Sedyuk , Igor, Andrey Zolotarev, Svetlana Zolotareva, and Mykola Mashkin. “Efficiency of Application Energy-Protein Supplements With the Protected Protein at Growing of Repair Heifers”. Bulletin of Sumy National Agrarian University. The series: Livestock, no. 1 (40) (February 24, 2020): 82-86. Accessed April 25, 2024. https://snaubulletin.com.ua/index.php/ls/article/view/173.