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Poultry genetics and reproduction
Poultry breeding has been one of the most impactful advances in the last 100 years. The role that improved global production of eggs and poultry meat have in reducing global hunger and food insecurity is difficult to overstate. The vast majority of these improvements have come from genetic selection for improved feed efficiency, along with streamlining of the overall production system, and better understanding of poultry nutrition. While the industrial approach to poultry production has created a highly consistent and dependable food source the world over, several problems threaten the long term sustainability of this model - including musculoskeletal and metabolic disorders, welfare concerns, and the need to adapt to a changing climate. Researchers in poultry breeding and genetics utilize quantitative, population, and molecular genetic techniques to help understand the effects of selection for economically important traits and enhance genetic performance through changes in environment and management strategies.
The modern broiler breeder is more of a challenge to manage and feed than their predecessors.
The end user has demanded changes in the broiler that they will purchase that results in breeding companies putting pressure on various traits including but not limited to; growth rate, feed intake, breast meat yield and feed conversion ratio. Improved selection techniques and better analytical methods have resulted in significant...
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Introduction
Genetic selection programs have been the single most important contributor to the increase of efficiency of poultry and animal production around the globe. With pressure on food security building up through a growing and wealthier world population whilst resources are limited, once again the need for increased efficiency of animal production is paramount. New technologies derived from genomics are...
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Introduction
In the United Sates in the 1940’s, broiler industry breeding improvements included identifying lines showing maximum crossbred performance for broiler traits including fast growth rate (fewer days to market weight), rate of feathering and livability and also included selecting specialized meat type lines improved by progeny testing for degree of fleshing as mentioned in...
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Broiler breeder fertility is, somewhat indirectly, of utmost importance to the overall success of the poultry industry. Through many years of intense genetic selection and improved nutritional management, there has been a steady and rapid increase in the growth rate of broilers produced for the meat market. A natural result of this is that the present day breeders also have the propensity for extremely rapid growth which usually has detrimental effects on...
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Introduction
The primary poultry breeding industry is under a continuously concentration process and nowadays there are only a few breeding companies which supply the world market. With the worldwide distribution of stocks, the major poultry breeders have to breed commercial layers that perform adequately in a wide variety of systems, ranging from large-intensive cage units to free- range management under...
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Genomic selection is a truly revolutionary breeding technology that creates enormous potential for increase of genetic progress for egg laying traits in poultry and opens up new options for genetic improvement. ...
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Video about Genetic stock evaluation during laying period poultry. Monitoring of the growth and production characteristics of the commercial egg strains is vital to ensure that optimal performance can be achieved....
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Video about Genetic selection of broilers. Improvements in chickens related to broiler breeder production, efficiency of broiler growth, environmental improvements and enhanced poultry wellbeing are helping to promote a sustainable future for the world’s poultry industry....
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Introducción Quantitative genetic selection, using a weighted index of economically important traits, has been used by commercial breeders for over 60 years to improve the performance of egg-type stocks. That selection has been made primarily on BW, feed conversion (FC), egg number, egg size, various measurements of interior and exterior egg quality, and income over feed and chick cost. The genetic...
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Every once in a while you hear a story about a hen that changed into a cock. Such stories are often meet with skepticism, but sex reversals do, in fact, occur, although not very frequently. To date, however, spontaneous sex reversal from male to female has not been reported. In spontaneous sex reversal, only the phenotype 3 is altered. Genetically, the bird remains a female, but externally it appears male. Differences between the sexes ...
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Could experts help me in choosing a breed among lsl, buovan, bebcoc ,w98, or any other..as i want to establish an open house, floor stype shed of almost 7000 birds..plz aso give a prominent and competitive features of your suggestion..thanks ...
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ABSTRACT
Understanding gene expression, segregation and their inheritance from parent to offspring had been one of the major goals in developmental genetics because, determination of the superior parents and hybrid combinations before their use in breeding program is useful for a wide range of quantitative characteristics and suggested the contributions of different...
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Abstract At the moment, in Romania, there are three hybrids frequently used in poultry industry: Cobb 500, Ross 308 and Hubbard Flex. Basicly, these hybrids have similar productive characteristics and needs. Hybrid meat Cobb 500 has been designed so as to obtain higher performance with low costs. It is not choosey about nutritional requirements, so in terms of protein, start discussing about...
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Infertility: Male or Female Problem? It could be both. However, if an egg is laid, the "potential" fertility is always there. Males, may be or may become "impotent". Causes of Infertility: In females mostly due to over-feeding and obesity. In males mostly due to over-feeding and under-feeding. If a hen produces an egg, infertility may be due simply to absence of semen in...
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