Coat score. A possible explanation for the zebuine selective sweep located

BALBI, M.; BONAMY, M.; FERNANDEZ M E; CECCO PAULO; VACA R.; ROGBERG MUÑOZ A; PERAL GARCIA P; GIOVAMBATTISTA G

ANIMAL BIOTECHNOLOGY

TAYLOR & FRANCIS INC

Lugar: Londres; Año: 2022 vol. 7 p. 1 - 7

1049-5398

Over 65% of the world’s cattle population resides in warm areas where heat stress conditionslimit the breed of European taurine cattle. Composite breeds were developed to retainthe main traits of both parental breeds. The skin plays a central role in animal response toheat stress. Research on the genetic architecture of skin traits has identified genes andregions related to warm resistance skin features. The aim of this study was to determinewhether the indicine proportion accounted for coat type or whether there were genes oflarge effect segregating in Brangus. Bulls (n¼108) were genotyped using microarrays andtheir coat score and hair length were evaluated. Indicine-taurine genome-wide compositionwas estimated and GWAS was performed. Although significant correlations between indicineproportion and traits were not observed, four windows of SNPs on BTA4 and BTA5explained more than 2% of the trait variance. The GWAS for coat score in summer showedthe main peak on BTA5:46,941,446–48,030,219 bp, accounting for 4.65% of the variance. Ourresults suggest that the variation in coat score and undercoat hair length in ArgentinianBrangus bulls is associated with the presence of some particular gene variants, rather thanwith the whole indicine genetic content