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傳統的牲畜養(yang)殖(zhi)主(zhu)要是農戶散養(yang)為主(zhu)，隨著(zhu)工(gong)(gong)業的進展和食品安全(quan)(quan)的需(xu)要，現代(dai)的牲畜養(yang)殖(zhi)逐漸在(zai)走(zou)上現代(dai)化、規(gui)模化、自動(dong)化、可追溯的道(dao)路。以生豬養(yang)豬為例(li)：現代(dai)養(yang)豬生產的工(gong)(gong)藝流程，采(cai)用分段(duan)飼養(yang)、全(quan)(quan)進全(quan)(quan)出飼養(yang)工(gong)(gong)藝。六段(duan)飼養(yang)工(gong)(gong)藝流程：空懷期、配(pei)種期、妊娠(shen)期、哺乳(ru)期、仔…