大通县绵羊住肉孢子虫感染情况调查

目的为了解大通县绵羊住肉孢子虫病的感染情况。方法2005年07月至2006年07月期间,对大通县屠宰场的羊胴体运用病原总调查方法,进行了住肉孢子虫感染情况的调查。结果被检查的200只绵羊胴体中,检查出住肉孢子虫的119只,感染率为59.5%。每0.1 g肌肉中,感染强度在1～130之间,平均感染强度7.8。从不同部位的感染来看,膈肌、心肌、食道肌、咽喉肌、半膜肌的感染率分别为:85.8%、68.5%、51.5%、22.5%、70.5%。膈肌中住肉孢子虫主要以长梭形为主,占被检出的34%;心肌中以椭圆为主,占被检出的39%;食道肌中以长纺锤形为主,占被检出的48.5%;咽喉肌中以椭圆形为主,占被检出的60%;半膜肌中以长纺锤形为主,其虫体清晰,占被检出的65.2%。结论食道肌和膈肌感染强度较高,对绵羊进行检疫时需首先检查这两个部位     

青海省西宁市屠宰性畜住肉孢子虫病的调查

本文报道了西宁市屠宰场中猪、牦牛和绵羊胴体住肉孢子虫的感染情况，采用病原学调查方法，检查绵羊５１１只，牦牛２０９头，猪５１２头，住肉孢子虫感染率分别为７３．５８％、６３．６４％、５１．１７％。经测量，牦牛住肉孢子虫为８８０．１０±６６５８．８２μｍ× ９８．２１±５３．２０μｍ，猪住肉孢子虫为６６５．１５±３４９．４３μｍ×１３３．６０±３５．９８μｍ，绵羊住肉孢子虫为５０３．７５±４１２．４４μｍ×７９．６９±４５．７８μｍ。结果表明，青海家畜存在住肉孢子虫病的严重流行，威胁着人群的健康。     

乌兰县羊住肉孢子虫感染情况调查

住肉孢子虫属孢子纲、住肉孢子虫属。这个属的寄生虫寄生于家畜 (马、黄牛、水牛、牦牛、绵羊、山羊、猪 )、鼠类、鸟类、爬虫类和鱼类等多种动物、偶尔寄生于人。李承钰等 (１９９１)曾对西宁地区农贸市场上销售的羊胴体肉孢子虫病感染情况进行过报道。我于２０００年对乌兰县定点屠宰场从三乡收购的菜羊进行了住肉孢子虫感染情况的抽样调查。１材料和方法１．１调查对象每乡抽检３６只 ,每只胴体采取膈肌、食道肌、心肌各１０ｇ。１．２调查方法每份肉样弃去包膜后 ,肉眼仔细观察 ,然后仔细随机称取各部位肌肉０．１ｇ,按肌纤维方向剪碎 ,…     

青海省都兰县羊胴体肉孢子虫病检验报告

通过检验,在393只被检羊胴体中,检出肉孢子虫阳性胴体201只,阳性率51.15%(201/393),每0.1g肉样的虫体感染范围0~234个,平均感染强度8.74个。     

青海省海西地区山羊和绵羊犬新孢子虫病的血清学调查

用犬新孢子虫的重组蛋白GST-NcSAG1t作为ELISA诊断抗原,进行了青海省海西地区山羊和绵羊群中犬新孢子虫病的血清学调查。经过对所收集的120份绵羊血清和531份山羊血清抗体的检测,共检出绵羊阳性血清10份,山羊阳性血清36份,其阳性率分别为8.33%和6.78%。说明青海省海西地区的绵羊和山羊群中存在犬新孢子虫的感染。     

贵南县过马营镇绵羊住肉孢子虫感染情况调查

住肉孢子虫病是由孢子属的羊住肉孢子虫感染而引起的一种人畜共患病,笔者在市场检疫工作中对该镇定点屠宰场的胴体羊进行了住肉孢子虫感染情况的抽样调查,以便能为今后的防治工作和肉品卫生检疫检验提供一些依据。1材料和方法1.1调查对象检查屠宰户当日上市新鲜绵羊胴体50只,每     

青海省海西地区山羊和绵羊犬新孢子虫病的血清学调查

用犬新孢子虫的重组蛋白GST—NcSAG1t作为ELISA诊断抗原,进行了青海省海西地区山羊和绵羊群中犬新孢子虫病的血清学调查。经过对所收集的120份绵羊血清和531份山羊血清抗体的检测,共检出绵羊阳性血清10份,山羊阳性血清36份,其阳性率分别为8．33％和6．78oA。说明青海省海西地区的绵羊和山羊群中存在犬新孢子虫的感染。     

加利西亚地区牛、绵羊和猪的小隐孢子虫感染

首次对西班牙加利西亚地区牛、绵羊和猪的小隐孢子虫感染情况进行了检测。在69只受检绵羊中检出了有1只绵羊受到感染。大多数隐孢子虫是从幼龄有腹泻症状的家畜中发现的,同时对无临床症状的成年牛和猪的感染情况做了检测。     

川口镇农贸市场绵羊肉孢子虫调查

1990年5月,我们采用膈肌压片镜检法,抽样调查了民和县川口镇农贸市场屠宰出售的36只绵羊胴体的住肉孢子虫感染情况。检查结果:绵羊住肉孢子虫感染率为80.56％,感染强度140(5—460)条/克肉样。镜下观察虫体呈椭圆形或长纺锤形,     

山羊住肉孢子虫的感染与免疫试验

狗能传播住肉孢子虫,并引起牛、绵羊、猪、山羊及骡鹿等产生急性致死性住肉孢子虫病(Fayerand Johoson,1973;Manday ef al.,1975;Roller ef al.,1977;Erber et a.,1978;Fischer,1979;Dubey et al.,1981,1982),在山羊是否引起急性住肉孢子虫病与接种剂量有关,用低剂量接种的结果,产生无临床症状的感染,若接种100000个或更多的孢子囊就产生临床症状。在山羊能产生持久的免疫力以抵抗重新感染的文献报告只有一篇(Dubey,1981),在这篇文献中山羊接种1000个孢子囊后无症状产生,于二个月后攻毒具有保护力。本文继续研究山羊住肉孢子虫病获得持久免疫保护力的试验。     

Heartworm in dogs in Canada in 1984

In late December 1984, 1853 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1984 and 35% of them responded. Veterinarians reported that 97,794 dogs were blood-tested to check for microfilariae and 1417 dogs (1.45% of those tested) were found with heartworm. Another 34 dogs were amicrofilaremic, but were diagnosed as having heartworm disease, to give the total number diagnosed in 1984 as 1451 (1.48%). Heartworm was reported from all provinces except Prince Edward Island and Newfoundland but most (1310) of the cases were in Ontario. In Quebec, 126 cases were reported mostly from west of Montreal.

Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 27% of the cases were observed with clinical signs of heartworm disease and 72% had a history of not having left Canada. Southwestern Ontario continued to be the primary focus of the infection.

     

Heartworm in dogs in Canada in 1983

In late December 1983, 2 800 veterinarians across Canada were sent a questionnaire in order to assess the status of heartworm disease in Canada in 1983 and 26% of them responded. Veterinarians reported that 59 504 dogs were blood-tested to check for microfilariae and 771 dogs (1.30% of those tested) were found with Dirofilaria immitis. Heartworm disease was diagnosed in all provinces except New Brunswick and Newfoundland but most (733) of the cases were in Ontario.

Heartworm disease was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 31% of the cases were observed with clinical signs of heartworm disease and 64% had a history of not having left Canada. Southwestern Ontario continues to be the focus of the infection and most of the dogs there had not left the province previously.

     

Heartworm in dogs in Canada in 1991

In late November 1991, 1883 clinics in Canada were sent a questionnaire to assess the status of Dirofilaria immitis in dogs in 1991 and there was a 60.0% response. There were 344,031 dogs tested for heart-worm (HW), 627 were found infected and the prevalence of HW infection was 0.18%. There were 417 dogs with HW in Ontario, 116 in Manitoba, 38 in Quebec, 53 in British Columbia, three in Alberta, and one in Nova Scotia. In British Columbia, all of the infected dogs but one were from the Okanagan valley which, as from 1991, is a new focus of infection in Canada. Most dogs with HW had not been on preventive medication in 1990, and the prevalence among dogs tested and unprotected was 0.59%. That prevalence was considerably higher in endemic areas. Companion dogs, over three years of age and maintained primarily outdoors in rural areas, were most frequently infected. One cat was diagnosed with D. immitis and 33 dogs had Dipetalonema reconditium.     

Heartworm in dogs in Canada in 1985

In late December 1985, 1485 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1985 and 44% of them responded. Veterinarians reported that 137,300 dogs were blood-tested to check for microfilariae and 1210 dogs were found with heartworm. Another 36 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number diagnosed in 1985 as 1247 (0.91%).

Heartworm was reported from all provinces except Prince Edward Island, Newfoundland and Saskatchewan but most (1126) of the cases were in Ontario. Southwestern Ontario continued to be the primary focus of the infection in Canada. From Quebec, 91 cases were reported mostly from and around Montreal. From Manitoba, 19 cases were reported from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 28% of the cases were observed with clinical signs of heartworm disease and 78% had a history of not having left Canada.

     

Heartworm in dogs in Canada in 1988

In late November 1988, 1581 small and mixed animal clinics and institutional veterinarians across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1988, and 46% of them responded. Veterinarians reported that 181,577 dogs were blood-tested for heartworm disease and 367 dogs were found with D. immitis microfilariae. Another 60 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1988 as 441 (0.24%).     

Heartworm in dogs in Canada in 1989

In late November 1989, 1732 clinics and institutional veterinarians were sent a questionnaire to assess the status of Dirofilaria immitis, and 51.7% responded. Of 247,716 dogs tested, 394 had D. immitis microfilariae and 51 were amicrofilaremic for a total of 445 cases and heartworm prevalence of 0.17%. Most (408) of these dogs had no preventive medication and the prevalence among dogs tested and unprotected was 1.01%. That prevalence was considerably higher in endemic areas. Thirty-seven dogs with heartworm had preventive medication. Heartworm was most frequent in companion dogs over three years of age maintained outdoors in rural areas. About 75% of the cases had never left Canada, 26% had clinical signs and 125 were not treated.

Heartworm was reported from British Columbia, Manitoba, Ontario, Quebec, Nova Scotia and Newfoundland, but 383 cases were in Ontario. South-western Ontario was the primary focus of infection. There were 33 cases in Quebec and 24 in Manitoba, mainly found in and around Metropolitan Montreal and Winnipeg respectively.

     

Heartworm in dogs in Canada in 1987

In late November 1987, 1246 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1987, and 50% of them responded. Veterinarians reported that 165,428 dogs were blood tested for heartworm disease and 511 dogs were found with D. immitis microfilariae. Another 78 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1987 as 589 (0.35%).     

Heartworm in dogs in Canada in 1986

In late December 1986, 1224 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1986; 46% of them responded. Veterinarians reported that 150,989 dogs were blood-tested for microfilariae and 869 dogs were found with heartworm. Another 65 dogs were amicrofilaremic but diagnosed with heartworm disease and one was found with heartworm at necropsy to give the total number diagnosed in 1986 as 935 (0.62%).

Heartworm was reported from Manitoba, New Brunswick, Ontario and Quebec, but most (810) of the cases were from Ontario. South-western Ontario continued to be the primary focus of the infection in Canada. There were 103 cases reported from Quebec, mostly from and around Montreal, and 21 cases from Manitoba, from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 33% of the cases were observed with clinical signs of heartworm disease and 81% had a history of not having left Canada.