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为了解我国部分地区屠宰生猪旋毛虫和弓形虫感染情况,2019年在广东（5个）、山东（4个）、云南（6个）等省份的15个大型、中小型生猪屠宰场,采集猪膈肌样品315份,用PCR方法进行旋毛虫和弓形虫病原学检测;在以上3省15个大型、中小型生猪屠宰场（每省5个）,采集血清样品254份,用ELISA方法进行旋毛虫和弓形虫血清学检测。结果显示：经PCR检测,采样地区所有膈肌样品均为旋毛虫阴性,仅在云南省120份膈肌样品中检出1份弓形虫阳性;经ELISA检测,采样地区血清样品的旋毛虫和弓形虫抗体阳性率分别为1.97%和2.36%,不同省份的阳性率分布不一致,中小型屠宰场阳性率均高于大型屠宰场。结果表明,广东、山东、云南等省份屠宰生猪的旋毛虫和弓形虫携带率极低,基本可以保证猪肉的产品安全;部分地区屠宰生猪存在一定的弓形虫感染抗体,尤其是中小型屠宰场,表明此类猪群需要加强饲养环节的弓形虫感染控制。本研究为保障猪肉食品安全及饲养环节的猪旋毛虫和弓形虫感染控制提供了依据和指导。 相似文献
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2012—2013年我国部分地区猪伪狂犬病流行病学调查 总被引：4，自引：0，他引：4
[目的]了解我国主要生猪养殖地区猪群中猪伪狂犬病毒感染情况。[方法]分别采用PCR和gE-ELISA检测方法,对2012-2013年采集/送检的1127份发病猪群组织样品、14801份猪血清样品进行了病原学、血清学检测。[结果]检出PRV野毒感染病原学样品98份,总体检出率8.69%,猪场的PCR检出率为22.49%;共检测14801份血清样品,野毒感染抗体阳性样品2388份,总体阳性率为16.13%,场的阳性率为44.02%。对检测数据进行分类统计,发现华东、华中等生猪主产区猪群中均存在不同程度的PRV野毒感染,感染率呈逐年上升趋势;分析不同日龄猪群的野毒感染抗体检测数据,发现种猪的感染率较高,其次是哺乳仔猪、育肥猪。[结论]猪伪狂犬病在我国主要生猪养殖地区仍不同程度存在,提示应进一步提升猪伪狂犬病的免疫预防水平,定期进行病原学、血清学检测,做好综合防治工作。 相似文献
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为了解青藏高原地区牦牛牛病毒性腹泻病毒(BVDV)和牛肠道病毒(BEV)的感染情况,应用RT-PCR对青藏高原地区(西藏、青海、四川和云南)共计222份出现腹泻症状的牦牛粪便样品开展了分子流行病学调查。从222份样品中,检出44份BVDV阳性,BVDV阳性检出率为20%(95%CI:15.5%~25.6%);检出65份BEV阳性,BEV阳性检出率为29.4%(95%CI:24.1%~35.0%);BVDV/BEV混合感染阳性率为4.8%(95%CI:2.5%~8.0%)。结果表明,所有被检地区牦牛均存在BVDV和BEV感染,且部分地区感染较为严重,有混合感染的情况。研究结果旨在为青藏地区牦牛腹泻的综合防控措施提供基本数据,丰富BVDV和BEV的分子流行病学调查资料。 相似文献
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目的为调查研究20世纪90年代以来南阳地区旋毛虫发病现状,感染率,流行动态,流行病学特点。方法自2003年1月-2005年12月,应用河南省农科院生物技术研究所研制开发的具有特异、敏感、快速、简单、易存、实惠等优点的旋毛虫快速诊断试纸条,对南阳地区4个平原县(市、区)(宛城区、卧龙区、新野县、邓州市)和1个山区县内乡3 788头猪进行血清学检测和屠宰猪肌肉镜检,对南阳市郊区狗、猫、鼠和食肉昆虫四种动物共计132只分别进行血清学检测和肌肉目测镜检,将旋毛虫阳性的狗、猫、鼠和食肉昆虫分别人工喂猪做感染试验,并进行猪肉泔水、狗肉泔水、牛、羊肉泔水饲喂试验检测泔水中旋毛虫感染程度。结果南阳地区猪旋毛虫血清学阳性率为2.93%,目测镜检的阳性率为2%;狗血清学阳性率为12.5%,镜检阳性率12.5%;猫血清学阳性率50%,镜检阳性率为33.33%;鼠血清学阳性率为10.3%,镜检阳性率为5.88%;食肉昆虫血清学阳性率为4.76%。感染试验中,猪受到感染的情况分别为33.3%、66.7%、100%和0。测定草食兽未发现有旋毛虫感染。泔水试验结果:狗肉泔水感染率为10%,猪肉泔水感染率为50%,牛、羊肉泔水未发生感染。结论市区比县发病率低,猪肉与狗肉泔水喂猪是当地猪感染旋毛虫的主要来源,南阳地区的保虫宿主主要是猪,山区猪旋毛虫超过平原地区,应用旋毛虫快速诊断试纸条检测旋毛虫比传统的目测镜检检测高出近1个百分点。 相似文献
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为了解贵州省羊群布鲁氏菌感染情况，采用系统综述和Meta分析方法，对既往已发表文献的感染数据进行汇总分析。共纳入24篇中文文献进行定量分析，涉及506 843份样品。结果显示：贵州省羊群布鲁氏菌个体阳性率为2.0%（95%CI：1.5%~2.6%），群阳性率为6.0%（95%CI：3.0%~9.0%）。从地区看，黔东南州个体阳性率最高，为4.7%（95%CI：2.4%~6.9%），其次是毕节和铜仁；以5年为1个阶段，2001—2005年个体阳性率为2.2%（95%CI：0~6.2%），2005年后有所下降，2016—2020年维持在1.6%；从养殖场类型来看，商品场个体阳性率最高，其次是散养户和种畜场。研究表明，贵州省羊群布病防控情况不容乐观。建议开展“检疫、监测、消毒、扑杀、宣传”相结合的综合性防控措施，稳步推进当地布病净化工作。 相似文献
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为了解国家级固定监测点猪群的伪狂犬病流行情况,2015—2017年采用分层随机抽样方法,对安徽省12个固定监测点猪群进行了猪伪狂犬病个体流行率估计,使用猪伪狂犬病病毒gE-ELISA抗体检测试剂盒检测血清样品。结果显示：所调查的12个监测点猪群的个体真实流行率从2015年的33.6%（95%CI：27.8%~39.5%）降为2016年的1.1%（95%CI：0~4.0%）,2017年小幅回升为6.9%（95%CI：3.0%~10.7%）;12个监测点中,有8个检出猪伪狂犬病感染抗体,最高的个体表观流行率为77.0%（95%CI：62.9%~91.2%）;感染猪场中,种猪群的个体阳性率高于其他猪群;2015年存栏量≥1 000头猪场的个体阳性率较高,感染风险是＜1 000头猪场的2.0倍（95%CI：1.0~3.8）,而2017年却相反,存栏量≥1 000头猪场的感染风险是＜1 000头猪场的20%（95%CI：0.1~0.5）。结果表明：安徽省定点监测猪群的伪狂犬病感染面依然较广,但流行程度呈下降趋势;种猪群和小规模饲养猪群是当前猪伪狂犬病防控的重点。 相似文献
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目的了解同仁县隆务镇猪肉旋毛虫感染情况。方法采集市场销售的猪肉膈肌脚393份，常规压片镜检，计数包囊。结果在检测的样品中，阳性18份，猪旋毛虫感染率为4．58％。结论同仁县隆务镇猪肉旋毛虫感染率较高，需要立即加强猪旋毛虫病防治工作。 相似文献
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为了解J亚群禽白血病病毒（ALV-J）在山东省枣庄市鸡场的流行情况，2019—2020年在枣庄市39家鸡场采集1 174份血清样品，采用酶联免疫吸附试验（ELISA）进行ALV-J抗体检测。结果显示：39家鸡场中有27家检出阳性，群体阳性率为69.2%（95%CI：56.2%~85.1%）；1 174份鸡血清样品中，有200份为阳性，个体阳性率为17.0%（95%CI：15.2%~19.6%）。不同区域间个体阳性率，经卡方检验差异显著（χ2=27.48、P＜0.01）；群体阳性率，经fishers确切检验，差异不显著（P＞0.05）。2019年个体阳性率为12.4%（95%CI：10.0%~15.3%）、2020年为21.8%（95%CI：18.9%~25.7%），经卡方检验差异显著（χ2=18.51、P＜0.01）；2019年群体阳性率为65.0%（95%CI：45.4%~87.3%），2020年为73.7%（95%CI：55.5%~94.9%），经fishers确切检验，群体阳性率差异不显著（P＞0.05）。结果表明，枣庄市鸡场普遍存在ALV-J感染，感染率较高。建议继续深入推进禽白血病净化工作，加强引种管理，严把疫苗免疫关，做好综合防控。 相似文献
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Owen J Slocombe D McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1986,27(9):324-328
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.
相似文献12.
Slocombe JO McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1989,30(6):504-508
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%). 相似文献
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Slocombe JO McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1985,26(10):323-327
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.
相似文献14.
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Slocombe JO Villeneuve A 《The Canadian veterinary journal. La revue veterinaire canadienne》1993,34(10):630-633
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. 相似文献
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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.
相似文献17.
Slocombe JO McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1988,29(8):641-646
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%). 相似文献
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Owen J Slocombe D McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1987,28(8):491-495
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.
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Slocombe JO McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1984,25(9):347-350
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.
相似文献