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近年来随着养殖业迅猛发展,规模不断扩大,病害问题也日益突出。过去,广泛使用抗生素,虽然能有效控制由微生物病原引起的病害,但抗生素本身也给养殖鱼类乃至人类带来潜在危害。为了使养殖业能够健康持续发展,保证鱼类食品的卫生安全,希望养殖业者慎用抗生素,走健康养殖之路。 一、使用抗生素存在的潜在危害 1.使微生物类病原体产生抗药性 第1次使用时用较小剂量的抗生素即可获得较明显的抑制微生物类病原体的效果,后因病原体产生了抗药性,再次使用时要加大剂量才能达到原来的效果。土霉素原为防治海水鱼类弧菌病的有效药物,但近年来效果很差。
In recent years, with the rapid development of aquaculture, the scale has been expanding, the disease problem is also increasingly prominent. In the past, the widespread use of antibiotics, although effective in controlling diseases caused by microbial pathogens, has also posed a potential hazard to farmed fish and even humans. In order to enable the aquaculture industry to develop healthily and sustainably and ensure the hygiene and safety of fish food, it is hoped that aquaculture operators should take the initiative to use antibiotics and take the road of healthy aquaculture. First, the potential harm of the use of antibiotics 1. To produce microbial resistance to pathogenic agents The first use of smaller doses of antibiotics can be more obvious inhibitory effect of microbial pathogens, after the pathogens developed resistance, once again Use to increase the dose to achieve the original effect. Oxytetracycline is an effective drug for the prevention and treatment of marine fish vibriosis, but the effect has been poor in recent years.