在Montbéliarde×Holstein和Holstein牛群之间比较转动物微生物群,新陈代谢和牛奶性能
Haomiao Chang1, Xinling Wang1, Hanfang Zeng1
1College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.
Frontiers in veterinary science
|August 21, 2023
概括
将蒙贝利亚德牛与荷尔斯坦牛交叉繁殖可以提高牛奶蛋白质含量,并降低体细胞分数. 这种杂交品种还表现出改变的反动物微生物群和代谢物概况,可能提高奶牛的健康和产品质量.
科学领域:
- 乳制品科学 乳制品科学
- 动物育种 动物育种
- 微生物组研究 微生物组研究
背景情况:
- 荷尔斯坦牛以高的牛奶产量而闻名,但表现出疾病易感性和较低的生育能力.
- 杂交提供了一种提高乳牛特征和产品质量的策略.
研究的目的:
- 为了研究杂交蒙贝利亚德和霍尔斯坦牛的好处.
- 探索食新陈代谢物,牛奶性能和杂交乳牛中的微生物群组成之间的关系.
主要方法:
- 蒙特贝利亚德×霍尔斯坦 (MH) 和霍尔斯坦 (H) 奶牛的比较研究 (n=23每组).
- 收集和分析超过10个月的乳牛群改善 (DHI) 数据.
- 16S rRNA测序用于反动物微生物分析和反动物液的向代谢组分析.
主要成果:
- 蒙特贝利亚德×荷尔斯坦牛的平均牛奶产量 (1.76公斤) 和蛋白质含量 (0.1%) 较高,体细胞得分明显较低 (p < 0.01).
- 鲁米纳微生物群分析显示,在MH牛中,Alphaproteobacteria的丰度较低,Selenomonas和Succiniclasticum的丰度较高.
- 代谢分析表明,MH牛中转酸,二碳酸和酸的水平增加,拉索斯特醇的水平降低.
结论:
- 蒙贝利亚德牛与荷尔斯坦牛的杂交增加了牛奶蛋白质含量,并降低了炎症指标 (体细胞评分).
- 转动物微生物群和杂交牛中的特定代谢物的变化表明可能改善健康,抗氧化,抗炎和抗菌性质.
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