics plays an important role in the development of the disease. The spatial distribution of atherosclerosis is also age-dependent in humans and rabbits [1]; detailed maps of disease prevalence in aortas of immature and mature rabbits were presented recently [2]. Vincent et al. [3] applied computational fluid dynamics to study blood flow in the aorta of a mature rabbit, but they did not investigate age-dependent effects. The purpose of the present study was to quantify differences in aortic haemodynamics between immature and mature rabbits, and to compare averaged distributions of the flow-related wall shear stress with maps of disease prevalence. As blood flow is heavily dependent on vessel geometry, the shapes of the aorta in the two age groups were also compared.
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Verbeuren, T. J., M. J. Van Diest y A. G. Herman. "CONTRACTIONS TO PLATELETS IN AORTAS OF CONTROL AND CHOLESTEROL-FED RABBITS". En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643799.

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Atherosclerotic aortas obtained from cholesterol-fed rabbits show a decreased responsiveness to noradrenaline, an increased responsiveness to low concentrations of serotoninand an unaltered responsiveness to prostaglandins. In vitro contractions induced by aggregating platelets are largely due to serotonin liberated during the aggregation. The present study was designed to compare the contractile responses to aggregating platelets inaortas obtained from control and cholesterol-fed rabbits.Male New Zealand rabbits were fed either a control or a 0.3% cholesterol diet during 16 weeks. Macroscopic and microscopic examination of the luminal surface of the aortas obtained from these animals revealed a substantial amount of fatty streaks in the tissuesobtained from the cholesterol-fed rabbits. Segments of the aortic arch of the rabbits were then mounted in organ chambers for isometric tension recording.In both the control and the atherosclerotic aortas increasing concentrations of platelets evoked contractions; the contractions obtained with the lower concentrations of platelets were significantly greater in the atherosclerotic tissues. The maximal responses and the ED50-values were comparable in both groups of blood vessels. No significant differences were observed when platelets obtained from control or hypercholesterolemic rabbits were compared. In the control and the atherosclerotic aortas the thromboxane receptorantagonist BM13505 at 2 x 10-5M did not significantly affect the contractionsto platelets obtained from either control or cholesterol-fed rabbits. The serotonin receptor antagonist ketanserin at 5 x 10-8M nearly abolished the responses to platelets in bothgroups of aortas.These experiments illustrate that (1) thecontractions induced by rabbit platelets in control and atherosclerotic aortas are mediated by serotonin and (2) the responses to platelets, as those to serotonin, are augmented in the atherosclerotic preparations.
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Mitropoulos, K. A., S. J. Walter, T. W. Meade y M. P. Esnouf. "INCREASED FACTOR VII REACTIVITY IN THE RABBIT FOLLOWING DIET-INDUCED HYPERCHOIESTEROIAEMIA". En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643802.

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The association of factor VII coagulant activity (VIIC) with plasma lipid concentrations has been a consistent feature of a number of studies in man and points to plasma lipoproteins as determinants of VIIC.To modify plasma lipoprotein concentrations and to study the effect of this on VIIC, rabbits were fed a 1%- cholesterol-supplemented diet. Treatment resulted in a many-fold increase in plasma cholesterol concentration with the major fraction of excess cholesterol associated with the very low and intermediate density lipoprotein fractions. VIIC was considerably higher in rabbits fed 1%- cholesterol-supplemented than in rabbits fed the standard diet. In both groups of rabbits, the direction and extent of variation in VIIC coincided with variation in cholesterol concentration so that over time there were significant and positive correlations between VIIC and plasma cholesterol. A method that provides a measure of the total functionalfactor VII concentration (VII) was also used. This assay involves clotting the plasma in the presence of excess tissue factor and therefore the conversion of VII tothe more reactive two-chain form of theprotein (αVIIa) .The concentration of αVIIa present in the serum was measured from the rate of activation of excess of [sialyl-3H]-bovine factor X. By day 10 of treatment, and in all furthercomparisons VTIt was only slightly higher in the group of rabbits fed cholesterol-supplemented than in that fed the standard diet.This increase in VI11 istoo small to explain the considerable increasin VIIC in the hypercholesterolaemic rabbit. We conclude thattheincrease in VIIc was to ahigher proportion of αVIIa in theplasma of hyperchol⋆esterol-aemic rabbits rather thanto an increase in the concentration of the single-chain protein.
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LV, WEN-TAO, CHENG-HUI ZHU, XIANG-WEN MENG y HUI ZHI. "THE EXPERIMENTAL STUDY OF CUPPING THERAPY INTERVENING THE RABBIT MODEL OF COLD STAGNATION LEADING TO BLOOD STASIS SYNDROME BASED ON THE BIOCHEMICAL CRITERION". En 2021 International Conference on Education, Humanity and Language, Art. Destech Publications, Inc., 2021. http://dx.doi.org/10.12783/dtssehs/ehla2021/35719.

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Objective: Explore the partial mechanisms of cupping therapy by means of the cellular factors in the peripheral blood cells; methods: Replicate the rabbit model of cold stagnation leading to blood stasis by adopting the cold stimulation and randomly dividing 12 rabbits to three groups based on the weight. Observe the sign of the rabbits before and after cupping test, the content of the vascular endothelial growth factor (VEGF), epidermal growth factor (EGF)in the peripheral blood; Results: After replicated the model, the model group and the treatment group gradually appeared the sign of cold stagnation leading to blood stasis. After cupping treatment, the sign of cold stagnation leading to blood stasis of the rabbits gradually disappeared. Compared with the blank controlled group and the model group at the same time, the epidermal growth factor (EGF)in the peripheral blood of the treatment group was much higher after cupping and was statistically difference (p<0.05); Conclusion: The rabbit model of cold stagnation leading to blood stasis could be successfully replicated by the cold irritation; Cupping therapy could produce benign physical stimulation to the local skin through the expression of the cell factors, which might generate continuous weak stimulation, expand and improve the capillaries, thus formed the cascade reaction, and affected the entire microcirculation. Therefore this might be one of the mechanisms of “dredging collaterals”, effect that cupping therapy produced.
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Rand, M. L., H. M. Groves, R. L. Kinlough-Rathbone, M. A. Packham y J. F. Mustard. "ETHANOL INHIBITS RABBIT PLATELET RESPONSES TO COLLAGEN IN VITRO BUT DOES NOT AFFECT RABBIT PLATELET ADHERENCE TO DE-ENDOTHELIALIZED A0RTAE IN VIVO". En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643547.

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Epidemiological studies indicate that moderate consumption of alcohol is associated with a reduced risk of coronary heart disease, but it is not known whether inhibition of platelet functions by ethanol is involved. We studied the effects of ethanol on rabbit platelet responses to collagen in vitro and in vivo. Addition of ethanol (4 mg/ml) to suspensions of washed platelets prelabelled with [14c]serotonin inhibited aggregation and secretion in response to low (0.4 μg/ml) concentrations of acid soluble collagen (14% secretion without ethanol, 3% secretion with ethanol). With a higher concentration of collagen (1.25 μg/ml), 4 mg/ml ethanol had no inhibitory effect. The inhibitory effect of ethanol on collagen-induced aggregation was also observed in citrated platelet-rich plasma (c-PRP) to which ethanol was added in vitro and in c-PRP from rabbits given ethanol acutely by gavage (3.5 g/kg) 30 min before blood sampling. The accumulation of [51cr]-labeled platelets on the subendothelium of rabbit aortae de-endothelialized with balloon catheters was measured in vivo in rabbits given ethanol (blood ethanol concentration at time of vessel wall injury: 4.1 ± 0.2 mg/ml, mean ± S.E., n=6). Ten min after de-endothelialization, there was no difference between the number of platelets adherent per square mm of injured aorta of control rabbits (39,400 ± 2,600, mean ± S.E., n=6) and intoxicated rabbits (36,800 ± 3,700, mean ± S.E., n=6). Thus, although ethanol inhibits platelet aggregation and secretion in response to collagen in vitro and ex vivo, it does not alter platelet adherence to the subendothelium, including its constituent collagen, in vivo. Therefore, it is unlikely that ethanol exerts its beneficial effects against coronary heart disease by altering the initial adherence of platelets to injured vessel walls.
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Laekeman, G. M., A. Van Hoydonck, M. Van Diest y A. G. Herman. "CHANGES IN PGE2 AND TXB2 FORMATION BY PLATELETS OF ATHEROSCLEROTIC RABBITS". En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644812.

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The synthesis of thromboxane B2 (TXB2) and prostaglandin E2 (PGE2) were studied in groups of 9 rabbits fed a normal diet or a diet containing 0.3 % of cholesterol. After 16 weeks, a platelet rich suspension containing 300.000 platelets/mm3 was prepared. Portions were incubated at 37°C with arachidonic acid (AA). Biosynthesis of PGE2, TXA2 and TXB2 was evaluated by the bioassay cascade system (rabbit coeliac and mesenteric artery and rat fundus strip) and by radioimmunoassay (RIA) :No significant differences were recorded for TXB2 after 1 or 10 minutes incubationA small portion of blood without EDTA was allowed to clot at 37°C during 1 hour. TXB2 was measured in the serum by RIA. The mean ± SEM obtained for the atherosclerotic rabbits (82.70 ± 9.28 ng/ml) was significantly higher than the one for the normal group (42.66 ± 11.45 ng/ml) (P < 0.02, n = 9 for both groups. From these results it can be concluded that platelets of atherosclerotic rabbits apparently synthetize less PGE2 when incubated with AA, and more TXB2 during a standardized clotting process
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Informes sobre el tema "Rabbits"

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Min, Byungrok, Il Suk Kim y Dong U. Ahn. Dietary Cholesterol Affects Lipid Metabolism in Rabbits. Ames (Iowa): Iowa State University, enero de 2015. http://dx.doi.org/10.31274/ans_air-180814-1348.

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Brown, Larry D., Jr Korte y Don W. Acute Dermal Toxicity of Diethyleneglycol Dinitrate in Rabbits. Fort Belvoir, VA: Defense Technical Information Center, septiembre de 1988. http://dx.doi.org/10.21236/ada201956.

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Hiatt, Gerald F., Jr Korte y Don W. Primary Eye Irritation Potential of Diethyleneglycol Dinitrate (DEGDN) in Rabbits. Fort Belvoir, VA: Defense Technical Information Center, octubre de 1988. http://dx.doi.org/10.21236/ada201961.

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Coppes, Valerie G., Charlotte L. Speckman, Jr Korte y Don W. Developmental Toxicity Potential of Hydroxyuera, a Positive Control, in Rabbits. Fort Belvoir, VA: Defense Technical Information Center, mayo de 1988. http://dx.doi.org/10.21236/ada196063.

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Moretz, Ruth W., James H. Manthei, Jeffry S. Forster, Bernardita I. Gaviola y Charlene M. Corun. Department of Transportation Dermal Test of Neutralized GB Hydrolysate in Rabbits. Fort Belvoir, VA: Defense Technical Information Center, julio de 2009. http://dx.doi.org/10.21236/ada503472.

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6

Sano, Steven K., Jr Korte y Don W. Acute Dermal Toxicity Potential of Guanidine Nitrate in Male and Female Rabbits. Fort Belvoir, VA: Defense Technical Information Center, julio de 1988. http://dx.doi.org/10.21236/ada198494.

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7

Ju, Nengjiu, Robert Parrino, Allen Poteshman y Michael Weisbach. Horses and Rabbits? Optimal Dynamic Capital Structure from Shareholder and Manager Perspectives. Cambridge, MA: National Bureau of Economic Research, noviembre de 2002. http://dx.doi.org/10.3386/w9327.

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Pikkemaat, M. G., J. Jager, L. J. M. Jansen, E. F. Hoek-van den Hil, R. G. Hobé, I. Barbu y E. D. van Asselt. Prioritising veterinary drug residues : for monitoring in aquaculture, farmed game, rabbits and honey. Wageningen: Wageningen Food Safety Research, 2022. http://dx.doi.org/10.18174/571272.

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Hurley, Jonathan M., Dean Wagner, Teresa R. Sterner y David R. Mattie. Acute Dermal Irritation Study of JP-8 and S-8 in New Zealand White Rabbits. Fort Belvoir, VA: Defense Technical Information Center, enero de 2011. http://dx.doi.org/10.21236/ada546698.

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Peralta, Airy y Chris Ray. Lagomorph ladders: Assessing a multi-host community and potential for spillover of rabbit hemorrhagic disease at Great Sand Dunes National Park and Preserve. National Park Service, 2024. http://dx.doi.org/10.36967/2303667.

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Resumen
Rabbit hemorrhagic disease virus type 2 (RHDV2) has caused dramatic declines in rabbits and hares on several continents, with cascading effects on local ecology. Recent mortalities have been reported for several rabbit and hare species in the United States, suggesting broad susceptibility of lagomorphs. If this susceptibility extends to the American pika (Ochotona princeps), the most cold-adapted lagomorph, it could compound climate-mediated threats to this species. Due to climate change, American pikas are predicted to experience significant upslope range retraction during this century. Using an analogy borrowed from wildfire scenarios, other lagomorph species occurring at lower and mid-elevations could act as ?ladder fuels? to wick RHDV2 into high-elevation pika populations. To address this concern, we investigated spatial patterns of habitat use by pikas and other lagomorphs in Great Sand Dunes National Park and Preserve (GRSA), which borders several counties that have reported RHDV2. In 2022, we surveyed 115 plots from a spatially balanced sample of pika habitats in the park, including 48 legacy plots from a pika survey conducted in 2010-2012. Pika detections at the plot level were paired with topographic and environmental indices to estimate minimum habitat occupancy and determine its covariates. Leporid (rabbit and hare) detections at these same plots were used to model presence using similar covariates and correcting for imperfect detection. Our best-supported models of pika and leporid presence were then used to estimate the probability of contact between these taxa within the park. Our mean estimate of pika habitat occupancy was at least 95% during 2022 in GRSA, slightly higher than in 2010-2012, and effects of elevation and precipitation on pika occupancy were as expected from the previous study. Leporid presence at these same plots was 48% after correcting for imperfect detection. The best model of leporid presence supported a negative effect of elevation, in agreement with other studies of these taxa. The best pika and leporid models also included a positive effect of incoming solar radiation. Finally, we used our best models of pika habitat occupancy and leporid presence within the park to map the potential for areas of contact and RHDV2 transmission between these taxa. Our results indicate some potential for contact within subalpine forests, Specifically in the northern half of the park near the lower reach of the Sand Creek Trail and in the far south just north of California Peak.
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