1. Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research of Chinese Academy of Agricultural Sciences, Beijing 100081, China
2. Department of Animal and Poultry Production, Faculty of Agriculture, South Valley University, Qena 83523, Egypt
3. College of Animal Science and Technology, Northwest A&F University, Xianyang 712100, China
4. Department of Dairy Science, National Research Centre, Giza 12622, Egypt
5. Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, P.O. Box 237, Earley Gate, Reading RG6 6EU, UK
6. Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua, Periférico R. Aldama Km 1, Chihuahua 31031, Mexico