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哺乳期荷尔斯坦和泽西奶牛的料效率和行为之间的关系不同

Vivi M Thorup¹, Lene Munksgaard¹, Marta Terré²

¹Department of Animal and Veterinary Sciences, Aarhus University, Blichers Allé 20, 8830 Tjele, Denmark.

The Journal of dairy research

|August 24, 2023

概括

奶牛的高料效率 (FE) 与饮食行为和活动有关. 有效的泽西奶牛吃得更慢,不像霍尔斯坦奶牛那样不那么活跃,这表明了品种特定的关系.

科学领域:

动物科学动物科学
乳制品生产乳制品生产
动物行为动物行为

背景情况:

高料效率 (FE) 在乳制品生产中至关重要,以最大限度地降低成本和环境影响.
了解FE,饮食行为和活动之间的相互作用至关重要,但尚未建立.
奶牛的生产力和环境足迹受到料摄入量和能源利用的影响.

研究的目的:

研究奶牛的料效率 (FE) 与特定的饮食行为和活动水平之间的关系.
为了比较不同品种 (荷尔斯坦和泽西) 和哺乳期的这些关系.
确定与乳牛高FE相关的行为指标.

主要方法:

利用了253个荷尔斯坦和泽西奶牛在自动挤奶系统中的哺乳期的数据.
使用自动槽记录料摄入行为和使用传感器记录活动 (牛奶5-200天).
采用混合线性模型,在四个哺乳期内将FE与活动 (步骤,躺着) 和饮食行为特征相关联.

主要成果:

在Jersey奶牛中,FE与行为之间的个人级别相关性比Holstein奶牛更强.
两种品种的进食率与FE有负相关性,高效的泽西牛是较慢的进食者.
在泽西奶牛中,体力活动与FE有负相关性,但在荷尔斯坦奶牛中不显著.

结论:

在Jersey奶牛的整个哺乳期内,进食率始终与FE负相关.
在荷尔斯坦和泽西品种之间,FE,饮食行为和活动之间的关系不同.
对奶牛行为的品种特定见解可以为提高乳制品生产中的料效率的策略提供信息.

关键词:

牛活动牛活动饮食行为饮食行为料转换率的使用率.养行为养行为

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