Ladyka , Volodymyr, Yuriy Sklyarenko, Yuliya Pavlenko, and Alyona Malikova. “Comparative Evaluation of Dairy Productivity of Cows of Ukrainian Brown Milk Breed of Different Genotypes by β-Casein”. Bulletin of Sumy National Agrarian University. The series: Livestock, no. 3 (42) (November 30, 2020): 3-7. Accessed March 29, 2024. https://snaubulletin.com.ua/index.php/ls/article/view/221.