Akademik Veri Yönetim Sistemi
Van Veterinary Journal, cilt.34, sa.2, ss.93-97, 2023 (Hakemli Dergi)
The CACNA2D1 gene encodes the CACNA2D1 protein and, this protein is involved in the excitation-contraction mechanism of the muscle cells during milk withdrawal, helps the nipples to open and close. Because of this role in physiological mechanism and its relationship with quantitative trait locus (QTL) regions, CACNA2D1 gene is known to be associated with mastitis resistance. In this study, it was aimed to investigate the relationship between different three SNP (C367400T, A496561G and G519663A) on the CACNA2D1 gene, and subclinical mastitis in Holstein breed cattle reared in Develi district of Kayseri province. SNPs were genotyped from DNA samples by PCR-RFLP method. In the study, California mastitis test (CMT) data, and distributions of genotypes of the three SNPs on the CACNA2D1 gene were calculated. In the study, genotype distributions were determined in terms of C367400T, A496561G and G519663A SNPs found on the CACNA2D1 gene according to CMT status. The difference between the C367400T, A496561G and G519663A SNPs was not significant (p>0.05). In the study group examined the Chi-square (χ2) analysis conducted, it was observed that the Holstein cattle were in the Hardy-Weinberg equilibrium (HWE) in terms of C367400T and A496561G SNPs, deviation from HWE for the G519663A SNP (p<0.05). As a result, it was thought that the CACNA2D1 gene and these SNPs should be evaluated with more samples and different mastitis indicator data in studies on mastitis resistance.