鱼病防治中给药方法不同,药物吸收的速度不同,体内外浓度也有区别,因而影响药物的作用。体外用药一般是主要发挥局部作用的给药法,体内用药除驱肠虫药外,主要是发挥吸收作用的给药法。目前常用的给药方法有: (一) 药浴法①挂袋(篓)法在食场周围悬挂盛药的袋或篓,形成一消毒区,当鱼来摄食时达到杀灭鱼体外病原体的目的。此法具有用药量少、方法简便、没有危险及副作用小等优点,但杀灭病原体不彻底。此法只适用于预防及疾病早期的治疗,同时鱼必须有到食场来吃食的习惯及要求。一般须连续挂三天,每个食场用漂白粉0.3kga或硫酸铜和硫酸亚铁合 Different methods of administration in the prevention and treatment of fish diseases, different rates of drug absorption, concentrations in vivo and in vitro are also different, thus affecting the role of drugs. In vitro drug use is generally the main local drug delivery method, in vivo drug addition anthelmintics, the main is to play the role of absorption of the drug. Currently commonly used methods of administration are: (A) bath method ① hanging bag (basket) method Hanging in the food field around the medicine bag or basket, forming a disinfection zone, when the fish come to kill the fish to kill pathogens purpose. This method has less medication, the method is simple, no danger and the advantages of small side effects, but kill the pathogens are not complete. This method is only suitable for the prevention and early treatment of diseases, at the same time the fish must have food habits and requirements to the food court. Generally need to hang for three days in a row, each food court with bleach 0.3kga or copper sulfate and ferrous sulfate