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为了解广西玉林市规模化猪场猪繁殖与呼吸综合征病毒（PRRSV）感染情况及其与猪瘟病毒（CSFV）、猪圆环病毒2型（PCV2）和猪伪狂犬病病毒（PRV）混合感染情况,采用RT-PCR/PCR方法,对2016—2018年采集自玉林市存栏母猪300头以上规模化猪场的661份临床健康猪血清样本和896份表现呼吸道症状和繁殖障碍发病猪只的组织样本,进行PRRSV病原检测,并对检出的PRRSV病原阳性样本进行CSFV、PCV2、PRV病原检测,并对结果进行统计分析。结果显示：2016—2018年收集的血清样本中,PRRSV病原阳性率分别为6.86%、19.33%和10.17%,场阳性率分别为25.00%、46.67%和40.00%;PRRSV血清阳性样本混合感染率分别为52.38%、65.22%和62.50%,以与PCV2、PRV混合感染为主。2016—2018年收集的病料组织样本中,PRRSV病原检出率分别为46.38%、48.24%和48.81%,场阳性率分别为42.11%、35.37%、37.10%;PRRSV病料阳性样本混合感染率分别为50.00%、52.99%和52.35%,同样以与PCV2、PRV混合感染为主。结果表明,广西玉林市规模猪场中PRRSV流行广泛且呈加重趋势,与PCV2和PRV等病原的混合感染较严重。结果提示,玉林市规模猪场应制定科学的免疫程序,加强这些疫病的综合防控。 相似文献
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《动物医学进展》2021,42(2)
为了解猪口腔液应用于猪场病原监测的效果及主要疫病病毒的感染分布情况,分4个季度在武汉市6个生猪养殖集中的行政区(县)的不同类型猪场,以栏舍为单位采集猪口腔液样品,通过荧光定量PCR和常规PCR检测猪瘟病毒(CSFV)、口蹄疫病毒(FMDV)、猪繁殖与呼吸综合征病毒(PRRSV)、高致病性猪繁殖与呼吸综合征病毒(HP-PRRSV)、猪圆环病毒1型(PCV1)和2型(PCV2)、猪伪狂犬病病毒(PRV)。检测结果显示,猪口腔液样品可检出CSFV、FMDV、PRRSV、HP-PRRSV、PCV1和PCV2,阳性率分别为0.31%、3.69%、7.38%、0.92%、13.85%和25.54%,PRV未检出;FMDV、PRRSV、PCV1、PCV2在全年4个季度均有检出;商品代养殖场、种猪场检出的病毒种类比养殖小区、散养户多;采样的6个区均能检出PCV1和PCV2,尤其是具有致病性的PCV2的检出率更高。结果表明,猪口腔液可用于检测CSFV、FMDV、PRRSV和PCV,采集猪场存在普遍的PCV感染,以栏舍为单位采集猪口腔液用于猪场病原监测具备可行性。 相似文献
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《黑龙江畜牧兽医》2019,(23)
为了确定山东省莱西市某猪场送检病猪的发病原因,并调查猪群主要疫病抗体水平以便为猪场疫病防控提供科学参考依据,试验采集送检病猪病料,综合运用临床观察、病理剖检、细菌分离鉴定和病毒核酸检测等技术进行确诊;并对分离菌进行药敏试验;使用ELISA检测试剂盒对猪群的猪圆环病毒2型(PCV-2)、猪蓝耳病毒(PRRSV)、猪瘟病毒(CSFV)和猪伪狂犬病病毒(PRV)4种主要病原进行检测,分析抗体水平。结果表明:送检病料经TSA培养基分离培养可见针尖状菌落,革兰氏染色镜检为阴性杆菌,生化试验鉴定为副猪嗜血杆菌;该分离细菌对大观霉素高度敏感,对头孢噻肟极度敏感;猪群中PRRSV和PCV-2为阳性,未检测出其他病毒;同场猪群的猪瘟抗体水平偏低需加强免疫,猪蓝耳病抗体水平不稳定,存在野毒感染风险。说明送检病例为PRRSV、PCV-2和副猪嗜血杆菌的混合感染,同场猪群需注意加强猪瘟免疫和猪蓝耳病抗体监测。 相似文献
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为了解广西地区规模猪场猪瘟病毒（CSFV）、猪繁殖与呼吸综合征病毒（PRRSV）、猪圆环病毒2型（PCV2）、猪伪狂犬病病毒（PRV）、猪流行性腹泻病毒（PEDV）5种病原的感染情况,采用RT-PCR/PCR方法,对2015年3月—2019年3月采集自广西14个地市1 010个不同规模类型猪场的2 104份病料进行5种病原的核酸检测,并对检测结果进行统计分析。结果显示：2015—2019年5种病原在广西14个地市的规模猪场中均有检出,其中PRRSV、PEDV、PCV2检出率较高,分别为29.88%、27.75%和24.60%,与其他病原相比差异显著（P<0.05）,南宁、玉林、桂林、百色、柳州、贵港、崇左、北海等生猪主产区以及中小型猪场的病原检出率相对较高（P<0.05）;季节因素对PRRSV和PRV感染影响较大,分别在秋季和春季检出率显著增加（P<0.05）;混合感染现象较为普遍,以PCV2分别与PRRSV、CSFV和PRV的二重感染为主（P<0.01）。结果表明,广西生猪主产区以及中小型猪场的5种病原感染情况较为严重,尤其是PRRSV、PEDV和PCV2,需加强免疫,重点防控。本检测摸清了广西地区引起猪群发病的主要病毒性病原及其流行特点,对于广西地区主要猪病的重点防控提供了参考。 相似文献
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广西猪繁殖与呼吸综合征病毒感染状况调查 总被引：4，自引：0，他引：4
采用RT-PCR技术,对2004年1月至2005年4月期间,广西13个市104个疑似猪繁殖与呼吸综合征病毒(PRRSV)感染猪场,无菌采取231头病、死猪的组织病料(肺脏、淋巴结、脾脏)进行了病毒检测。同时,对鉴定为PRRSV阳性的组织病料和猪场进行了猪圆环病毒2型(PCV2)、猪瘟病毒(CSFV)和猪伪狂犬病毒(PRV)的检测,以确定猪群中PRRSV与PCV2、CSFV和PRV混合感染情况。结果从12个市的115份组织病料中检出PRRSV,病料的平均阳性率为49.78%(115/231),猪场的平均阳性率为61.54%(64/104),不同地市有一定的差异。PRRSV与PCV2、CSFV和/或PRV二重或多重混和感染的组织病料总数为53份,猪场总数为39个,混合感染的组织病料和猪场的总阳性率分别为22.94%(53/231)和37.50%(39/104)。混合感染的组织病料占PRRSV阳性组织病料的46.09%(53/115),混合感染的猪场占PRRSV阳性猪场的60.94%(39/64)。其中以PCV2和PRRSV混合感染的组织病料和猪场数最多。由此可见,PRRSV感染在广西猪场已普遍存在,与其他病毒混合感染现象逐渐趋向复杂化。 相似文献
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应用PCR技术,结合,临床观察、病理解剖对福建省不同地区断乳多系统衰竭综合征（PMws）发病猪群采集的病料进行多重病原检测与分离。结果表明50份病料中猪圆环病毒2型（PCV2）、猪繁殖与呼吸综合征病毒（PRRSV）、猪瘟病毒（CSFV）、猪伪狂犬病病毒（PRV）阳性率分别为40％、26％、4％、0,不同地区各病原检出率差别不大。病毒性混合感染以PCV2和PRRSV为主,感染率为22％;PCV2与CFSV混合感染率为4％;PRRSV与CFSV混合感染率为4％;PCV2、CFSV、PRRSV三种病原混合感染率为4％。研究结果表明福建大部分地区猪群PMWS的发生是PCV2、PRRSV、CSFV等多种病原混合感染的结果,其主要病原为PCV2,该病的发生没有明显地域性。 相似文献
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应用ELISA方法对采自41个猪场的病猪及健康猪血清245份进行PRRSV、PCV2、PRV(gpI)、SIV、CSFV抗体检测;采用PCR或RT—PCR方法对31个猪场的79份病料进行猪蓝耳病病毒(PRRSV)、猪瘟病毒(CS-FV)、猪圆环病毒Ⅱ型(PCV2)等3种病毒检测。抗体检测结果表明:疫情发生后发病猪群的PRRS抗体变化最显著,从18.35%上升到65.87%,PCV-2抗体从16.5%上升到33.3%,而SIV、PRV(gpI)基本保持不变,CSF抗体合格率反而下低了28.35%。病毒检测结果表明:疫情发生前后均检测到猪蓝耳病病毒(PRRSV)、猪瘟(CSFV)、猪圆环病毒Ⅱ型(PCV2)病毒,但是疫情发生后病猪PRRS病毒检出率最高,由28.26%上升到69.7%,PCV-2检出率则上升16%,CSFV检出率则基本持平。提示此次疫病是以PRRS和PCV2为主要病原或诱因所致的多病原综合性传染病。 相似文献
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研究旨在了解河池市屠宰猪群主要疫病感染情况,于2019—2022年采集屠宰猪群组织混合样品,应用实时荧光定量RT-PCR检测猪繁殖与呼吸综合征病毒（PRRSV）、猪瘟病毒（CSFV）、口蹄疫病毒（FMDV）、猪塞内卡病毒（SVA）,应用荧光PCR检测圆环病毒2型（PCV2）、圆环病毒3型（PCV3）、伪狂犬病毒（PRV）。结果显示,检测的1 745份样品中,除FMDV和PRV没有检出外,其余5种病原均有检出,样品总体阳性率由高到低依次为42.87%(PCV2)、11.63%(PCV3)、8.48%(PRRSV)、0.80%(CSFV)、0.80%(SVA);县区检出率依次为100.00%(PCV2)、100.00%(PRRSV)、90.91%(PCV3)、54.55%(CSFV)、27.27%(SVA);5种病原存在不同程度的混合感染。研究表明,圆环病毒病、猪繁殖与呼吸综合征和猪瘟在河池市及其周边地区猪群中流行普遍,需进一步加强监测和做好防控措施。 相似文献
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广西猪圆环病毒2型感染的流行病学调查 总被引：7，自引：0，他引：7
结合流行病学、临床症状、病理变化，采用PCR技术，对2004年1月至2005年5月采自广西14个市97个疑似猪圆环病毒2型（PCV2）感染发病猪场的197份组织病料（脾、肺、淋巴结）进行了PCV2检测；同时，对鉴定为PCV2阳性的组织病料和猪场进行了猪生殖与呼吸综合征病毒（PRRSV）、猪瘟病毒（CSFV）、猪流感病毒（SIV）和猪伪狂犬病病毒（PRV）的检测，另外，对6个地（市）11个生猪屠宰场采集的外观健康屠宰猪的295份组织样品（脾、肺、淋巴结）进行了PCV2检测。结果显示，在197份组织样品中检出PCV2阳性病料108份，平均阳性率为54．82％（108／197），阳性猪场62个，平均阳性率为63．92％（62／97）。PCV2与PRRSV、CSFV、SIV、PRV混合感染的组织病料总阳性率为42．13％（83／197），混合感染的猪场总阳性率为57．73%（56／97）。从21头外观健康屠宰猪的组织样品中检测到PCV2，阳性率为7．10％。由此可见，PCV2感染在广西猪群中已普遍存在，混合感染和健康带毒现象使病情更加复杂。 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.
相似文献19.
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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