Institute of Animal Science and Veterinary Medicine Hainan Academy of Sciences Haikou 571100 ChinaHainan Key Lab of Tropical Animal Reproduction Breeding and Epidemic Disease Research Haikou 571100 China;
Institute of Animal Science and Veterinary Medicine Hainan Academy of Sciences Haikou 571100 China;
Protein level; Concentrate supplement; Hainan Yellow Cattle; Production performance; Serum biochemical parameters;