• When gilts or sows enter oestrus in their reproductive cycles (about 21 days long) they are ready to be bred.

    母猪母猪发情期大概是21,这她们的生理循环周期准备繁殖阶段

    youdao

  • When gilts or sows enter oestrus in their reproductive cycles (about 21 days long) they are ready to be bred.

    母猪母猪发情期大概是21,这她们的生理循环周期准备繁殖阶段

    youdao

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