Vol. 9, Issue 1, Part O (2024)

Present study revealed that polymorphic variants and their association with milk production traits 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. Chi-square values for testing correspondence between observed and expected genotypic frequencies at this locus were found to be non-significant in both Malvi and Nimari breeds of cattle, indicating that the populations of these animals were in Hardy-Weinberg equilibrium at this locus. Association of polymorphic variants of κ -Casein (CSN3) gene with Fat (%) revealed that the mean value of Fat (%) in Malvi, Nimari cattle has been showed non-significant difference between AA and AB genotypes. Among the above genotypes, the significantly higher Fat (%) was noticed in AA genotype of Nimari compared to Malvi.