中国草食动物科学2025，Vol.45Issue(2)：65-71,7.DOI:10.3969/j.issn.2095-3887.2024.00.120
补饲对育成期安犏牛生长性能和瘤胃微生物区系的影响
Effects of Supplementary Feeding on Growth Performance and Rumen Microbial Community of Angus Cattle-yaks During Growing Period
摘要
Abstract
The study aimed to investigate the impact of supplementation on the growth performance and rumen micro-bial diversity in adolescent Angus cattle-yaks.A total of 12 healthy one-year-old adolescent Angus cattle-yaks with similar body weight were randomly assigned to two groups,with 6 replicates per group.The grazing group(FM group)was subjected to pure grazing,while the supplementation group(BS group)received a combination of grazing and supplementary concentrate feed.The experimental period lasted 100 days,comprising a 10-day pre-feeding phase and a 90-day main feeding phase.The results indicated that the final body weight,total weight gain,and daily weight gain of Angus cattle-yaks in the BS group were 174.36,37.37,and 0.42 kg,respectively,which were significantly higher than those in the FM group(P<0.01).High-throughput sequencing identified a total of 5 987 ASVs in the 12 rumen content samples.Alpha diversity analysis showed that the Simpson index in the BS group was significantly lower than in the FM group(P<0.05).At the phylum level,supplementation significantly increased the relative abundance of Pro-teobacteria and decreased that of Actinobacteria(P<0.05).Among the dominant bacterial genera,the relative abun-dances of Prevotellaceae_UCG-003 and Succinivibrionaceae_UCG-002 in the BS group were significantly higher than in the FM group(P<0.01).The relative abundances of Succinivibrio and Bacteroidales_RF16_group in the BS group were significantly higher than those in the FM group(P<0.05),whereas those of Muribaculaceae and Eubacterium_co-prostanoligenes_group were significantly lower in the BS group(P<0.05).In conclusion,grazing supplemented with concentrate feed enhances the growth performance of Angus cattle-yaks and alters growth and reproduction of rumen microbiota.关键词
补饲/安犏牛/生长性能/瘤胃微生物Key words
supplementation/Angus cattle-yak/growth performance/rumen microbiota分类
畜牧业引用本文复制引用
刘东花,罗兰,吴晓云..补饲对育成期安犏牛生长性能和瘤胃微生物区系的影响[J].中国草食动物科学,2025,45(2):65-71,7.基金项目
国家重点研发计划(2021YFD1600200) （2021YFD1600200）
甘肃省农业农村厅科技项目(GNKJ-2021-38) （GNKJ-2021-38）
