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Reliability of genomic evaluation for egg quality traits in layers.
BMC Genetics Pub Date : 2020-02-11 , DOI: 10.1186/s12863-020-0820-2
David Picard Druet 1 , Amandine Varenne 2 , Florian Herry 1, 2 , Frédéric Hérault 1 , Sophie Allais 1 , Thierry Burlot 2 , Pascale Le Roy 1
Affiliation  

BACKGROUND Genomic evaluation, based on the use of thousands of genetic markers in addition to pedigree and phenotype information, has become the standard evaluation methodology in dairy cattle breeding programmes over the past several years. Despite the many differences between dairy cattle breeding and poultry breeding, genomic selection seems very promising for the avian sector, and studies are currently being conducted to optimize avian selection schemes. In this optimization perspective, one of the key parameters is to properly predict the accuracy of genomic evaluation in pure line layers. RESULTS It was observed that genomic evaluation, whether performed on males or females, always proved more accurate than genetic evaluation. The gain was higher when phenotypic information was narrowed, and an augmentation of the size of the reference population led to an increase in accuracy prediction with regard to genomic evaluation. By taking into account the increase of selection intensity and the decrease of the generation interval induced by genomic selection, the expected annual genetic gain would be higher with ancestry-based genomic evaluation of male candidates than with genetic evaluation based on collaterals. This advantage of genomic selection over genetic selection requires more detailed further study for female candidates. CONCLUSIONS In conclusion, in the population studied, the genomic evaluation of egg quality traits of breeding birds at birth seems to be a promising strategy, at least for the selection of males.

中文翻译:

基因组评估蛋层品质性状的可靠性。

背景技术基于谱系和表型信息以及数千种遗传标记的使用,基因组评估已成为过去几年奶牛育种计划中的标准评估方法。尽管奶牛育种和家禽育种之间存在许多差异,但是基因组选择对于禽类而言似乎是非常有希望的,并且目前正在进行研究以优化禽类选择方案。在此优化观点中,关键参数之一是正确预测纯系层中基因组评估的准确性。结果观察到,无论是雄性还是雌性,基因组评估总是比基因评估更准确。当表型信息变窄时,收益更高,参考种群数量的增加导致基因组评估准确性预测的提高。通过考虑选择强度的增加和基因组选择所引起的世代间隔的减少,男性基于祖先的基因组评估的预期年遗传收益将高于基于抵押品的遗传评估。基因组选择相对于基因选择的优势需要对女性候选人进行更详细的研究。结论总之,在所研究的种群中,至少对于选择雄性而言,对种鸡出生时蛋质量性状进行基因组评估似乎是一种有前途的策略。通过考虑选择强度的增加和基因组选择引起的世代间隔的减少,男性基于祖先的基因组评估的预期年遗传收益将高于基于抵押品的遗传评估。基因组选择相对于基因选择的优势需要对女性候选人进行更详细的研究。结论总之,在所研究的种群中,至少对于选择雄性而言,对种鸡出生时蛋质量性状进行基因组评估似乎是一种有前途的策略。通过考虑选择强度的增加和基因组选择引起的世代间隔的减少,男性基于祖先的基因组评估的预期年遗传收益将高于基于抵押品的遗传评估。基因组选择相对于基因选择的优势需要对女性候选人进行更详细的研究。结论总之,在所研究的种群中,至少对于选择雄性而言,对种鸡出生时蛋质量性状进行基因组评估似乎是一种有前途的策略。基于祖先的男性候选人基因组评估比基于抵押品的遗传评估预期的年度遗传收益更高。基因组选择相对于基因选择的优势需要对女性候选人进行更详细的研究。结论总之,在所研究的种群中,至少对于选择雄性而言,对种鸡出生时蛋质量性状进行基因组评估似乎是一种有前途的策略。基于祖先的男性候选人基因组评估比基于抵押品的遗传评估预期的年度遗传收益更高。基因组选择相对于基因选择的优势需要对女性候选人进行更详细的研究。结论总之,在所研究的种群中,至少对于选择雄性而言,对种鸡出生时蛋质量性状进行基因组评估似乎是一种有前途的策略。
更新日期:2020-04-22
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