genetic polymorphism and association of kappa-casein gene with milk production traits among frieswal (hf × sahiwal) cross breed of indian origin

the aim of the present study was to screen the genotype profile of bovine kappa-casein gene among frieswal (hf × sahiwal) crossbred cattle developed in india. a total number of two hundred frieswal cows were evaluated for hinfi rflp based genotyping of kappa-casein gene. we observed that only two genotypes (aa and ab) exist among the studied population with the genotype frequency of 0.58 (n=117) and 0.42 (n=83), respectively. the calculated allele frequency for a and b was 0.79 and 0.21, respectively. association of genotypes with certain milk production traits revealed that ab had significant (p