A review of machine learning models applied to genomic prediction in animal breeding

被引:24
作者
Chafai, Narjice [1 ]
Hayah, Ichrak [1 ]
Houaga, Isidore [2 ,3 ]
Badaoui, Bouabid [1 ,4 ]
机构
[1] Mohammed V Univ Rabat, Fac Sci, Dept Biol, Lab Biodivers Ecol & Genome, Rabat, Morocco
[2] Univ Edinburgh, Roslin Inst, Ctr Trop Livestock Genet & Hlth, Royal Dick Sch Vet Med, Edinburgh, Scotland
[3] Univ Edinburgh, Roslin Inst, Royal Dick Sch Vet Studies, Edinburgh, Scotland
[4] Mohammed VI Polytech Univ UM6P, African Sustainable Agr Res Inst ASARI, Laayoune, Morocco
关键词
artificial intelligence; algorithms; classification; regression; genomic selection; animal breeding; SNPs; SELECTION; INFORMATION; POPULATION; PRINCIPLES; IMPUTATION; ACCURACY; VALUES; CATTLE;
D O I
10.3389/fgene.2023.1150596
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
The advent of modern genotyping technologies has revolutionized genomic selection in animal breeding. Large marker datasets have shown several drawbacks for traditional genomic prediction methods in terms of flexibility, accuracy, and computational power. Recently, the application of machine learning models in animal breeding has gained a lot of interest due to their tremendous flexibility and their ability to capture patterns in large noisy datasets. Here, we present a general overview of a handful of machine learning algorithms and their application in genomic prediction to provide a meta-picture of their performance in genomic estimated breeding values estimation, genotype imputation, and feature selection. Finally, we discuss a potential adoption of machine learning models in genomic prediction in developing countries. The results of the reviewed studies showed that machine learning models have indeed performed well in fitting large noisy data sets and modeling minor nonadditive effects in some of the studies. However, sometimes conventional methods outperformed machine learning models, which confirms that there's no universal method for genomic prediction. In summary, machine learning models have great potential for extracting patterns from single nucleotide polymorphism datasets. Nonetheless, the level of their adoption in animal breeding is still low due to data limitations, complex genetic interactions, a lack of standardization and reproducibility, and the lack of interpretability of machine learning models when trained with biological data. Consequently, there is no remarkable outperformance of machine learning methods compared to traditional methods in genomic prediction. Therefore, more research should be conducted to discover new insights that could enhance livestock breeding programs.
引用
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页数:18
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