一种精油混合物,用于养牛的生长性能和尸体特征
C Poppy1, M N Nair1, L N Edwards-Callaway1
1Department of Animal Sciences, Colorado State University, Fort Collins, CO 80523, USA.
Translational animal science
|June 13, 2025
概括
精油混合物 (EOB) 显示出作为料场抗生素替代品的前景,改善早期转向生长和包装百分比. 虽然没有影响肝,但EOB的食效率与蒙宁素和泰洛辛素相比相当.
科学领域:
- 动物科学动物科学
- 类动物营养 类动物营养
- 料添加剂 料添加剂
背景情况:
- 由于对抗菌素耐药性的担忧,在料场的抗生素使用正在受到审查.
- 精油 (EO) 具有抗微生物,抗病毒,抗真菌和抗氧化特性.
- 欧可以作为传统料场抗生素的替代品,如单酶 (M) 和泰洛辛 (T).
研究的目的:
- 评估专利精油混合物 (EOB) 作为潜在的料区抗生素替代品的有效性.
- 为了比较EBO,M,T和组合对方向盘性能,尸体特征和肝脏的影响.
主要方法:
- 400只交叉品种的牛被分配给五种饮食治疗:对照,EOB,EOB + M + T,M + T和EOB + M.
- 牛被以蒸汽片的玉米总混合料 (TMR) 长达182天.
- 记录了个体体重,料摄入量,尸体数据和肝发生率.
主要成果:
- 与其他治疗相比,在最初的3个28天期间,食EOB的公牛显示出改善的平均每日增益 (ADG).
- 整体研究ADG在所有治疗方法中都是相似的.
- 与对照组和M + T组相比,养EOB的公牛的穿衣百分比更高.
- 控制组的料效率最低,所有其他治疗方法的效率相似.
- 单宁素+泰洛 (M+T) 导致肝的发病率最低,而EOB组显示的结果中等.
结论:
- 将精油混合物 (EOB) 给完成牛的牛,提高了早期生长和装饰的百分比.
- EOB证明了与蒙宁素和泰洛辛素相比的可比料效率.
- 与对照组相比,EOB对肝脏发生率没有显著影响.
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