活菌酵母对产期乳母奶牛的生酵母管理的影响
Lorenzo Benedetti1, Luca Cattaneo1, Alessandro Vercesi1
1Department of Animal Science, Food and Nutrition (DIANA), Faculty of Agricultural, Food and Environmental Sciences, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy.
Animals : an open access journal from MDPI
|February 10, 2024
概括
在过渡时期,奶牛的活酵母补充剂改善了牛奶产量和氧化状态. 这项研究发现,Saccharomyces cerevisiae对牛奶生产有好处,并减少了氧化应激标志物.
科学领域:
- 动物科学动物科学
- 乳制品营养 乳制品营养
- 动物生理学 动物生理学
背景情况:
- 乳牛的过渡期带来了重大的生理挑战.
- 活酵母补充剂被探索为减轻压力和改善健康的策略.
- 了解酵母对新陈代谢和炎症的影响对于乳制品管理至关重要.
研究的目的:
- 为了评估活酵母 (Saccharomyces cerevisiae) 对牛奶产量,料摄入量以及过渡期奶牛的代谢/炎症状况的影响.
- 评估酵母补充剂对关键绩效指标和健康参数在关键产卵后期的影响.
主要方法:
- 这是一项随机对照试验,涉及多雌性荷尔斯坦牛,分为对照 (CTR) 和活体Saccharomyces cerevisiae (LSC) 组.
- 从分娩前21天到分娩后56天,每天补充4克活酵母.
- 监测干物摄入量,牛奶产量/成分,反时间,收集血液和便样本进行代谢和消化性分析.
主要成果:
- 两组之间没有观察到干物质摄入量或牛奶成分的显著差异.
- 活酵母补充剂导致在研究的后几周增加了牛奶产量,并在分娩后减少了反时间.
- 虽然炎症标志物保持不变,但活酵母增加了β-基酸盐和减少了活性氧代谢物 (ROM),表明氧化状态有所改善.
结论:
- 活酵母补充剂对过渡期奶牛的牛奶产量产生积极影响.
- 补充Saccharomyces cerevisiae似乎增强了氧化状态,由减少的活性氧代谢物证明.
- 进一步的研究可能会阐明最佳的酵母含量率和改善乳牛表现的具体机制.
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