新生儿腹对荷尔斯泰因奶牛的持续影响 通过多重平价来表现乳性能
Xinfeng Hou1,2, Jingyi Xu3, Jianrong Ren3
1College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, China.
Journal of animal science
|January 28, 2026
概括
乳牛腹显著降低了奶牛的长期哺乳性能,影响了跨平价的牛奶产量和成分. 早期的干预对于减轻这些持续的负面影响对乳牛群的改善至关重要.
科学领域:
- 动物科学动物科学
- 兽医医学 兽医医学 兽医医学
- 乳制品生产 乳制品生产
背景情况:
- 牛犊腹是乳牛群中普遍存在的问题,但它对随后的哺乳期表现的长期影响尚不清楚.
- 了解这些长期影响对于改善奶牛群管理和经济可行性至关重要.
研究的目的:
- 研究小牛腹对荷尔斯坦乳牛的哺乳性能和乳牛群改善 (DHI) 相关指数的长期影响.
- 评估这些影响如何在不同的平价和哺乳期之间有所不同.
主要方法:
- 一项涉及1,907头荷尔斯坦乳牛的回顾性研究,将一组具有小牛腹史 (700头牛) 的群体与一个健康的群体 (1,207头牛) 相比较.
- 利用混合效应模型和调解分析来评估小牛腹对生长,牛奶产量和牛奶成分的影响.
主要成果:
- 曾经患有小牛腹的奶牛在305天的牛奶产量显著降低,并且在所有均值范围内,牛奶产量达到峰值.
- 增长表现,特别是在第一个平价期,受到负面影响. 牛奶生产损失随着平价的增加而累积起来.
- 牛奶脂肪百分比也受到影响,牛奶生产被认为是这种关系的关键调解者.
结论:
- 小牛腹对哺乳期的表现有持续的,有害的影响,延伸到小牛养殖期之外.
- 这些早期的健康挑战显著降低了奶牛一生的哺乳潜力.
- 实施早期干预措施对于减轻哺乳期损失至关重要,尤其是在高平价群体中.
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