doc 关键词： 湖羊；排卵数； BMP2； BMP4； BMP6； BMP7；mRNA表达 [gap=2100]Key words: hu sheep; ovulation number; BMP2; BMP4; BMP6; BMP7; mRNA expression ...
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During the actual ovulation period, there are a number of telltale signs.
在真正的排卵期，有一些迹象是你可以注意到的。
By employing the techniques of super-ovulation, artificial insemination, and embryo transfer, farmers can more than triple the number of offspring produced by a single cow per year.
通过采用增多排卵、人工授精和胚胎移植技术，农民可以使每母牛产崽数增加两倍多。
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