Breeding

A genome‐wide association study reveals a quantitative trait locus for calf mortality on chromosome 9 in Japanese Black cattle

26 days ago   |   By Animal Genetics

Summary
Calf mortality is a major problem affecting cattle production. To identify genetic variants associated with calf mortality in Japanese Black cattle, we evaluated calf mortality as a categorical trait using a threshold model and conducted a GWAS. We identified two SNPs between 32 549 297 and 32 606 924 bp on bovine chromosome 9 that were significantly associated with calf mortality from 61 to 180 days after birth. The SNP showing the highest association was localized at a region 624 bp downstream of exon 4 of the anti‐silencing function 1A histone chaperone gene that promotes DNA...
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