用参数和非参数模型对霍尔斯坦牛中代谢障碍的血液生物标志物的基因组预测
Lucio F M Mota1, Diana Giannuzzi2, Sara Pegolo3
1Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro, PD, Italy. flaviommota.zoo@gmail.com.
Genetics, selection, evolution : GSE
|April 29, 2024
概括
使用Stack方法进行基因组选择可以准确预测乳牛的代谢障碍. 与传统模型相比,这种方法为健康和弹性特征提供了更好的预测准确度.
科学领域:
- 动物遗传学和动物繁殖
- 乳牛健康 乳牛的健康
- 代谢性疾病研究研究
背景情况:
- 代谢障碍会对乳牛的生产力和繁殖产生负面影响.
- 亚临床症状可以发生在产后和整个哺乳期.
- 基因组选择 (GS) 提供了提高牛对代谢问题的弹性潜力.
研究的目的:
- 评估乳牛中代谢困境的血清生物标志物的基因组预测模型.
- 为了比较参数和非参数GS模型的准确性.
主要方法:
- 在1353头荷尔斯坦牛的血清生物标记水平的基因组预测.
- 模型的评估:GBLUP,贝叶斯B,ENET,GBM和Stack (ENET和GBM的集合).
- 单核酸多态 (SNP) 芯片数据的分析.
主要成果:
- 堆方法显示出优异的预测准确性,表现优于GBLUP,BayesB,ENET和GBM.
- 对于特定的生物标志物,如哈普托格洛宾,Zn,CuCp,FRAP和PROTt,观察到显著的预测准确度改善.
- 使用GBM顶级SNP的子集从GBM大大提高了GBLUP的准确性,虽然它减少了其他模型的准确性.
结论:
- 斯塔克方法在预测乳牛的代谢障碍方面非常准确.
- 这种组合方法对于具有附加性和非附加性遗传效应的复杂特征具有竞争力.
- 通过GBM选择标记物提高了GBLUP准确性.
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