Genetic evaluation for piglet crushing behaviour in primiparous sows

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
M. Jafarikia, Zahra Karimi, Brent DeVries, Flavio S Schenkel, Brian Sullivan, Ray Lu
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Abstract

Stress in farrowing sows is associated with the number of piglets crushed or attacked. Sow’s behaviour is variable and heritable, therefore genetic selection can be a viable approach for improving pig’s welfare. In this report, we used first parity litter records of Yorkshire sows to test a genetic evaluation model for piglet crushing. The data were split into training and validation to check the prediction accuracy of piglet crushing EBVs for young sows. We found that the estimated heritability of piglet crushing was 0.07±0.03. The difference in the EBVs in the validation set was equivalent to 0.15 more piglets crushed in the top 10% group than in the bottom group of sows. These results indicate that the genetic selection may be used to reduce piglet crushing which will improve the welfare of pigs as well as production efficiency. The average reliability of the estimated EBVs across all animals in the pedigree was (0.07; 0.0 to 0.72). More research on evaluation models and the genetics underlying sow stress and behaviour is warranted to improve the reliabilities of modeling and to identify robust genetic markers for animal breeding for the implementation.
初产母猪挤压仔猪行为的遗传评估
产仔母猪的压力与被压或被攻击的仔猪数量有关。母猪的行为是可变的,也是可遗传的,因此遗传选择是改善猪福利的可行方法。在本报告中,我们使用约克郡母猪的第一胎产仔记录来测试仔猪挤压的遗传评估模型。数据被分为训练和验证两部分,以检查青年母猪仔猪挤压EBV的预测准确性。我们发现,仔猪挤压的估计遗传率为 0.07±0.03。验证集中 EBV 的差异相当于前 10%组的母猪比后 10%组的母猪多压死 0.15 头仔猪。这些结果表明,遗传选择可用于减少仔猪挤压,从而提高猪的福利和生产效率。血统中所有动物的估计 EBV 的平均可靠性为(0.07;0.0 至 0.72)。有必要对评估模型以及母猪应激和行为背后的遗传学进行更多研究,以提高建模的可靠性,并为动物育种的实施确定稳健的遗传标记。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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