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【目的】探讨3种不同药物处理方式对台湾棘带吸虫引起的鲤鱼幼鱼急性鱼鳃传染病(开放性鳃病)的防治效果。【方法】在试验初期,将1620条鲤鱼幼鱼(70日龄)鱼鳃自然感染台湾棘带吸虫,随后分成4组,分别采用CuSO4、福尔马林和吡喹酮不同方式处理6周,与对照(自然喂食、不使用任何化学药剂)比较防治鲤鱼幼鱼急性鳃传染病的效果。【结果】感染台湾棘带吸虫的幼鱼生长缓慢,其身长和体重增长均较慢。施药后,幼鱼台湾棘带吸虫后期囊幼虫感染强度减少。在每千克饲料中分别添加50和75mg吡喹酮喂食幼鱼5d,可以杀死鱼鳃中所有的台湾棘带吸虫后期囊幼虫,且鱼鳃恢复正常;而使用25mg吡喹酮,仅有35%的后期囊幼虫死亡。所有不同浓度CuSO4处理(0.3、0.4和0.5mg/kg冲洗浸泡24h及以3.0、4.0和5.0mg/kg冲洗浸泡10m)和福尔马林处理(20、25和30mg/kg冲洗浸泡及200、250和300mg/kg短时间冲洗浸泡)均不能杀死台湾棘带吸虫后期囊幼虫。【结论】经普通化学药剂CuSO4或福尔马林冲洗浸泡,不能防治由台湾棘带吸虫后期囊幼虫引起的鲤鱼开放性鳃病,但50～75mg吡喹酮/kg饲料可以在5d内治疗该病。
【Objective】 To explore the preventive and therapeutic effects of three different drug treatments on the acute gill infection (open gill disease) of juvenile common carp (Cyprinus carpio) caused by Trichoplusia nipponica in Taiwan. 【Method】 In the early stage of the experiment, 1620 carps (70 days old) were naturally infected with S. gonorrhoeae and then divided into 4 groups. They were treated with CuSO4, formalin and praziquantel in different ways for 6 weeks, Compared with the control (natural feeding, without any chemical agents) to control carp juvenile acute gill infection. 【Result】 The juveniles infected with Trichoplusia niuni were slow to grow and their body length and weight gain were slower. After application, the juvenile larvae of Taiwan larvae later larvae larvae reduce the intensity of infection. The addition of 50 and 75 mg of praziquantel to juvenile fish for 5 d per kg of feed, killed all larvae of late stage larvae of the gills in the gills of the gills and returned to normal gill gills; whereas with 25 mg of praziquantel, only 35 % Of late caecal larvae die. All CuSO4 treatments (0.3, 0.4 and 0.5 mg / kg rinse for 24 h and 10, 4, and 5.0 mg / kg rinse for 10 m) and formalin treatment (20, 25 and 30 mg / 250 and 300 mg / kg for a short time soaking) did not kill the late stage larvae of T. gondii in Taiwan. [Conclusion] The open gill disease of carp caused by the late larvae of C. elegans could not be controlled by soaking with common chemical agent CuSO4 or formalin, but 50 ~ 75 mg praziquantel / kg diet could be treated within 5 days disease.