如何安全使用兽药
Animal Husbandry and Feed Science（2007）
Abstract
<正>1把预防为主作为治疗的前提畜禽疾病中,尤其是传染病发生期间重治疗轻预防的现象经常存在。有些传染病如炭疽、肠毒血症等必须提前进行预防注射,而不是直接治疗。针对当地常发的畜禽疾病的
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