Synthesis and parameters of new populations of meat-type chickens
作者： J. R. Chambers , D. E. Bernon , J. S. Gavora
DOI: 10.1007/BF00262532
关键词: Weight gain 、 Biotechnology 、 Genetic correlation 、 Feed conversion ratio 、 Crossbreed 、 Population 、 Abdominal fat 、 Biology 、 Sire 、 Broiler 、 Animal science
摘要: Sire and dam populations of meat-type chickens were developed at the Animal Research Centre, Ottawa to provide unselected control suitable for modern broiler research, estimate genetic parameters traits, initiate selection experiments. The synthesized from 16 commercial parent stocks (nine sire seven stocks) during two generations crossbreeding one generation random mating. estimated contribution per stock respective population ranged 8.3 16.7% autosomal genes, 5.5 17.8% genes on Z chromosomes, 0 25.0% W chromosomes. Genetic differences among original had not been fully diffused individuals within time estimated. Consequently, parameter estimates are probably slightly biased. Estimated heritabilities traits in these generally high, 0.39 0.63. Hence, rapid change is possible. correlation between 28 49 day feed efficiency corresponding weight gain was 0.69 abdominal fat percentage -0.68. Increasing body gain, improving reducing fatness broilers by appears feasible.
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