It was found, in one livestock elite station of Xuzhou, the ejaculum quality,eros and performance of some adult bulls were poor in recent years.
近几年来，徐州市某
种站饲养的部分成年公牛表现常年
液品质不，性欲差，生产能力低下。
液;一次射出的液It was found, in one livestock elite station of Xuzhou, the ejaculum quality,eros and performance of some adult bulls were poor in recent years.
近几年来，徐州市某种站饲养的部分成年公牛表现常年液品质不，性欲差，生产能力低下。
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