Ladyka VI, Pavlenko YM, Skliarenko YI. FORMATION OF ECONOMICALLY USEFUL TRAITS IN COWS THE SUMY INNEVSTRAIUS OF UKRAINIAN BLACK-AND-WHITE DAIRY BREED OF DIFFERENT GENOTYPES BY BETA-CASEIN. ls [Internet]. 2022Sep.29 [cited 2024May17];(2):20-3. Available from: https://www.snaubulletin.com.ua/index.php/ls/article/view/654