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1
Yenice, G., O. Kaynar, M. Ileriturk, F. Hira e A. Hayirli. "Quality of eggs in different production systems". Czech Journal of Food Sciences 34, No. 4 (5 settembre 2016): 370–76. http://dx.doi.org/10.17221/33/2016-cjfs.
Testo completoAbstract (sommario):
This experiment was carried out to compare morphological egg quality parameters, as well as lipid and protein profiles, of brown eggs laid by chickens reared under different production systems: cage, free-range, and family type. A total of 270 brown eggs were obtained from commercial poultry companies raising Lohmann Brown laying hens in a cage system and free-range unit as well as families possessing hens in their yards. The egg lipid and protein contents, as well as lipid and protein profile, varied among the production systems. However, eggs from the free-range system had similar characteristics to those from the cage system. Quality of eggs from the family type system was quite variable. In conclusion, egg quality can be affected by the production system.
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Chaudhari, D. J., e A. S. Tingre. "Forecasting eggs production in India". Indian Journal of Animal Research 49, n. 3 (2015): 367. http://dx.doi.org/10.5958/0976-0555.2015.00143.0.
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Cargill, Peter. "Achieving sustainable production of eggs". Avian Pathology 47, n. 3 (14 marzo 2018): 334–35. http://dx.doi.org/10.1080/03079457.2018.1445067.
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Binh Nguyen, Tran Thi, Nguyen Huu Duc e Nguyen Thi Dieu Thuy. "ASSOCIATION OF PROLACTIN GENE POLYMORPHISM WITH EGG PRODUCTION TRAIT IN LIEN MINH CHICKEN". Vietnam Journal of Biotechnology 16, n. 2 (17 dicembre 2018): 259–66. http://dx.doi.org/10.15625/1811-4989/16/2/13435.
Testo completoAbstract (sommario):
Lien Minh chicken is an indigenous breed with several favorable properties, such as good meat quality and associated with the economic development of the people in the Lien Minh village, Cat Hai, Hai Phong. Chicken prolactin is a candidate gene involved in egg production trait. The aim of this study was to investigate the association of single nucleotide polymorphism (SNP) of Prolactin gene (PRL) concerning with reproductive trait in Lien Minh chicken. All hens were kept in individual laying cage and phenotypic data for total 90 hens were recorded as following: age at first egg, first egg’s weight, number of eggs, eggs’ weight, and eggs’ shape index. Blood samples were used for DNA extraction and then genotyping by PCR-RFLP method. Two SNPs of PRL gene were analyzed including: 24 bp indel in promoter (PRL24) and C2402T in 5' flanking region (PRL5). The polymorphic sites at PRL24 and PRL5 showed two genotypes with the frequency of ID (0.27), DD (0.73) and CT (0.41), TT (0.59), respectively. Allele frequencies of PRL24 and PRL5 were: I (0.13), D (0.87) and C (0.21), T (0.79), respectively. Genotypes ID PRL24 and CT at PRL5 showed the highest values of mean weight of eggs 47.57 ± 3,11 g and 46.91 ± 4.29 g, respectively (P < 0.05). In addition, the individual with genotype ID, CT also gave better reproductive characteristics such as number of eggs, first egg’s weight. These results suggested that the beneficial alleles/genotypes could be used to support the improvement of the egg production capacity in the breeding of Lien Minh chicken.
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JONES, FRANK T., DAVID V. RIVES e JOHN B. CAREY. "Salmonella Contamination in Commercial Eggs and an Egg Production Facility". Poultry Science 74, n. 4 (aprile 1995): 753–57. http://dx.doi.org/10.3382/ps.0740753.
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Pavlovski, Z., Z. Skrbic e M. Lukic. "Table eggs of known origin and guaranteed quality: Brand egg". Biotehnologija u stocarstvu 23, n. 5-6-1 (2007): 485–95. http://dx.doi.org/10.2298/bah0701485p.
Testo completoAbstract (sommario):
The fact that most of consumers according to polls and questionnaires in our country, value the most freshness of eggs, and that at the same time they are not satisfied with it, there is necessity to provide guaranteed fresh eggs of high quality. Similar situation in other countries and cities in Serbia has induced some of producers of table eggs to develop production programs and marketing of eggs of known origin and guaranteed quality. Table eggs are produced and sold according to demands of consumers with integrated control system based on two EU Directives (No 1907/90 and No 1274/91). Program contains several components (defining of brand, production, quality control, commercial advertising) and each of the components is of conceptual importance, integral part and as such cannot be left out or neglected. In general, product of such Program cannot be only brand egg but result of entire integrated system of production, sale, quality control, marketing, and represent links in the chain - from producer of eggs to consumer.
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Widiyaningrum, P., L. Lisdiana e N. R. Utami. "EGG PRODUCTION AND HATCHABILITY OF LOCAL DUCKS UNDER SEMI INTENSIVE VS EXTENSIVE MANAGEMENTS". Journal of the Indonesian Tropical Animal Agriculture 41, n. 2 (1 luglio 2016): 77–82. http://dx.doi.org/10.14710/jitaa.41.2.77-82.
Testo completoAbstract (sommario):
The study aimed to compare the egg production and hatchability of local ducks under different management systems, namely semi-intensive and extensive. The research conducted was an experimental one-way classification withtwo treatments.Each treatment used 15 male and 120 females (mating ratio 1:8), and ducks aged 13-14 months. Eggs production was recorded during three weeks period. About300 eggs were selected from each treatment to be hatched. Fertility was observedat 4th days of hatching process using egg candler. Data of eggs production, eggs weight, fertility,and hatchability were analyzed using unpaired two sample Student’s t-test. The results showed that average of egg weight, fertility and hatchability were notdifferent under two managementsystem, but egg production in the semi-intensive maintenance was significantly higher (P<0.05) thanthose inthe extensive system.Egg production in the semi-intensivewas 12.3% higher than those in the extensive.In conclusion, the semi-intensive system that is applied in this study the number of eggs production but did not affect the average of egg weight, fertility and hatchability.
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Perić, Lidija, Mirjana Đukić Stojčić e Siniša Bjedov. "Effect of Production Systems on Quality and Chemical Composition of Table Eggs". Contemporary Agriculture 65, n. 3-4 (1 dicembre 2016): 27–31. http://dx.doi.org/10.1515/contagri-2016-0014.
Testo completoAbstract (sommario):
SummaryProduction system is one of the most important factors which have an effect on egg quality. In recent years consumers have paid more attention to the housing system in which eggs are produced with a significant increase of their interest in organic and functional food. Some consumers perceive omega-3 enriched eggs and free range eggs as beneficial for their health. Therefore, the aim of this work was to determine the chemical composition and the internal and external quality of eggs produced in conventional cages, free range systems and of omega-3 enriched eggs. Samples of 30 eggs from three different production systems were taken from the market. For eggs from each system the internal and external egg quality traits were examined as well as the protein and fat content. The results showed lower fat content in eggs from cages (P<0.05). Free range and omega-3 eggs had higher content of protein in egg white compared to the conventional ones (P<0.05). Production system significantly influenced the shell breaking strength, Haugh units and yolk color. The shell breaking force was significantly higher in free range eggs (P<0.05). The highest value of Haugh units was found in free range eggs and the lowest in omega-3 enriched eggs. The results of this work confirmed that there are differences in quality and the chemical composition of eggs from different production systems.
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Berrang, M. E., J. F. Frank, R. J. Buhr, J. S. Bailey, N. A. Cox e J. M. Mauldin. "Microbiology of Sanitized Broiler Hatching Eggs Through the Egg Production Period". Journal of Applied Poultry Research 6, n. 3 (ottobre 1997): 298–305. http://dx.doi.org/10.1093/japr/6.3.298.
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Chekh, Oleksandr, Olga Bordunova, Vadym Chivanov, Evgenia Yadgorova e Larisa Bondarchuk. "Nanocomposite coatings for hatching eggs and table eggs". Open Agriculture 6, n. 1 (1 gennaio 2021): 573–86. http://dx.doi.org/10.1515/opag-2021-0046.
Testo completoAbstract (sommario):
Abstract Theoretical and applied aspects of the concept of using biomimetic protective coatings GREEN ARTICLE (ARTIficial cutiCLE) in the poultry industry, namely in the production of table and hatching eggs, are developed. The basic matrix component of the protective coatings GREEN ARTICLE is chitosan, an environmentally friendly, inexpensive, and harmless material. It is experimentally proved that electrochemical and ultrasonic technologies for modifying a solution of chitosan in peroxide compounds (peracetic acid and hydrogen peroxide) with nanoparticles of oxides like titanium, iron, zinc, and metals, such as titanium, copper, and calcite, allow to create protective coatings of double action in accordance with the technologies: (a) extending the shelf life of table eggs, food green article (FGA) and (b) preventing contamination of hatching eggs with pathogenic microflora, increasing the hatchability of eggs, and the quality of chicken, hatching green article (HGA). In the technology of storing table eggs, artificial cuticles based on chitosan FGA are characterized by the following characteristics: increased thickness of 6–10 µm, low gas and moisture permeability, and high biocidal activity against pathogenic bacteria and viruses. It is shown that the use of FGA technology in the production of table eggs can extend the period of transportation and storage of products by 33–35 days at a temperature of 24°C and maintained a grade A (Haugh unit = 71–60) through the entire 35 days period. The technology HGA reduces the rate of contamination of hatching eggs with pathogenic microflora by 99.29–99.7%, while increasing the egg hatching rate by 2.3–11.6% compared to the control, depending on the cross of the poultry and the storage conditions of the hatching eggs. It is important that these technologies have a great prospect for application in countries that develop green technologies for the production of poultry products.
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Chekh, Oleksandr, Olga Bordunova, Vadym Chivanov, Evgenia Yadgorova e Larisa Bondarchuk. "Nanocomposite coatings for hatching eggs and table eggs". Open Agriculture 6, n. 1 (1 gennaio 2021): 573–86. http://dx.doi.org/10.1515/opag-2021-0046.
Testo completoAbstract (sommario):
Abstract Theoretical and applied aspects of the concept of using biomimetic protective coatings GREEN ARTICLE (ARTIficial cutiCLE) in the poultry industry, namely in the production of table and hatching eggs, are developed. The basic matrix component of the protective coatings GREEN ARTICLE is chitosan, an environmentally friendly, inexpensive, and harmless material. It is experimentally proved that electrochemical and ultrasonic technologies for modifying a solution of chitosan in peroxide compounds (peracetic acid and hydrogen peroxide) with nanoparticles of oxides like titanium, iron, zinc, and metals, such as titanium, copper, and calcite, allow to create protective coatings of double action in accordance with the technologies: (a) extending the shelf life of table eggs, food green article (FGA) and (b) preventing contamination of hatching eggs with pathogenic microflora, increasing the hatchability of eggs, and the quality of chicken, hatching green article (HGA). In the technology of storing table eggs, artificial cuticles based on chitosan FGA are characterized by the following characteristics: increased thickness of 6–10 µm, low gas and moisture permeability, and high biocidal activity against pathogenic bacteria and viruses. It is shown that the use of FGA technology in the production of table eggs can extend the period of transportation and storage of products by 33–35 days at a temperature of 24°C and maintained a grade A (Haugh unit = 71–60) through the entire 35 days period. The technology HGA reduces the rate of contamination of hatching eggs with pathogenic microflora by 99.29–99.7%, while increasing the egg hatching rate by 2.3–11.6% compared to the control, depending on the cross of the poultry and the storage conditions of the hatching eggs. It is important that these technologies have a great prospect for application in countries that develop green technologies for the production of poultry products.
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Ismi, Suko. "EGGS PRODUCTION OF GROUPER HYBRID FOR SUPPORTING HATCHERY BUSINESS". Jurnal Ilmu dan Teknologi Kelautan Tropis 9, n. 2 (2 gennaio 2018): 783–94. http://dx.doi.org/10.29244/jitkt.v9i2.19310.
Testo completoAbstract (sommario):
The grouper hatchery now has been widely developed, usually purchased eggs from the business that produces hybrid grouper eggs in accordance with the amount as needed. Eggs grouper that is currently in demand are eggs grouper cantang that is a cross-breed between female tiger grouper (Epinephelus fuscoguttatus) and male giant grouper (Epinephelus lanceolatus) and cantik that is a cross-breed between female tiger grouper and male grouper batik (Epinephelus Microdon). The purpose of this research is to get information about hybrid egg production activities, marketing and economics. The study was conducted in Buleleng regency in January-December 2015, data was taken from five hatchery or business that produces only hybrid grouper egg that is one business (A) in the village of Banyuasri, Buleleng district; Three businesses (B); (C) and (D) in the village of Penyabangan, Gerokgak district and the effort (E) in the village of Banyupoh, Gerokgak district, the data were analyzed descriptively. The results of the five businesses may produce as many eggs as five to eight times a year by the amount that can be marketed 24,200,000 - 44,500,000 eggs. The result of business analysis R / C ratio > 1 which means the business is profitable. Keyword: eggs, hatchery, hybrid, production, support
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Kryvenok, Мykola, e Мarina Rudenko. "Marketing of organic eggs in Ukraine". Problems of Innovation and Investment Development, n. 20 (novembre 2019): 113–18. http://dx.doi.org/10.33813/2224-1213.20.2019.11.
Testo completoAbstract (sommario):
The subject of research is a set of organizational and economic measuresundertaken by the enterprises for the production of organic food eggs for theeffective promotion of their products on the market of Ukraine and beyond. Thepurpose of this article is to analyze and determine the peculiarities of the marketingcomplex of enterprises producing food eggs and a separate segment of this market -organic eggs. Methodology of work - methods of theoretical generalization andcomparison, economic analysis, structural-logical method and method of graphicalinterpretation. The results of the work - a system of methods and tools forincreasing the efficiency of utilization and development of the potential of theenterprises for the production of organic eggs for qualitative promotion of theirproducts on the market. Conclusions-analysis of the efficiency of utilization ofthe potential of organic food egg production enterprises will allow to identify theirunused reserves, as well as to offer methods, tools and directions for solving thestrategic development problems of these enterprises in promoting their own productson the market.
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Burova, D., e M. Trubitsyn. "SPF egg production: current status and challenges". IOP Conference Series: Earth and Environmental Science 937, n. 3 (1 dicembre 2021): 032028. http://dx.doi.org/10.1088/1755-1315/937/3/032028.
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Abstract The paper discusses the technology for the production of SPF eggs, i.e. specific pathogen free eggs, used in the manufacture of vaccines for veterinary use. Nowadays, such an egg is imported in the Russian Federation only from abroad, which indicates the dependence of the vaccine market on imports, as well as on the epidemiological situation in the supplying country. At the same time, the process of creating an enterprise for the production of SPF eggs is extremely laborious due to the increased requirements for the technological processes of keeping and growing poultry, as well as the high risks of accidental contamination of the livestock. Due to the fact that today one of the priority tasks is import substitution, the creation of Russia’s own production of SPF eggs is a strategically important task for the near future.
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Marelli, Stefano Paolo, Manuela Madeddu, Maria Grazia Mangiagalli, Silvia Cerolini e Luisa Zaniboni. "Egg Production Systems, Open Space Allowance and Their Effects on Physical Parameters and Fatty Acid Profile in Commercial Eggs". Animals 11, n. 2 (21 gennaio 2021): 265. http://dx.doi.org/10.3390/ani11020265.
Testo completoAbstract (sommario):
Food function is nowadays not merely limited to nourishment supplying; consumers’ interest is oriented to food healthiness and nutritional value, animal welfare, environmental impact of animal productions, and products’ traceability. The objective of the present work is to compare physical parameters and fatty acids profiles of market eggs produced from hens housed in four different systems. In addition, the effects of the presence of an outdoor space allowance (IND = no outdoor space allowance, OUT = outdoor space allowance) on the same parameters have been investigated. Sixty-nine market eggs from four different production systems labelled as Alternative (ALT), Enriched Cage (ECA), Litter Floor (LIF), and Organic (ORG) have been analysed. Physical parameters and fatty acid concentrations were measured. An ANOVA analysis was performed with production system and outdoor space allowance as sources of variation, two Principal Component Analyses (PCA) were carried out with physical parameters and fatty acid parameters as variables. The effects of the complex interactions occurring among production system, hen welfare, and eggs quality have been analysed in marketed eggs leading to the conclusion that eggs from different production systems available on the market are characterized by differences in fatty acid profile and physical parameters. In physical parameters the differences among systems were influenced by the whole egg weight, albumen weight and yolk weight. In fatty acids parameters the determining variables are the content in polyunsatured fatty acids (PUFA), linoleic acid concentration, and n6/n3 ratio.
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Whiley, Harriet, e Kirstin Ross. "Salmonella and Eggs: From Production to Plate". International Journal of Environmental Research and Public Health 12, n. 3 (26 febbraio 2015): 2543–56. http://dx.doi.org/10.3390/ijerph120302543.
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黄, 炜乾. "Dietary Nutritional Manipulation on Designer Eggs Production". Hans Journal of Food and Nutrition Science 09, n. 04 (2020): 288–95. http://dx.doi.org/10.12677/hjfns.2020.94038.
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Skrbic, Z., Z. Pavlovski, M. Lukic, D. Vitorovic, V. Petricevi e Lj Stojanovic. "Changes of egg quality properties with the age of layer hens in traditional and conventional production". Biotehnologija u stocarstvu 27, n. 3 (2011): 659–67. http://dx.doi.org/10.2298/bah1103659s.
Testo completoAbstract (sommario):
The upcoming ban on cage rearing system, ecological aspects of production, perception of better quality and biological safety of products from less intensive systems are reasons in favour of alternative (non-conventional) systems of production of table eggs. Considering only few studies have dealt with quality properties of eggs obtained from autochthonous breeds and changes during production cycle, objective of this study was to define these changes and determine the degree of correlation between the age of layer hens of Banat Naked-Neck breed and quality of eggs in traditional production in relation to conventional, traditional production of light line hybrid of layers in cage system. Results of the study showed poorer quality of eggs from traditional production but certain properties (egg mass, egg shell mass), thanks to strong positive correlation to age of layer hens, were significantly improved, i.e. no decrease with the age of layers was determined, contrary to eggs from conventional production.
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Tamini, Lota D., Maurice Doyon e Micheline M. Zan. "Investment behavior of Canada egg producers". British Food Journal 120, n. 1 (2 gennaio 2018): 96–107. http://dx.doi.org/10.1108/bfj-12-2016-0619.
Testo completoAbstract (sommario):
Purpose The purpose of this paper is to document the level of risk in the Québec egg sector (conventional and specialty eggs) and analyze the optimal choices of Québec egg producers that must allocate limited resources to production of different types of eggs. Design/methodology/approach A quadratic programming approach applied to expected mean-variance models is used to analyze the impact of risk on decision to invest when the resources must be allocated to different type of production that have different risk levels. The model is calibrated using monthly data from 2009 to 2016. Findings Results indicated multiple uncertainty sources (technological, cost of production, price of eggs) that vary according to the types of eggs. Given risk aversion parameters, producer would favor production modes with the lowest producers’ price variance, which correspond to free-run eggs. Results also indicated that in response to a greater intensity of risk aversion, the course of action producers may choose is to increase the relative production of free-run eggs. Research limitations/implications The empirical limits of this research are found in the lack of quality data on producer prices and costs for specialty eggs. Future research could explore the relationship between the growing impact of egg for processing, which price is based on the US price, and its relationship with specialty eggs. Practical implications The findings of the study will be useful for policy makers and managers of eggs supply chain. This is important, given the recent announcement by Canadian’s large retailers and fast food companies to increase cage free eggs offering and, in some cases, eventually only selling these types of eggs. Originality/value This study adds to the understanding of the role of risk and uncertainty in the investment decision of egg producers and different mode of production, as well as in the development of the growing production of specialty eggs in Canada. It fills a gap in the literature regarding the impact of risk in Canadian egg production. This gap is likely explained by the perception of a lack of risk in this supply managed sector in Canada and its small size relative to other supply managed sector.
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Akkoyun, Fatih, Adem Ozcelik, Ibrahim Arpaci, Ali Erçetin e Sinan Gucluer. "A Multi-Flow Production Line for Sorting of Eggs Using Image Processing". Sensors 23, n. 1 (23 dicembre 2022): 117. http://dx.doi.org/10.3390/s23010117.
Testo completoAbstract (sommario):
In egg production facilities, the classification of eggs is carried out either manually or by using sophisticated systems such as load cells. However, there is a need for the classification of eggs to be carried out with faster and cheaper methods. In the agri-food industry, the use of image processing technology is continuously increasing due to the data processing speed and cost-effective solutions. In this study, an image processing approach was used to classify chicken eggs on an industrial roller conveyor line in real-time. A color camera was used to acquire images in an illumination cabinet on a motorized roller conveyor while eggs are moving on the movement halls. The system successfully operated for the grading of eggs in the industrial multi-flow production line in real-time. There were significant correlations among measured weights of the eggs after image processing. The coefficient of linear correlation (R2) between measured and actual weights was 0.95.
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Peric, L., N. Milosevic, N. Tolimir e D. Zikic. "Results of egg production in different housing systems". Biotehnologija u stocarstvu 23, n. 5-6-1 (2007): 497–502. http://dx.doi.org/10.2298/bah0701497p.
Testo completoAbstract (sommario):
The aim of this work was to present the production results of laying hens kept in different housing systems - conventional cages with different stocking densities, enriched cages or in houses with a range. The used hybrid was Shaver 579 (564 birds). The main production parameters were monitored: No. of laid eggs, laying percentage, mortality rate, feed intake, egg weight and number of culled eggs. Data were analyzed by ANOVA followed by t-test. Main production parameters in production of table eggs were significantly different depending on the housing system. The best results were realized in cage system with lower housing density, and the worst results in hens housed in floor system on free range.
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Brown, E. D., D. W. Macdonald, T. E. Tew e I. A. Todd. "Rhythmicity of egg production by Heligmosomoides polygyrus in wild wood mice, Apodemus sylvaticus". Journal of Helminthology 68, n. 2 (giugno 1994): 105–8. http://dx.doi.org/10.1017/s0022149x00013602.
Testo completoAbstract (sommario):
AbstractThe rhythmicity of egg production by Heligmosomoides polygyrus (Nematoda) in wild caught wood mice (Apodemus sylvaticus) was studied. Faecal production followed a 24 h cycle, with peaks at 0400 h and troughs at 1300–1900 h. The patterns in eggs per gram of faeces (EPG) and total eggs were similar to each other, though the former was more accentuated. Both of these followed a 24 h cycle, with peaks coinciding with troughs in faecal production and vice versa. Faecal weight was inversely correlated with EPG, but was not significantly correlated with total eggs. The pattern in EPG presumably reflected the effect of faecal production on the total eggs excreted in each 3 h period. The observed cycle in total eggs probably describes the pattern of egg production by the worm, although other factors, such as the host's intestinal rhythms, may contribute to this cycle.
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Heatubun, Adolf, Michel J. Matatula, Marcus Veerman e Heriyanus Jesayas. "KUALIFIKASI MANAJERIAL TEKNIS PRODUKSI TELUR PERUSAHAAN UD. FITRA ABADI, KECAMATAN LEIHITU, KABUPATEN MALUKU TENGAH". Agrinimal Jurnal Ilmu Ternak dan Tanaman 7, n. 1 (30 aprile 2019): 34–41. http://dx.doi.org/10.30598/ajitt.2019.7.1.34-41.
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The technical managerial ability to produce eggs from farmers and farm company managers is an indicator of how well businesses organize successful production and business activities. This study aims to determine the technical indicators of production efficiency in the laying hens company UD. Fitra Abadi. The study used a survey method, the location was selected purposively, and the study lasted 31 days in October 2018. The sample used was one cage block with 2,100 hens laying hens. The results showed the laying hens, UD. Fitra Abadi applies a technology package that is lower in capacity by mixing shop food (35%), corn feed (45%), and bran feed (20%). Egg production produced an average of 1,738 eggs per day (82.76% of 2,100 chickens) is below the best capacity of the peak egg-laying period of 95%. Technical indicators of production show the average production of eggs per kg of food 6.43 eggs, marginal production of -0.3 eggs, and elasticity of -0.047. The efficiency of the company's production becomes negative, and the company operates in a loss phase.
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Maćkowiak-Dryka, Monika, Krzysztof Szkucik e Renata Pyz-Łukasik. "Snail eggs as a raw material for the production of a caviar substitute". Journal of Veterinary Research 64, n. 4 (26 novembre 2020): 543–47. http://dx.doi.org/10.2478/jvetres-2020-0062.
Testo completoAbstract (sommario):
AbstractIntroductionSnail eggs can be the raw material for the production of a caviar substitute. The substitute varies from the original in caloric value and nutrient content which determine the nutritional value of every foodstuff. The present study aimed to determine and compare the nutritional value and protein quality of eggs from two subspecies of edible snail.Material and MethodsThe chemical composition of the snail eggs i.e. Cornu aspersum maxima and Cornu aspersum aspersum was determined in accordance with international standards. In order to evaluate the protein quality of the eggs of the two studied snail subspecies, the chemical score (CS), and a reference protein were used.ResultsSignificant differences in the content of water, ash, and carbohydrates, but comparable protein and fat contents and caloric values were found.ConclusionThe protein in the eggs of the snails was complete by the measure of the model adopted for this study, however, meeting the daily essential amino acid requirements of an adult would require an immense supply of both species’ eggs. Snail eggs of the Cornu genus were characterised by much lower nutritional value in comparison with caviar and caviar substitutes.
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Kim, Eun-Jib. "The Dietary Effects of Marigold Extracts on Egg Production, Egg Quality and the Production of Lutein Fortified Chicken Eggs". Korean Journal of Poultry Science 41, n. 2 (30 giugno 2014): 135–42. http://dx.doi.org/10.5536/kjps.2014.41.2.135.
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Lyashuk e Novak. "PARASITES AS BIOLOGICAL RISK FACTORS IN FOOD PRODUCTION". THEORY AND PRACTICE OF PARASITIC DISEASE CONTROL, n. 20 (14 maggio 2019): 323–29. http://dx.doi.org/10.31016/978-5-9902340-8-6.2019.20.323-329.
Testo completoAbstract (sommario):
In the Ryazan region over the past 10 years there has been a tendency to increase the number of cases of parasitosis, which reached 26899 cases. Considering the specifics of parasites, it is necessary to regularly monitor information about biological risk factors in order to prevent or minimize the risk situation based on the collection and analysis of information on the morphophysiological characteristics of pathogens. Normative and technical documentation, medical statistics, scientific articles and manuals were studied as materials for the analysis. To biohelminthoses, peroral zoonoses, are echinococcosis (hydatid and alveolar), opisthorchiasis, fascioliasis and trichinosis. Geohelminthoses, oral anthroponoses, are Ascariasis and trichocephalesis. To geohelminthoses with percutaneous method of infestation (larvae penetrate through the skin or mucous membranes by contact with contaminated soil, water, aquatic plants), anthroponoses include strongyloidiasis. To the group of pathogenic helminths infections, oral anthroponoses are hymenolepiasis and enterobiasis. High sensitivity to physical influences typical of eggs Hymenolepis nana, tissue stages of Toxoplasma gondii; the average for eggs and larvae of Strongyloides stercoralis, Enterobius vermicularis eggs, plerocercoids of tapeworms of the genus Diphyllobothrium; low – for cysts Entamoeba histolytica and Lamblia intestinalis, metacercarial Opisthorchis spp. and helminth eggs of the subfamily Echinococcinae, Trichocephalus trichiuris, Ascaris lumbricoides, Fasciola spp., oocysts of Toxoplasma gondii; very low – for oocysts Cryptosporidium parvum, larvae of helminths of Trichinella, eggs Taeniarhynchus saginatus and Taenia solium. To ensure food safety, it is necessary to analyze not only the biological risks that cause human diseases, but also veterinary, raw materials, technological and risks that arise at the stages of production and sale of finished products.
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Harahap, Nurainun, Melia Afnida Santi e Fira Faradillah. "Processing of Salted Eggs of various flavors with Optimization of Duck Egg Production in Mompang Village". Journal of Saintech Transfer 1, n. 2 (8 aprile 2019): 151–55. http://dx.doi.org/10.32734/jst.v1i2.853.
Testo completoAbstract (sommario):
The community service was conducted in Mompang Village, Padangsidimpuan District, Angkola Julu. This ac tivity aims to increase public knowledge and produce innovations in the processing of poultry production. Eggs are one of the livestock products that are easily damaged in storage and have a fishy taste, especially duck eggs. The used of natural salt and spices can produce salted eggs with a variety of aromas such as soto flavor, rendang and spicy so as to reduce fishy smell and increase egg retention. This activity was held on July 15, 2018 which was attended by 22 participants. The method used was the socialization and demonstration of making various salted roasted eggs. Based on the results of organoleptic testing, making various salted eggs is quite good to reduce the fishy flavor contained in duck eggs so that it can increase the amount of consumption, with this activity can increase public knowledge about processing livestock products.
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Golub, G., O. Marus e V. Chuba. "Parameters of Pneumatic Calibrator of Grain Moth Eggs for Trichogramma Production". Scientia Agriculturae Bohemica 50, n. 2 (1 giugno 2019): 117–26. http://dx.doi.org/10.2478/sab-2019-0017.
Testo completoAbstract (sommario):
Abstract The aim of the work is to increase the efficiency of the biotechnological process of Trichogramma production by improving the pneumatic calibrator of grain moth eggs. The trajectory of grain moth eggs movement in horizontal air flow of the pneumatic calibrator, taking into account the equivalent diameter, as well as the initial velocity, is determined. The size and location of containers, height of the separation chamber and valve, and air flow velocity in the calibrator are substantiated. The obtained analytical dependencies allow us to determine the height of vertical channel of the stabilizing nozzle depending on the initial conditions of movement and the equivalent diameter of an egg. The hovering rate of grain moth eggs and conglomerates (depending on the number of eggs in them) is experimentally determined. Optimal values of the structural and technological parameters of the improved pneumatic calibrator (air flow velocity 3.8 m s−1, height of separation chamber 198–199 mm, valve height 26–27 mm) are determined on the basis of the experimental design planning methodology. The probability of selecting large eggs is increasing by 31%.
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Pham, Thuy Linh, Quy Khiem Nguyen, Dinh Tu Dang, Trong Thien Nguyen, Ngoc Tan Le, Thi Bich Loan Dao, Quoc Dung Vu, Van Hung Le, Thi Thu Hien Nguyen e Duy Trang Nguyen. "Assessment of production capacity of three combinations of hybrid chickens". Ministry of Science and Technology, Vietnam 63, n. 5 (31 maggio 2021): 46–50. http://dx.doi.org/10.31276/vjst.63(5).46-50.
Testo completoAbstract (sommario):
The research was conducted at the Pho Yen Chicken Research Station, Thuy Phuong Poultry Research Center, from January 2019 to August 2020 to evaluate the productive ability of the combinations of hybrid parent hens (♂TN1 x ♀TN2, ♂TN1 x ♀TN3, ♂TN1 x ♀TN32) and commercial chicken TN12, TN13, TN132. The results achieved: 3 parent hen hybrid combinations (♂TN1 x ♀TN2, ♂TN1 x ♀TN3, ♂TN1 x ♀TN32) have the egg yield/hen/68 weeks of age and feed consumption/10 eggs are 191.74 eggs and 2.30 kg; 196.32 eggs and 2.27 kg; 198.78 eggs and 2.25 kg respectively. The rate of embryo reaches 97.43, 97.07, and 97.67%. The commercial chickens TN12, TN13, TN132 have the body weight at 8 weeks of age and feed consumption/kg body weight gain are 2440.07 and 2.29 kg; 2360.12 and 2.26 kg; and 2407.15 g and 2.22 kg respectively.
30
Suryana, Suryana, e Dadang Sukandar. "Forecasting of Production and Requirements Broiler Chicken Eggs for Consumption Animal Protein in Aceh Province". Jurnal Ilmiah Kesehatan (JIKA) 4, n. 3 (31 dicembre 2022): 364–73. http://dx.doi.org/10.36590/jika.v4i3.368.
Testo completoAbstract (sommario):
Nationally, production of broiler eggs chicken continues to increase, however production of broiler eggs chicken in Aceh Province is still low to meet the needs of the people. This study aimed to analyze the forecasting of egg production and demand for broiler chickens in Aceh Province as a source of animal protein contribution. The study was conducted in Aceh Province, which consists of 23 districts/cities. This study used descriptive quantitative methods in narrating a series of time series results obtained from secondary data. A forecasting analysis was carried out on the population, production and egg needs of purebred chickens in Aceh Province for a period of 3 years (2022-2024). There was tendency to decrease from forecasting results (2022, 2023, 2024) on the egg production of purebred chickens in Aceh Province. The egg production of broiler chickens was below the average production value in previous years, which was 8649.0 tons/year. There was a tendency to increase the demand for purebred chicken eggs from 31,008 tons per year to 32,083 tons/year for 2022 to 2024. Based on forecasting results on production and population needs for purebred chicken eggs in Aceh Province, it is not sufficient for the consumption of chicken eggs as a contribution to meet the needs of animal protein.
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Pawlewicz, Adam. "Change of Price Premiums Trend for Organic Food Products: The Example of the Polish Egg Market". Agriculture 10, n. 2 (1 febbraio 2020): 35. http://dx.doi.org/10.3390/agriculture10020035.
Testo completoAbstract (sommario):
One of the most rapidly growing areas of the organic agricultural system is egg production. However, the price premium often decreases the affordability of organic foods. In this study, the production and sales of organic eggs in Europe were compared, the prices of organic and conventional eggs in Poland were analyzed, and the price premium on the Polish market was evaluated. This study relied on data of Eurostat, Statistics Poland, Agricultural and Food Quality Inspection and Ministry of Agriculture and Rural Development in Poland. The prices of organic and conventional eggs on the Polish wholesale market were analyzed based on the monthly price registers. The production and sales of organic eggs in Europe were characterized by a steady increase. The nominal and real prices of organic eggs were higher than the prices of conventional eggs throughout the entire analyzed period. The nominal prices of organic eggs tended to decrease. However, an upward trend was observed in the real prices of both organic and conventional eggs. The average price premium for organic eggs exceeded 128% (median of 121%). The price premium was characterized by moderate variation (Vc = 33%). In Poland, the price premium was on a downward trend by around 1% per month in the examined period.
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Yamasaki, Shigehisa, e Hiroyuki Uchiyama. "Neonate production potential of Moina macrocopa females hatched from parthenogenetic eggs and resting eggs". Fisheries Science 67, n. 4 (agosto 2001): 758–60. http://dx.doi.org/10.1046/j.1444-2906.2001.00318.x.
Testo completo
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Wipf, Matthew M., Michael E. Barnes, Patrick A. Nero e Jill Voorhees. "Landlocked Fall Chinook Salmon Egg Survival during Jar and Tray Incubation at a Production Hatchery". Open Fish Science Journal 7, n. 1 (4 aprile 2014): 29–31. http://dx.doi.org/10.2174/1874401x01407010029.
Testo completoAbstract (sommario):
This study compared the survival of landlocked fall Chinook salmon Oncorhynchus tshawytscha eggs incubated in either upwelling jars, either with or without daily formalin treatments, or vertically-stacked trays treated daily with formalin in a production hatchery. In the first year of the study, survival to the eyed-egg stage was significantly greater in eggs incubated in jars without formalin compared to trays, but there was no significant difference in survival to hatch between the treatments. In the second year, there were no significant differences in eggs incubated in trays, in jars without formalin treatments, and in jars with formalin treatments. In the final year, there was no significant difference in eyed-egg survival between eggs incubated in trays and jars without formalin, but survival to hatch was significantly greater in the eggs incubated in jars. Jar incubation is recommended to maximize the survival of landlocked fall Chinook salmon eggs.
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WEDEKIND, C., D. STRAHM e L. SCHÄRER. "Evidence for strategic egg production in a hermaphroditic cestode". Parasitology 117, n. 4 (ottobre 1998): 373–82. http://dx.doi.org/10.1017/s0031182098003114.
Testo completoAbstract (sommario):
The cestode Schistocephalus solidus is a simultaneous hermaphrodite that grows in 2 intermediate hosts and reproduces rapidly within a few days in the gut of a bird. Reproduction takes place by self- or cross-fertilization. Here, it was tested whether egg production differs between S. solidus that reproduce alone and those that are allowed to reproduce in pairs. Egg production in an in vitro system was found to depend on the cestodes' social situation. When kept alone, larger cestodes produced larger eggs. This was not so when kept in pairs – the difference between these 2 reproductive modes being highly significant in this respect. Further experiments revealed that, within the first 3 days, these hermaphrodites produced a larger total egg mass when kept alone than when kept in pairs. This was also reflected by the energy contents of the cestodes after this time-span: selfers had used up more energy than paired worms. Furthermore, S. solidus appeared to adjust its investment per egg depending on whether the offspring will be the result of self- or cross-fertilization. Selfers produced larger numbers of eggs, but these eggs were smaller and contained even smaller embryos per given egg size than eggs of potentially outbreeding cestodes. Selfed eggs reached lower hatching rates. Although this is to be expected from inbreeding depression it may also be an effect of the reduced maternal investment per egg. The observed phenotypic plasticity in the reproduction of S. solidus is discussed within 4 evolutionary frameworks: local mate competition adjusted for hermaphrodites, the hermaphrodite's dilemma, bet-hedging, and sib-competition.
35
Skrbic, Zdenka, Z. Pavlovski, S. Mitrovic, M. Lukic e D. Tomasevic. "Variability of certain table egg quality traits depending on the producer and investigation year". Biotehnologija u stocarstvu 22, n. 5-6 (2006): 21–31. http://dx.doi.org/10.2298/bah0606021s.
Testo completoAbstract (sommario):
Interest of consumers in safety and quality of table eggs is increasing. Considering the deficit/lack of eggs from alternative systems, as well as increased production cost and other (zoo-hygienic) problems in these systems, it is necessary to improve egg quality traits in intensive production conditions. In Serbia, numerous mini farmers are main suppliers of table eggs on the market, therefore there is the issue of subjective factor, i.e. producer on the quality of egg. At the same time, objective of the paper was to investigate the changes of the egg quality traits depending on the year of investigation. During three production cycles, on five farms for production of table eggs with Isabrown layers, following quality traits were investigated: egg mass, albumen height, Haugh units, yolk color, egg shell color, cleanliness and thickness. Investigation results indicated significant effect of investigation years, i.e. production cycles on quality of table eggs, based on main flocks of same light layer hen hybrid, as well as quality of feeds used for their nutrition. Also, results indicated the possibility for improvement of egg quality even in conditions of intensive production and that this improvement greatly depends on the awareness of the producer about the importance of the correct realization of production technology.
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Sarıca, Musa, Kadir Erensoy e Ayşe İpek Özsoy. "Fertility of Uncontrolled Village Flock Eggs and Comparison of Quality Traits of Table-Eggs Produced in Different Production Systems". Turkish Journal of Agriculture - Food Science and Technology 9, n. 2 (23 febbraio 2021): 356–61. http://dx.doi.org/10.24925/turjaf.v9i2.356-361.4004.
Testo completoAbstract (sommario):
In this study, the eggs produced in uncontrolled village conditions were compared to free-range, organic and cage-system in two seasons, in autumn and spring, in terms of external and internal quality traits. In the autumn and spring period, 110 eggs were collected from the village eggs and 50 eggs from other production systems. In order to determine the fertility in the village eggs, 60 eggs were placed in a laboratory type incubator in both seasons and fertility control was made at the 18th day. All data of egg quality traits were performed by taking the average of the two seasons. Egg shape index, shell ratio, shell thickness, shell cleanness, shell defects, albumen and yolk traits differed significantly among production systems (P < 0.05). The lowest shape index, shell thickness and shell cleanness were found in village eggs. Higher shell rates were determined from eggs in cage and organic production compared to others (P < 0.05). The yolk height and yolk index were the lowest and the yolk colors were the darkest in the white cage eggs (P < 0.05). Brown cage eggs showed the better results in the majority of their quality traits. However, they had a higher meat and blood-spot level than other systems. In addition, the presence of cockerels in the village flocks caused the fertile eggs and approximately 85% fertility was obtained. Our results showed that it has become obvious that the village hen and free range hen eggs which can be marketed in high prices compared to the commercial eggs, have no superiority in terms of the traits they are considered. Besides, as they are significantly fertile, especially in hot summer months, according to storage duration and conditions, the probability of embryo development for these eggs has turned to be of high importance for consumption.
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Park, S. W., H. Namkung, H. J. Ahn e I. K. Paik. "Production of Iron Enriched Eggs of Laying Hens". Asian-Australasian Journal of Animal Sciences 17, n. 12 (1 gennaio 2004): 1725–28. http://dx.doi.org/10.5713/ajas.2004.1725.
Testo completo
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Suzuki, Yoshio, e Masayuki Okamoto. "Production of hen's eggs rich in vitamin K". Nutrition Research 17, n. 10 (ottobre 1997): 1607–15. http://dx.doi.org/10.1016/s0271-5317(97)00155-3.
Testo completo
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Salamon, Attila. "Factors affecting the production of double-yolked eggs". World's Poultry Science Journal 76, n. 4 (1 ottobre 2020): 815–26. http://dx.doi.org/10.1080/00439339.2020.1830011.
Testo completo
40
Mierliță, D. "Fatty acid profile and oxidative stability of egg yolks from hens under different production systems". South African Journal of Animal Science 50, n. 2 (30 giugno 2020): 196–206. http://dx.doi.org/10.4314/sajas.v50i2.3.
Testo completoAbstract (sommario):
AbstractThis study was carried out to compare the egg quality, fatty acid (FA) profiles, and oxidative stability of yolks from hens maintained in cages and fed a conventional diet (CON), those fed a conventional diet with free access to outdoor grassy area (5 m2/hens) under free-range conditions (FR), and those fed an organic diet and free access to outdoor grassy area (10 m2/hens) under in organic system (ORG). Heavier eggs were produced by CON, while percentages of yolk and eggshell were greater in eggs of FR and ORG hens. The FR and ORG hens produced eggs that contained significantly more monounsaturated fatty acids (MUFAs) but less polyunsaturated fatty acids (PUFAs) than CON hens. Eggs from FR and ORG hens had a lower concentration of PUFA n-6 because of less C18:2 n-6 (linoleic acid) and a higher percentage of PUFA n-3 (eicosapentaenoic acid). Consequently, the ratio of PUFA n-6 to n-3 for eggs from FR and ORG hens was healthier for consumers compared with CON. However, eggs from the ORG hens had a similar FA profile to those from the FR hens. No significant differences were noted in hypocholesterolaemic (HI), atherogenic (AI) and thrombogenic indexes. Antioxidant concentration was greatest in eggs from ORG hens (retinol-14.32 μg/g and α-tocopherol-98.7 μg/g/yolk). Thus, the oxidative stability of eggs measured after storage at 4°Cfor 15 or 30 days was improved. The best eggs in terms of nutritional value were from the ORG system in which hens lived in their natural environment.
Keywords: antioxidants, conventional production, egg quality, free range production, malonaldehyde, organic production
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Pankova, S., e O. Katerinich. "Efficiency of using the new domestic meat-egg hybrid for the production of food eggs in household farms". Agricultural Science and Practice 4, n. 2 (15 luglio 2017): 47–51. http://dx.doi.org/10.15407/agrisp4.02.047.
Testo completoAbstract (sommario):
Aim. A detailed analysis of the egg production and economic effi ciency of using a new dual-purpose hybrid in a comparative aspect with the original forms. Methods. Standard zootechnical methods of estimating body weight, egg production and its intensity, egg weight, feed costs and livability of adult hybrid and purebred hens were used. The effects of heterosis on the main utility indicators and the European profi t ratio IOFC (Income Over Feed Cost), which displays the difference between the revenue from one layer and the cost of consumed food, was estimated. Results. Almost all studied indicators demonstrated the advantage of the hybrid over the original forms. The phenomenon of heterosis was observed in most studied indices – 5.7 % by precocity, 3– 7 % by mass of eggs, 12–14 % by egg production. Early puberty (on 2–16 days), more intensive build-up of egg production (by 3.3–4.2 %), improvement of its medium intensity by 4.6–9.8 % provided by hybrid laying hens per year of life which were 9–20 eggs superior than the origin forms. Due to the high productivity and low feed consumption per 10 eggs (2.1 kg versus 2.8 kg for the paternal form), the profi t ratio IOFC was also 28.7– 29.1 % higher for a hybrid. This indicates the expediency of using layers of a new hybrid combination for the production of food eggs in farming and household farms. Conclusions. The obtained zootechnical and eco- nomic indicators demonstrate the expediency of using layers of a new hybrid combination for the production of food eggs in farming and household farms.
42
Wang, C. L., e F. Thomas. "Egg production by metacercariae of Microphallus papillorobustus: a reproductive insurance?" Journal of Helminthology 76, n. 3 (settembre 2002): 279–81. http://dx.doi.org/10.1079/joh2002115.
Testo completoAbstract (sommario):
AbstractThis study aimed to determine whether metacercariae of Microphallus papillorobustus (Trematoda: Microphallidae) produce eggs by self-fertilization when their intermediate host, the gammarid Gammarus insensibilis, dies before being eaten by predatory definitive hosts. Such a mechanism would allow the parasite to reproduce even if transmission fails. The percentage of metacercariae that produced eggs and the mean number of eggs were significantly higher in metacercariae placed in a Ringer's solution compared with those in salt water or metacercariae remaining inside the dead gammarid. The lack of egg production in metacercariae removed from dead gammarids in the field supported the idea that self-fertilization is not, for this parasite, a mechanism of reproductive insurance when establishment in the definitive hosts fails.
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Prokudina, N. O. "Etiology analysis of broiler chickens femoral head necrosis in industrial production". Sučasne ptahìvnictvo, n. 3-4 (16 aprile 2020): 25–31. http://dx.doi.org/10.31548/poultry2020.03-04.025.
Testo completoAbstract (sommario):
Currently, increasing loads on birds bodies with intensive metabolism, adverse environmental factors, immunobiological adjustment during vaccinations leads to decreasing of nonspecific organism resistance and development of immunosuppressive states in the process of cultivation. Femoral head necrosis is a fairly common broiler disease. The causes of this disease can be both infectious and non-infectious. These factors often act as a complex of syndromes which starts with adversely affect on the individual in the hatchery egg, continues to affect during embryogenesis and has a negative effect during culturing. The purpose of the study was to determine the factors that cause broilers' necrosis of the femoral heads in industrial conditions. For this purpose, four batches of meat-type chickens eggs (in control trays) were examined in the poultry farm. Two batches of eggs were imported from abroad, and two were obtained from chickens of their own parent flock at 34 and 62 weeks of age. The conditions and shelf-life of hatching eggs in the farm met all the recommended parameters. The autopsy of incubation refuses after the first translucence of eggs from the chickens of their own parent flock indicated a weak thin shell. Further analysis and autopsy of incubation refuses identified problems with hatching eggs, which can be a provocative factor for current broilers disease. Postmortem examination of incubation refuses revealed the presence in all the batches of examined eggs a significant number of samples affected by opportunistic pathogenic microflora, particularly Escherichia coli microorganisms. Bacteriological impression occurred on different stages of embryogenesis and in different degrees of manifestation, pointing to both different sources of infection and the severity of the pathological process
44
Arifin, Hastuti. "ANALYSIS ON DIFFERENT PHASES CYCLE IN PRODUCTION OF LAYING HENS". Chalaza Journal of Animal Husbandry 1, n. 2 (10 dicembre 2016): 36–41. http://dx.doi.org/10.31327/chalaza.v1i2.185.
Testo completoAbstract (sommario):
This study aims to determine the productivity of the eggs produced in each phase of production of laying hens. The research was conducted in the village Bende Wundulako District of Kolaka that lasted approximately one month i.e. October to November 2011. The number of chickens is kept as many as 1,577 animals, strain CP 909. The productivity of egg laying hens is very different. Where in each cycle has increased from the initial production to experience the peak of production, which then slowly decreased. Daily egg production (hen-day production) at an early stage about 18.11%, 87.45% and the peak production of the final phase of 44.75%. While the percentage of egg production average weekly Phase I (17.45%), phase 2 (87.09%) and phase 3 (45.20%), for the production of eggs early (Hen-Housed Production EEG) the initial stage 18, 03%, peak production of 89.84% and 32.17% reject rate. Ties The result shows that the peak of egg production is high both in the production of eggs daily, weekly or early egg production Hen-Housed EEG) average is above 80%. So, it can be concluded that the productivity of egg laying hens are very different. Where in each cycle has increased from the initial production to experience the peak of production, on the cusp of production the number of eggs that produced very high
45
McGarvey, Richard, Mike A. Steer, Janet M. Matthews e Tim M. Ward. "A stage-based estimator of daily egg production". ICES Journal of Marine Science 75, n. 5 (21 marzo 2018): 1638–46. http://dx.doi.org/10.1093/icesjms/fsy021.
Testo completoAbstract (sommario):
Abstract Snapper (Chrysophrys auratus) in South Australia spawn over a wide range of daily times and hatch in ∼1.5 d. Traditional estimates of daily egg production (i) divide sampled eggs into daily age cohorts, e.g. days 1 and 2, (ii) compute cohort ages by assuming that all spawning occurs at a fixed daily peak hour, and (iii) link the estimation of spawning egg density with egg mortality rate by regressing cohort egg densities against cohort age. We propose a method for estimating daily egg production, the number of eggs spawned per unit area per day (P0), without these assumptions. We use a range of estimates of snapper egg mortality rate obtained from prior studies to backcorrect for egg mortality to the age 0 spawning egg density for each stage of eggs individually rather than aggregating into daily cohorts. P0 is estimated as a mean of sample tow densities rather than as a regression intercept. This stage-based P0 estimator avoids errors associated with assuming a fixed daily spawning hour and classifying eggs into day 1 or 2. It requires no regressions of sampled daily cohort egg densities against age, which often provide imprecise estimates of mortality rates. Simulation testing showed 1–2% accuracy for this estimator of P0. The uncertainty of assuming egg mortality rates is moderated by the insensitivity of estimates of P0 to the input value of egg mortality rate.
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Kralik, Zlata, Gordana Kralik, Manuela Grčević, Danica Hanžek e Ewa Biazik. "Designer Eggs with an Increased Content of Omega-3 fatty Acids and Pigments — Production and Health Benefits of their Consumption". Poljoprivreda 27, n. 2 (22 dicembre 2021): 67–74. http://dx.doi.org/10.18047/poljo.27.2.9.
Testo completoAbstract (sommario):
Designed-enriched products have been recently one of the most interesting areas of research and innovation in the animal production and food industry. These products are considered functional foods and contain ingredients that have beneficial physiological effects on human health. Designed or enriched eggs are an important type of functional food in poultry production. Demand for functional foods in the market has been increasing in recent years. Due to the increased interest of people in buying designed products, there is a production adjustment in the poultry industry. Composition change of laying hens feed affects nutritional composition change of eggs as well as their quality preservation. This process can an effect of the change in the concentration of cholesterol and its fractions, fatty acids, and pigments in eggs. It is evident from the relevant scientific literature that designer eggs consumption can have a positive effect on human health. Therefore, the aim of this paper is to describe different concepts of designer eggs production and emphasize the health benefits of their consumption in humans.
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Agus Suratman, Yan Yozef. "KAJIAN AGRIBISNIS KELAYAKAN PRODUK TELUR ASIN OMEGA 3 DI KABUPATEN HULU SUNGAI UTARA". ZIRAA'AH MAJALAH ILMIAH PERTANIAN 48, n. 1 (21 gennaio 2023): 33. http://dx.doi.org/10.31602/zmip.v48i1.8940.
Testo completoAbstract (sommario):
This study aims to determine technically the implementation in the business of making omega 3 salted eggs, to technically and economically determine the cost, income, and business feasibility of making omega 3 salted eggs in Sungai Pandan Hulu Village. Production process activities are carried out for 6 days starting from cleaning/selection of eggs to steaming and ready to be marketed. So there are 4 (four) production cycles. Using raw materials in the form of fresh duck eggs, while the auxiliary materials are coarse salt, ash/red brick powder, sufficient water, plus materials for steaming and packaging. The production capacity is 2,600 grains with a selling price of Rp. 3,200 / item. The total cost of production (TC) spent during the research period was Rp. 7,282,203.34. Total Revenue (TR) obtained during the research period is Rp. 8,320,000. The value of RCR (revenue cost ratio) is 1.1425. This means that RCR > 1, then the manufacture of omega 3 salted eggs in Sungai Pandan Hulu Village can be said to be profitable and feasible to cultivate
48
Dao, H. T., R. A. Swick, T. V. Nguyen, P. W. Hunt, B. C. Hine, L. Lisle e I. Ruhnke. "A comparison of eggshell mineral composition between cage and free-range eggs via inductively coupled plasma-optical emission spectrometry". Animal Production Science 60, n. 17 (2020): 2060. http://dx.doi.org/10.1071/an19705.
Testo completoAbstract (sommario):
Context In Australia and many other countries, free-range eggs can be sold at significantly higher prices than cage eggs. Mislabelling cage eggs as free-range eggs and vice versa has been documented, and has a significant impact on consumer trust and egg consumption. The development of methods to identify eggs produced from different production systems is necessary to satisfy consumer demand. Aims The objective of this study was to determine whether eggshell mineral composition could be used as a way to differentiate eggs originating from each production system. Our hypothesis was that birds with access to soil would have higher levels of trace minerals in shells. Methods Eggs were randomly collected from six commercial caged and six commercial free-range flocks in Australia. Twelve eggshell samples from each flock were analysed for mineral composition (Ca, P, Mg, Na, Al, B, Cu, Mn, Fe, K, S and Zn) by using inductively coupled plasma-optical emission spectrometry. Key results The results showed that free-range eggshells contained significantly higher contents of macro-minerals (P, Mg and Na) but lower contents of micro-minerals (Cu, Fe, K, S and Mn) than the cage eggshells (P < 0.05). For all minerals measured, a high variability was noted within and between production systems. Conclusions Analysis of eggshell mineral composition may not be effective for determining the origin of eggs. Implications Systematic studies of the bird’s environment, including analysis of mineral composition in diets, pastures, soil and drinking water are required for comprehensive evaluation of the influences of production systems of laying hens on mineral composition of eggs and eggshells.
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Habiburahman, R., S. Darwati, C. Sumantri e Rukmiasih. "Produksi Telur dan Kualitas Telur Ayam IPB D-1 G7 serta Pendugaan Nilai Ripitabilitasny". Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan 8, n. 2 (22 giugno 2020): 97–101. http://dx.doi.org/10.29244/jipthp.8.2.97-101.
Testo completoAbstract (sommario):
IPB-D1 is a chicken cross between male F1 PS (PelungxSentul) with F1 female (Kampung x parent stock cobb). The establishment of chicken IPB-D1 aims to produce commercial meat type local chicken with semi-intensive maintenance management. The aim of this research to observe study assesses the performance of egg production and the quality of IPB D-1 chicken eggs and estimates the value of repeatability of production and haugh units of IPB D-1 chicken eggs. The chicken was observed as many as 30 hens IPB D-1 G7 aged 24-36 weeks and eggs as many as 288 eggs. The production and egg quality data were analyzed descriptively and the repeatability values were analyzed with Anova. Egg weight 40 g, Haugh unit value 87 (Very good), egg production 49.22%. The repeatability value of egg production is 0.2 (Moderate) and the repeatability value of the haugh unit is 0.31 (Medium). IPB D-1 Chicken has the potential to be a good dual-purpose chicken.
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Hipfner, J. Mark, Anthony J. Gaston, Gene R. Herzberg, John T. Brosnan e Anne E. Storey. "Egg Composition in Relation to Female Age and Relaying: Constraints on Egg Production in Thick-Billed Murres (Uria Lomvia)". Auk 120, n. 3 (1 luglio 2003): 645–57. http://dx.doi.org/10.1093/auk/120.3.645.
Testo completoAbstract (sommario):
Abstract There is growing awareness that costs associated with egg production play a significant role in shaping avian life histories. The life-history strategy of the Thick-billed Murre (Uria lomvia), a colonial, cliff-breeding seabird of Arctic waters, is characterized by a high annual adult survival rate, deferred breeding, and laying of a single-egg clutch. The single-egg clutch is a widespread phenomenon among seabirds and is generally thought to reflect demands of chick provisioning, rather than egg production. We compared composition of eggs laid by Thick-billed Murres most likely to be physiologically constrained in their capacity to produce eggs (young females with no prior experience, and females forming replacement eggs) to that of first eggs laid by early laying females (typically older, more experienced members of the population). Young, inexperienced females laid 4–18 days past the populationwide median laying date, and their eggs averaged 13% lighter in mass than those laid by early layers. Compared to early laid eggs, shell mass on young females’ eggs was similar to that predicted from egg mass, but their eggs had a lower yolk-to-albumen ratio. There was little difference between the two groups in relative protein content of albumen, relative protein or lipid content of yolk, or amino acid makeup of protein in yolk or albumen. Replacement eggs averaged 6% lighter in mass than first eggs laid by the same females earlier that season. As with young females’ eggs, replacement eggs had shells similar in mass to that predicted from egg mass, but lower yolk-to-albumen ratios, when compared to early laid eggs. Both protein and lipid concentrations in yolk were similar in first and replacement eggs, but replacements were deficient in albumen protein. Amino acid makeup of protein in yolk and albumen was similar in the two groups. Those results suggest that any limitations on egg production acting on young, inexperienced females are manifested in delayed laying and reductions in overall egg mass and proportional yolk content, but not in variation in biochemical composition of their eggs. Limitations on females forming replacement eggs are manifested not only in reduced egg mass and yolk content (as with young females), but also in changes in the biochemical composition of eggs; in particular, evidence suggests that relaying females may face a deficit of endogenous protein. The existence of such limitations suggests that demands of egg production can be significant even in a species that lays a single-egg clutch.