QTL Affecting Skin Traits on CHI19 in an Angora x Creole Goat Backcross Population

Abstract Text:  Angora and Creole goat breeds differ for fleece characteristics. The Angora goats have a single hair coat fiber (mohair). It is highly valued due to its resistance, flexibility, softness and luster. The Creole goats have a double hair coat: cashmere, fine and short seasonal down coat and coarser and longer guard hair. Type and distribution of skin hair follicle are determinant for fleece characteristics. Our goal was identify chromosomal segment on CHI19 affecting quantitative skin phenotypic trait in an Angora x Creole backcross goat. A total of 354 BC kids from 5 F1 Angora x Creole bucks and 140 Creole goats were used. Nine microsatellites marker on CHI19 were genotyping and five skin traits were used from histological analysis.We report two QTL on CHI19 affecting S/P ratio (average secondary to primary follicle ratio) and S (number of secondary follicles per group).

Keywords:

Angora x Creole goats

backcross

skin traits