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)%.
出处
《中国水产科学》
CAS
CSCD
1998年第2期73-78,共6页
Journal of Fishery Sciences of China
关键词
中华鳖
出血性肠道坏死
流行病学
危害
病因
Trionyx sinensis, Haemorrhagic intestinal necrosis, Epidemiology
