【摘要】 外部行为特征观察法是母牛发情鉴定中最常用的方法,辅助行为特征和生理特征对母牛的发情鉴定也非常重要。应用发情特征综合评分可提高母牛发情鉴定率,评分较高的发情牛受胎率也较高。同时改善周围环境、加强泌乳牛体质等有助于提高母牛的发情鉴定率。本文从上述几方面对母牛的发情特征与发情鉴定技术进行阐述,为生产实践提供一定的依据。更多还原

【Abstract】 Visual observation of oestrous behavior is the best practical means to detect cows in heat. Additional symptoms of oestrus and physiological characteristics are useful guidance for oestrus detection too. Use of oestrus detection score results in a high detection rate, and the cows with greater points had a high conception rate. Some factors such as comfortable surroundings and healthy conditions of lactating cow can improve the determination efficiency.更多还原