TY CONF TI DNA TESTING OF SELPex8 GENE POLYMORPHISM IN A POPULATION OF HOLSTIN CATTLE KW gene KW allele KW polymorphism KW selectin KW SELPex8 KW first-calf cows. JO XIII All-Russian scientific-practical conference of young scientists «Achievements and prospects of development of the Russian agriculture", dedicated to the memory of R.G. Gareev AU Fattahova, Z.. AU Safina, N.. AU Gaynutdinova, E.. AU Shakirov, S.. PY 2023 PB TRIA FRC Kazan Scientific Center of RAS