Institution: | 1. Department of Animal and Fish Production, Faculty of Agriculture, Alexandria University, Alexandria P.0. 21545, Egypt 2. Faculty of Veterinary Medicine and Animal Science, Autonomous University of the State of Mexico, Toluca P.0. 50000, Mexico 3. Faculty of Veterinary and Livestock, Autonomous University of Guerrero, Altamirano P.0. 40660, Mexico 4. Dairy Science Department, National Research Centre, 33 Bohouth st. Dokki, Giza P.0. 12311, Egypt |