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he si tan qing nian mu niu chao pai qian luan chao zhuang kuang dui chao pai xiao guo de ying xiang
Author(s): 
Pages: 22-23
Year: Issue:  6
Journal: China Dairy Cattle

Keyword:  荷斯坦青年母牛超排卵巢;
Abstract: 对1 035头荷斯坦青年母牛的超排效果进行了分析统计.将超排前卵巢状况有记录的669头供体,分成7组;检查卵巢但没有记录的366头供体作为对照.对比7组之间超排效果.\'L+\'组的超排效果最好,与其他组比较,差异显著(P<0.05).除\'L+\'组外,在其他各组中,胚胎有效率的差异不显著(P>0.05).因此,在选择供体母牛用作超排时,特别是用性控精液配种的供体母牛,可以选用一侧卵巢有黄体,另一侧卵巢...
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