In vitro and in vivo analysis of rumen fermentation after supplementary niacin in high concentrated fed cattle. - Wei, Yuting; Lei, Xiaowen; Gao, Yufei; Guo, Yu; Zhao, Xianghui; Li, Yanjiao; Hu, Xiaolong; Qiu, Qinghua; Ouyang, Kehui (Tropical Animal Health & Production, 2025)