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Copy number variation (CNV) is one kind of genomic structure variations and presents as gains and losses of genomic fragments. More recently, we have made an atlas of CNV maps for livestock. In the future, it is a primary focus to determine the phenotypic effects of candidate CNVs. Lysine Acetyltransferase 6 A ( KAT6A ) is a protein coding gene and plays a critical role in many cellular processes. However, the effects of  KAT6A  CNVs on sheep body measurements remains unknown. In this study, we performed quantitative polymerase chain reaction (qPCR) to detect the presences and distributions of three CNV regions within  KAT6A  gene in 672 sheep from four Chinese breeds. Association analysis indicated that the three CNVs of  KAT6A  gene were significantly associated with body measurement(s) in Small-tailed Han sheep (STH) and Hu sheep (HU) ( p  &lt; 0.05), while no effects on Large-tailed Han sheep (LTH) were observed ( p  &gt; 0.05) were observed. Additionally, only one CNV was significantly associated with body measurement (body length) in Chaka sheep (CK) ( p  &lt; 0.05). Our study provided evidence that the CNV(s) of  KAT6A  gene could be used as candidate marker(s) for molecular breedings of STH, HU, and CK breeds.

Copy number variations of the KAT6A gene are associated with body measurements of Chinese sheep breeds