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- Title
Effect of Isopropyl Ester of Hydroxy Analogue of Methionine on Rumen Microbiome, Active Enzymes, and Protein Metabolism Pathways of Yak.
- Authors
Zhang, Xirui; Liu, Yao; Zuo, Zizhen; Wang, Chenxi; Peng, Zhongli; Zhong, Jincheng; Wang, Haibo
- Abstract
This study aims to investigate the effect of methionine analogue 2-hydroxy-4-methylthiobutanoic acid isopropyl ester (HMBi) on the rumen microbial community, microbial carbohydrate-active enzymes (CAZy), and protein metabolism pathways in yak. Twenty-four male Maiwa yaks (252.79 ± 15.95 kg) were selected and randomly divided into groups that received the basal diet alone, or a diet supplemented with different amounts of HMBi (5 g, 10 g or 15 g). At the phylum level, the group receiving 5 g of HMBi showed a considerably higher relative abundance of Lentisphaerae than the other treatment groups (p < 0.05). The relative abundance of Actinobacteria decreased linearly with the increase in HMBi supplemental levels (p < 0.05). The relative abundance of Prevotella increased linearly with the increasing level of HMBi supplementation (p < 0.05). The relative abundance of Butyrivibrio linearly decreased (p < 0.05), and the relative abundance of Alistipes tended to linearly decrease (p = 0.084). The addition of HMBi had linear or quadratic effects on the relative abundance of CAZy enzymes and functional proteins in the rumen of yak (p < 0.05). Conclusively, these results indicated that feeding yaks a diet supplemented with HMBi is an excellent strategy to enhance carbohydrate breakdown, and improve rumen microbial structure and function.
- Subjects
HYDROXY esters; PROTEIN metabolism; YAK; RUMEN fermentation; MICROBIAL enzymes; DIETARY supplements; CHOLESTERYL ester transfer protein; METHIONINE
- Publication
Fermentation (Basel), 2024, Vol 10, Issue 2, p94
- ISSN
2311-5637
- Publication type
Article
- DOI
10.3390/fermentation10020094