title: Genetic polymorphism and association of kappa-casein gene with milk production traits among Frieswal (HF × Sahiwal) cross breed of Indian origin.
abstract: 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<0.05) effect on total milk yield, peak yield, yield at 300 days and SNF% as compared to AA.
authors.affiliation: Molecular Genetics Laboratory, Animal Genetics and Breeding Division, Indian Council of Agricultural Research-Central Institute for Research on Cattle, Meerut Cantt. Meerut-250001, Uttar Pradesh, India.
authors.forename: R
authors.initials: R
authors.lastname: Deb
authors.affiliation: Molecular Genetics Laboratory, Animal Genetics and Breeding Division, Indian Council of Agricultural Research-Central Institute for Research on Cattle, Meerut Cantt. Meerut-250001, Uttar Pradesh, India.
authors.forename: U
authors.initials: U
authors.lastname: Singh
authors.affiliation: Molecular Genetics Laboratory, Animal Genetics and Breeding Division, Indian Council of Agricultural Research-Central Institute for Research on Cattle, Meerut Cantt. Meerut-250001, Uttar Pradesh, India.
authors.forename: S
authors.initials: S
authors.lastname: Kumar
authors.affiliation: Molecular Genetics Laboratory, Animal Genetics and Breeding Division, Indian Council of Agricultural Research-Central Institute for Research on Cattle, Meerut Cantt. Meerut-250001, Uttar Pradesh, India.
authors.forename: R
authors.initials: R
authors.lastname: Singh
authors.affiliation: Molecular Genetics Laboratory, Animal Genetics and Breeding Division, Indian Council of Agricultural Research-Central Institute for Research on Cattle, Meerut Cantt. Meerut-250001, Uttar Pradesh, India.
authors.forename: G
authors.initials: G
authors.lastname: Sengar
authors.affiliation: Molecular Genetics Laboratory, Animal Genetics and Breeding Division, Indian Council of Agricultural Research-Central Institute for Research on Cattle, Meerut Cantt. Meerut-250001, Uttar Pradesh, India.
authors.forename: A
authors.initials: A
authors.lastname: Sharma
keywords: Frieswal; Kappa-casein; Milk production traits; Polymorphism; RFLP