霍尔斯坦牛犊用直接养的微生物和含有植物提取物或直接养的微生物单独或组合的起始剂养牛奶替代品
Lydia K Olagunju1, David P Casper2, Michael Officer3
1Department of Animal Science, North Carolina A&T State University, Greensboro, NC 27411.
Journal of dairy science
|June 22, 2024
概括
植物提取物 (BE) 和直接养的微生物 (DFM) 对小牛的生长和肠道健康的益处最小. 结合BE和DFM在荷尔斯坦小牛中没有产生协同效应.
科学领域:
- 动物科学动物科学
- 类动物营养 类动物营养
- 牛犊健康 牛犊健康
背景情况:
- 植物提取物 (BE) 改善料摄入量和肠道健康.
- 直接养的微生物 (DFM),如Lactobacillus acidophilus发酵产品 (EX),可以增强肠道健康和生长.
- 在新生小牛中结合BE和DFM的协同潜力需要研究.
研究的目的:
- 评估植物提取物 (BE) 和直接养微生物 (DFM) 单独和组合对新生Holstein小牛生长和肠道健康的影响.
- 测试结合BE和DFM提供协同效益的假设.
主要方法:
- 80只荷尔斯坦公牛 (2-5天大) 在2x4的因数设计中被分配给8次治疗.
- 治疗包括含有或不含EX的牛奶替代剂 (MR) 和用对照剂,BE,EX或BE+EX的小牛初剂 (CS).
- 牛犊被养了56天,并监测了生长表现和便分数.
主要成果:
- 对于生长性能或身体框架测量,没有观察到MR和CS治疗之间的显著相互作用.
- 牛奶替代剂的主要作用显示了类似的体重增加. 牛犊启动器主要效应也显示了所有治疗方法的类似体重增加.
- 与对照组相比,便得分表明,单独或组合使用BE或EX补充剂没有显著改善.
结论:
- 这项研究发现,在新生Holstein小牛中,单独或组合补充BE或EX对生长表现或健康益处的证据有限.
- 在研究的条件下,BE和DFM的组合并没有对小牛的生长或肠道健康产生协同效应.
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