系统性审查:外源酶对乳牛犊的疗效
Stefan Yerby1, Daisy Taylor1, Helen Warren2
1College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK.
The Journal of dairy research
|February 12, 2026
概括
外源酶 (EE) 在乳牛养殖中表现有前途,改善纤维消化能力和福利指标. 然而,不一致的增长和料效率的结果需要进一步的研究和强大的实验设计.
科学领域:
- 动物科学动物科学
- 营养生物化学 营养生物化学
- 动物生理学 动物生理学
背景情况:
- 外源酶 (EE) 越来越多地被探索它们在动物营养中的潜在益处.
- 乳牛养殖对最佳生长,健康和福利提出了独特的挑战.
- 了解EE在小牛中的有效性对于改善畜牧生产系统至关重要.
研究的目的:
- 系统地审查和量化对乳牛养殖中外源酶疗效的证据.
- 巩固现有关于EE对小牛表现,行为,健康和环境输出的影响的研究.
- 确定研究缺口,并指导未来关于小牛营养中的EE研究.
主要方法:
- 对17篇关于乳牛外源性酶补充的文章的系统文献综述.
- 对测量小牛表现,行为,健康和环境指标的研究进行分析.
- 单独对酶效应的评估与与其他治疗相结合的评估.
主要成果:
- 17项研究中的15项报告了EE对至少一个测量变量的积极影响.
- 随着EE补充,观察到纤维消化能力的持续增加.
- 发现对生长和料效率产生不一致的影响;联合EE处理并不总是优于独立选择.
- 据报道,小牛的行为有所改善 (减少非营养性口腔行为,增加休息/反) 和小牛皮发育.
- 提出了改善小牛福利和降低养殖成本的可能性.
结论:
- 外源酶显示出改善乳牛纤维消化能力,行为和福利的潜力.
- 需要进一步的研究来澄清EE对生长和料效率的影响,这需要有力的研究.
- 针对性的实验设计,考虑到酶机制和统计能力,对于未来的小牛EE研究至关重要.
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