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进入户外开放的包装可以促进奶牛的活动

Anne-Marieke C Smid^1,2, Tracy A Burnett^3,4, Augusto M L Madureira^3,4

¹Faculty of Land and Food Systems, Animal Welfare Program, The University of British Columbia, Vancouver, British Columbia, Canada.

|August 8, 2024

概括

为奶牛提供户外接入,改善了雌性表达和持续时间,特别是在高温湿度指数时期. 这表明户外接入可以提高农场的雌性检测和生殖效率.

科学领域:

动物科学动物科学
乳牛的繁殖乳牛的繁殖
动物养殖动物养殖

背景情况:

奶牛更喜欢户外的深床包.
连续户外活动对奶牛期行为的影响仍未得到充分研究.

研究的目的:

为了调查是否访问户外开放的深床包增强了哺乳乳乳母牛的雌性行为表达.
为了确定户外接入对期持续时间和安装强度的影响.

主要方法:

在分娩后的12周内,监测了60头正在哺乳的霍尔斯坦牛.
奶牛被分配到户外访问 (户外) 或室内限制 (室内) 组.
使用自动活动监测器和视频录制来跟踪雌性行为;通过超声波确认生殖周期.

主要成果:

与室内奶牛相比,户外准入的奶牛的期持续时间较长 (12.4小时 vs 9.9小时).
室内奶牛的安装强度降低,室内温度湿度指数 (THI) 增加.
户外接入减轻了THI升高对安装行为的负面影响.

结论:

让奶牛进入户外深床包可以增加安装行为和期的持续时间.
户外接入可以提高雌性的检测率,这可能有利于奶牛场的繁殖计划.
这一策略在环境热应力高 (THI高) 的时期尤其有利.

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