气温对夏洛来牛精液品质的影响

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为了研究气温对夏洛来牛精液品质的影响,统计分析了2002、2003年1~5月份的气温及夏洛来牛精液品质的变化.结果如下:两年中1~3月份同期相比,月平均气温差异极显著(P<0.01),4~5月份同期相比,差异不显著(P>0.05);1~5月份的射精量同期相比,差异不显著(P>0.05);一次射出的精子总数同期相比,1月份差异不显著(P>0.05),2~5月份差异极显著(P<0.01);原精活力同期相比,1月份差异不显著(P>0.05),2,3,5月同期相比,差异显著(P
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