The effect of the presence of a boar on the attainment of puberty in gilts.
The effect of the presence of a boar on the attainment of puberty in gilts.
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公猪的存在对后备母猪进入青春期的影响。
DOI：
10.1530/jrf.0.0230435
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发表时间：
1970
期刊：
影响因子：
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通讯作者：
D. Cole
中科院分区：
文献类型：
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作者：
P. H. Brooks;D. Cole
总结。165日龄时，选取年龄、体重和种数相近的后备母猪，分为4组处理。在整个实验过程中，将一组后备母猪与公猪隔离。在实验期间，这一组达到青春期的动物比其他引入公猪的组要少。在165日龄或190日龄时将公猪引入后备母猪，可导致发情活性下降。在第165天，当轮流使用公猪进行测试时，可以获得相当大的发情同步，但当只使用一只公猪时，效果就不那么明显了。
Summary. Groups of gilts of similar age, weight and breeding were allocated at 165 days of age to four treatments. One group of gilts was isolated from boars throughout the experiment. Fewer animals reached puberty during the experiment in this group than in the other groups where boars were introduced. Introduction of a boar to gilts at 165 or 190 days of age resulted in precipitation of oestrous activity. At 165 days, considerable synchrony of oestrus was obtained when there was a rotation of the boars used for testing, but the effect was much less marked when only one boar was used.