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. 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。
Therefore, we should do our best to create necessary conditions and select practical education means with brand-new thoughts. 为此,一方面要创造必要的条件,另一方面要用全新的思维选择切实可行的教育手段。