Characterization of Three Ovine KRTAP13 Family Genes and Their Association with Wool Traits in Chinese Tan Sheep

This study investigated the association between three newly identified KRTAP13 genes and wool traits in 240 single-born Chinese Tan sheep. The research found that variations in these genes, particularly KRTAP13-2, were linked to differences in wool characteristics such as fiber diameter standard deviation (FDSD) and coefficient of variation of fiber diameter (CVFD), indicating an influence on fiber uniformity. Allele B of KRTAP13-2 was associated with reduced FDSD and CVFD. The study enhances understanding of the genetic basis of wool traits, which could benefit sheep breeding programs.