Bondarenko , Yuriy, and Victor Khvostik. “Improving the Productivity of Domestic Meat and Egg Chickens”. Bulletin of Sumy National Agrarian University. The series: Livestock, no. 2 (41) (October 26, 2020): 29-32. Accessed April 26, 2024. https://snaubulletin.com.ua/index.php/ls/article/view/196.