1. Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
2. Department of Agronomy, Faculty of Agriculture, Al-Azhar University, Nasr City, Cairo, Egypt
3. Animal Production Department, Faculty of Agriculture, Al-Azhar University, Nasr City, Cairo, Egypt