营养协议,转移反动物微生物群,以提高Nellore牛的料场性能,不同于大理石 EPD
Antonio M Silvestre1, Mariana M Squizatti1, Luana D Felizari1
1School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, , São Paulo, 18618-000, Brazil.
Scientific reports
|November 25, 2025
概括
高湿度玉米 (HMC) 和脂肪酸盐 (CSFA) 改善了内罗尔牛的料场性能和尸体特征. 有机加 (ZnCr) 对遗传倾向的牛最有效,增强葡萄糖和服饰百分比.
科学领域:
- 动物科学动物科学
- 营养生物化学 营养生物化学
- 动物生理学 动物生理学
背景情况:
- 对牛肉行业来说,优化料区的性能和牛的尸体质量至关重要.
- 基因选择对像大理石一样的特征影响了牛对食策略的反应.
- 了解饮食,遗传学和乳头功能之间的相互作用是提高牛肉生产效率的关键.
研究的目的:
- 评估高湿度玉米 (HMC),反保护脂肪 (CSFA) 和有机加 (ZnCr) 对内罗尔牛的表现的影响.
- 评估这些补充剂单独或组合对肠微生物群,尸体特征和养行为的影响.
- 为了确定如何遗传倾向于大理石 (EPD) 影响对饮食干预的反应.
主要方法:
- 150只Nellore年龄的公牛被分为高和低大理石化EPD群.
- 动物被养五种不同的饮食:细粒玉米 (FGC),HMC,FGC+CSFA,HMC+CSFA和HMC+CSFA+ZnCr.
- 系统地分析了料区的性能,尸体特征,小菌群和养行为.
主要成果:
- HMC改善了平均每日增益和增益-料比率,同时减少了干物质摄入量.
- 通过减少炎,CSFA补充剂增强了尸体特征,改善了体健康.
- ZnCr增加了葡萄糖的可用性和装饰百分比,特别是在高EPD的公牛中,表明与遗传学的协同效应.
结论:
- 建议将HMC和CSFA结合起来,以改善整体料区性能和尸体质量.
- 补充ZnCr对于具有大理石化遗传倾向的牛来说尤其有益.
- 饮食策略应考虑遗传背景,以最大限度地提高效率和所需的尸体结果.
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