Vol. 9, Special Issue 2 (2024)

Author(s): Akhilesh Pandey, MS Thakur and Y Pandey

Abstract: Present study revealed that polymorphic variants and their association with milk production trait, Lactose % at κ-casein gene (CNS3) locus in Malvi and Nimari, cattle. The frequency of A allele was found to be highest as compared to B allele in above both breeds of cattle under the study. Association of polymorphic variants of κ -Casein (CSN3) gene with revealed that the frequencies of AA is higher as compared to AB and BB genotypes. The frequency of A allele was found to be highest as compared to B allele in all the four breeds of cattle under the study. Association study revealed that the frequencies of AA genotype is higher as compared to AB and BB genotypes. The frequency of A allele was found to be highest as compared to B allele in above both breeds of cattle. The analysis of variance showed significant (p<0.01) effect of breed on Lactose (%) trait. The mean Lactose (%) of both AA and AB genotypes of Nimari showed significantly higher Lactose (%) in milk than both AA and AB genotypes of Malvi breed of cow whereas both Malvi and Nimari breed of cow showed non-significant difference among its own AA and AB genotypes.