1. Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
2. Faculty of Agriculture, Department of Poultry Production, Assiut University, Assiut, Egypt
3. Faculty of Agriculture, Department of Animal Production, Cairo University, Giza, Egypt