通过在高谷物挑战过程中补充本地乳头细菌来改善安格斯公牛的表现和增加乳头微生物相互作用
Fan Yang1, Madison T Henniger2, Andrew S Izzo1
1Native Microbials, Inc., 10255 Science Center Drive, San Diego, CA, 92121, USA.
Scientific reports
|January 20, 2025
概括
在高谷物饮食中,原生肠微生物 (NRM) 接种改善了料场牛的表现,通过增加平均每日增益和增强肠微生物群稳定性. 这种新的养策略可以缓解消化系统疾病,并支持动物健康.
科学领域:
- 动物科学动物科学
- 微生物学 微生物学
- 类动物营养 类动物营养
背景情况:
- 养场牛的高谷物饮食可能会导致消化系统疾病,如小酸性病.
- 优化牛的表现和减少经济损失需要创新的养策略.
研究的目的:
- 评估本地菌微生物 (NRM) 直接经经注射对具有高谷物饮食挑战的牛的影响.
- 评估NRM接种对动物性能指标和反动物微生物群稳定性的影响.
主要方法:
- 一个两时期的交叉设计被用在16只安格斯公牛身上.
- 动物每天在挑战前14天和挑战后21天接受NRM (n=8) 或载体缓冲器 (CON,n=8).
- NRM包括6种特定的小肠微生物在1.70M CFU/天/动物.
主要成果:
- NRM注射导致平均每日增益 (ADG) 提高了29% (P=0.037).
- 收益与料比率 (G:F) 的下降趋势为19% (P=0.055).
- 随着NRM的使用,鲁米纳微生物组的稳定性显著改善 (P < 0.001).
结论:
- 在高谷物养条件下,NRM补充可以提高牛的表现和反动物的健康.
- 顺酸路径可能参与转化乳酸乳酸到 propionate,减少代谢压力.
- NRM接种是改善料场牛作业的有希望的策略.
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