Effect of Different Concentrations of Vitamin A on Production Performance,Egg Quality,and Antioxidant Index in Ducks at Laying Peak
WANG Shuang;ZHANG Hanxing;CHEN Wei;RUAN Dong;XIA Weiguang;LI Yang;WANG Shenglin;LIN Yingcai;ZHENG Chuntian;Institute of Animal Science;Guangdong Academy of Agricultural Sciences;State Key Laboratory of Livestock and Poultry Breeding;Key Laboratory of Animal Nutrition and Feed Science in South China;Ministry of Agriculture;Guangdong Public Laboratory of Animal Breeding and Nutrition;Guangdong Key Laboratory of Animal Breeding and Nutrition;