This order of priority may result in breeding animals failing to maintain themselves . 這個優先的順序,可能致使種畜不能滿足維持能量需要。
Code of quarantine technology for the movement of breeding livestock and poultry 種畜禽調運檢疫技術規范
Article 15 any animal farm should exterminate animal epidemics in time . stud stock and breeding poultry shall be kept healthy up to the standards set by the state 第十五條動物飼養場應當及時撲滅動物疫病。種畜、種禽應當達到國家規定的健康合格標準。
In a breeder farm or privately - owned stock farm , the constitution of female livestock is believed to be a significant factor to expand the breeder business at larger size 在一個種畜場或自繁自育畜牧場,能否發展壯大,關鍵取決于母畜體質狀況,母畜體質欠佳,直接影響產仔數量和發展規模。
Foot and mouth disease ( fmd ) is a highly contagious disease of cloven - hoofed animals , notably cattle , pigs , and sheep . presence of fmd in a country severely limits its trade in animals and animals products due to international regulations designed to limit spread of the disease 口蹄疫是多種偶蹄動物(包括家畜和野生動物)的高度接觸性病毒傳染病,被國際獸疫局列為a類傳染病之首,其感染動物后的主要危害是使家畜生產力下降和種畜經濟價值喪失,對畜產品出口貿易造成嚴重影響。