在早期哺乳期的奶牛中,最佳的 propionate 补充改善了牛奶产量,并改变了牛奶的成分
Fan Zhang1, Xiangfang Tang1, Benhai Xiong1
1State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
Animals : an open access journal from MDPI
|October 29, 2025
概括
补充乳牛350g/d的 propionate提高了哺乳期乳产量,改变了牛奶矿物质和脂肪酸的特征. 这种饮食策略有望改善早期哺乳期奶牛的管理.
科学领域:
- 动物科学动物科学
- 乳制品营养 乳制品营养
- 动物的新陈代谢
背景情况:
- 低血症和症是早期哺乳期奶牛的代谢挑战.
- propionate 是一种已知用于预防这些疾病的料添加剂.
- 优化其剂量对于最大化益处至关重要.
研究的目的:
- 评估不同 propionate 食水平对奶牛表现的影响.
- 为了分析牛奶矿物质和脂肪酸成分的变化,以应对补充.
- 为了确定早期哺乳期荷尔斯坦牛的最佳 propionate水平.
主要方法:
- 32只荷尔斯坦牛被分配到四个饮食组 (0, 200, 350, 500克/天 propionate).
- 每天监测生产能力,直到哺乳期达到峰值 (36-125天在牛奶中).
- 牛奶样本在7,21和35天的牛奶中分析了矿物质和脂肪酸概况.
主要成果:
- 补充基酸盐往往会增加哺乳期牛奶的峰值产量,最高产量为350g/d.
- 牛奶的度显示为二次数的增加,而和线性减少补充.
- 短链脂肪酸线性下降,而某些多不和脂肪酸随着 propionate 水平的增加而二次性下降.
结论:
- 每天补充350克 propionate似乎是改善早期哺乳乳母牛哺乳性能的最佳方法.
- 食 propionate 显著改变了牛奶矿物质和脂肪酸的特征.
- 这种补充水平在过渡期为乳牛管理提供了有价值的策略.
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