在料中提供的原生肠微生物补充剂对哺乳乳奶牛的生产绩效和肠道甲排放的影响
Ainhoa Valldecabres1, Brooke Anderson2, Josh Lefler2
1DairyExperts Inc., Tulare, CA 93274.
Journal of dairy science
|November 19, 2025
概括
补充母乳奶牛与原生肠微生物料补充改善了牛奶和脂肪产量和料效率. 这项研究还观察到体细胞计数的减少,这表明对健康的潜在益处.
科学领域:
- 动物科学动物科学
- 微生物学 微生物学
- 乳制品科学 乳制品科学
背景情况:
- 体微生物补充剂可以影响宿主动物的生理和表现.
- 优化乳头功能对于奶牛的生产力和健康至关重要.
- 评估本地微生物群落为补充开发提供了有针对性的方法.
研究的目的:
- 评估一种特定的原生乳头微生物料补充剂 (GF-MFS) 对乳牛产量的影响.
- 确定GF-MFS对牛奶产量,成分,料效率和肠道甲排放的影响.
- 评估GF-MFS对体细胞计数 (SCC) 的影响,作为健康的指标.
主要方法:
- 一项为期16周的随机对照研究,涉及46头泽西牛.
- 奶牛被分配到对照组或每天接受GF-MFS的治疗组.
- 测量包括牛奶产量,成分,料摄入量,甲排放量和体细胞计数.
主要成果:
- GF-MFS补充剂显著增加了能量校正的牛奶 (ECM),牛奶和脂肪产量.
- 在接受GF-MFS的奶牛中,料效率提高了0.09个单位.
- 在GF-MFS组中,Log10 SCC减少了0.13个单位,这表明乳头健康状况有所改善.
结论:
- 补充原生杂的微生物对乳牛的关键生产参数产生了积极的影响.
- GF-MFS证明了提高料效率和减少体细胞计数的潜力.
- 需要进一步的研究,以充分阐明对肠道甲排放的影响.
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