中华鳖出血性肠道坏死症流行病学  

Epidemiology on haemorrhagicIntestinal necrosis of soft-shelled turtle

作　　者：杨先乐[1] 周剑光[1] 柯福恩[2] 艾晓辉[2] 贺路[2] 

机构地区：[1]农业部水产增养殖生态重点开放实验室 [2]中国水产科学研究院长江水产研究所

出　　处：《中国水产科学》1998年第2期73-78,共6页Journal of Fishery Sciences of China

摘　　要：中华鳖出血性肠道坏死症是近两年来发生且危害性较大的一种新的流行病，主要危害成鳖、亲鳖和１００～２００ｇ的幼鳖。肠道糜烂出血，胃肠粘膜组织坏死是该病的主要症状。养殖区流行该病的主要流行季节为５～７月，６月是发病高峰月，占发病总例数的３９．８％；水温２５～３０℃时该病较易发生。该病潜伏期较长，发生期（１４．３±６．９）ｄ，暴发期（１４．７±６．２）ｄ。对湖北省９５个养殖场（户）的调查结果表明，该病发病率为４３．２％，平均死亡率（４４．５±２５．６）％，日平均死亡率（６．９±６．５）％。The haemorrhagic intestinal necrosis of soft-shelled turtle,Trionyx sinensis is a newly occurring epidemic disease in the recent two years, which is harmful to the adult and parental turtles as well as the juvenile of 100～200g body weight.The main symptoms are ulcer,haemorrhage and mucous membrane necrosis in the gastrointestine.The main epidemic season is from May to July,with June as its pick level month(accounting for 39.8% of total cases).When the water temperatur are in the range of 25～30℃,the disease is suitable to epidemic.The latent period is long.The occurring period is (14.3±6.9)d and the outbreaking (14.7±6.2)d.The investigation of 95 turtle farms in Hubei province shows that the incidence of the disease is 43.2%,the average mortality rate is (44.5±25.6)%,and the average daily mortality rate is (6.9±6.5)%.

关 键 词：中华鳖 出血性肠道坏死 流行病学 危害 病因 

分 类 号：S947.12[农业科学—水产养殖]