Khmelnychyi , Serhii, Yuliia Martynova, Petro Mykytiuk, Tetiana Kryvchenko, Vitalii Miadelets, and Maryna Naumenko. “Longevity of Dairy Cows Depending on Breeding Methods”. Bulletin of Sumy National Agrarian University. The series: Livestock, no. 1(44) (March 29, 2021): 103-109. Accessed March 29, 2024. https://snaubulletin.com.ua/index.php/ls/article/view/303.