摘要
四川省成都市、合川县、乐至县猪细颈囊尾蚴的感染率为36.30—82.75％,感染强度为1—264。感染初期蚴虫主要寄生于肝脏,后期主要寄生于网膜;寄生于犬体的细颈囊尾蚴的成虫——泡状带绦虫,感染率为25—38.8％(屠场附近),犬人工感染细颈囊尾蚴后,在第62—64天开始排出成熟孕节,排出孕节的动态呈波浪式并有明显的季节性,以3—5月和9—11月为高峰,严冬和盛夏很少排出;调查的55头阳性猪,因细颈囊尾蚴寄生,平均每头减少肉重0.35kg,足油0.5kg,我省每年出栏生猪约6千万头,按30％感染率计,每年全省将损失2千多万元人氏币。该研究为防治猪细颈囊尾蚴病(感染)提供了科学依据。
In Chengdu city, Heehuan and Lezhi county of Sichuan province, the infection rates of Cysticereosis tenuicollis in swine were 36.30％ to 82 75%, and the intensity of infection were 1 to 264. The larvae parasitized mainly in the livers of pigs in initial stage of infection and then parasitized mainly in the omenta in the later stage. The infection rates of the adult worm of Cysticercosis tenuicollis——Taenia hydatigena which parasitized in the body of dogs near the slaughterhous, were 25 0% to 38 8%. The dogs, infected with Cysticercosis tenuicollis artificially, began to excrete the mature gravid fragments from 62 to 64 days after infection, and the excretion of the gravid fragments showed the undulate and obvious seasonal change, they reached the excreting peaks in March to May and September to Novenber and decreased in hard Winter and midsummer. Because of the parasitism of Cystieercosis tenuicollis, each of 55 positive pigs that we investigated had reduced the 0 35 kg of meat and 0.5kg of fat on average,counting according to the average infection rate of 30% in total output of 60 million pigs every year in our province, We would lose more than 20 million yuan Renminbi(RMB)every yeaar. This study provioded some sciencific bases for prevention and treatment of the disease caused by Cysticercosis tenuicollis in swine.
关键词
猪细颈囊尾蚴
流行病学
四川省
Cysticereosis Tenuicollis, Swine, Epidemiology. Sichuan province.
