GENETIC EVALUATION OF SOME REPRODUCTIVE PERFORMANCE TRAITS IN THREE UPGRADING TRIALS OF DAIRY CATTLE RAISED IN HOT CLIMATE

Document Type : Original Article

Authors

• S. A. Arafa ¹
• M. A. Khalil ²
• E. A. Afifi ³
• S. M. Zahed ¹

¹ Animal Production Research Institute, Ministry of Agriculture, Dokki, Cairo, Egypt

² Department of Animal Production & Breeding, College of Agriculture and Veterinary Medicine, King Saud University, Qassim, Burieda, p.a. Box, 1842, Kingdom of Saudi Arabia

³ Department of Animal Production, Faculty of Agriculture at Moshtohor, Zagazig University, Egypt