Panliang Chen, Yan Li, Meimei Wang, Yizhao Shen, Mingchao Liu, Hongjian Xu, Ning Ma, Yufeng Cao, Qiufeng Li, Mahmoud M Abdelsattar, Zhiyuan Wang, Zihan Huo, Shuai Ren, Linqi Hu, Jie Liu, Yanxia Gao, Jianguo Li
The dietary rumen-degradable starch (RDS) to rumen-degradable protein (RDP) ratio, denoted as the RDS-to-RDP ratio (SPR), has been proven to enhance in vitro rumen fermentation. However, the effects of dietary SPR in vivo remain largely unexplored. This study was conducted to investigate the effect of dietary SPR on lactation performance, nutrient digestibility, rumen fermentation patterns, blood indicators, and nitrogen (N) partitioning in mid-lactating Holstein cows. Seventy-two Holstein dairy cows were randomly assigned to three groups (24 head/group), balanced for (mean ± standard deviation) days in milk (116 ± 21...
2024: Frontiers in Veterinary Science