Effects of lipopolysaccharide infusion on feed intake, apparent digestibility, rumen fermentation and microorganisms of young Holstein bulls fed diets with different ratios of lysine and methionine - Wang, Huiyao; Liu, Hongyun; Pan, Shijia; Ma, Zhicong; Wang, Yanming; Liu, Jianxin; Wang, Chong; An, Zhigao (Frontiers in Veterinary Science, 2025)