ASSOCIATION BETWEEN ATP1A1 GENE POLYMORPHISMS WITH SEMEN CHARACTERISTICS IN HOLSTEIN BULLS

This study was conducted to identify the polymorphism of ATP1A1 gene, distribution ratios, and its association with semen characteristics Holstein bulls. Twenty-five bulls were used currently. Blood samples collected via venipuncture separate DNA gene. Semen using an artificial vagina for fresh evaluation. Results showed change cytosine (C) nucleotide at site 15738 adenine (A) exon 17 (SNP C15738A) Two polymorphisms obtained according this change, first is wild (CC; allele frequency 0.84), second heterogeneous (CA; 0.16). The CC gene exhibited a highly significant (p<0.01) superiority ejaculate volume, sperm concentration, mass activity, sperm’s cell individual motility (p<0.05), compared CA other did not differ between two mentioned polymorphisms. obvious despite stress conditions feed shortage poor management practices accompanied covid-19 pandemic. can be predict fertility resistance before they reach sexual maturity reflection on economic return breeding these insemination centers.