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1.
为了解湖南省当前猪病的总体流行情况,对2017年湖南省13个市州72个规模化猪场和15个散养户送检的87例临床病例,进行了实验室诊断和流行病学分析。结果显示：该省猪群疫病多以散发形式出现,以高热、腹泻和呼吸道症状多见,气温偏低或偏高季节发病率较高,保育猪发病率高于其他生产阶段猪群,尤其是存栏量小的猪群;共检出11种病原,其中猪圆环病毒2型（PCV2）和高致病性猪繁殖与呼吸综合征病毒（HPPRRSV）检出率最高,且多以混合感染形式存在。结果表明,湖南省猪群中病毒感染较为广泛,PCV2和HPPRRSV是主要感染病原,在气温偏低和高温季节,要特别注意加强猪病防控。 相似文献
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为了解2016—2017年安徽地区猪群中主要病原的感染情况，本调查采用了PCR方法结合细菌分离鉴定法，对1 224份临床受检样品进行主要病毒性和细菌性病原的检测。结果显示，样品总阳性检出率为46.98%，其中PCV2、PEDV、SS、PRRSV、PRV、TGEV、HPS、CSFV、E. rhusiopathiae的阳性检出率依次为40.52%、38.28%、21.67%、19.28%、17.37%、7.69%、5.78%、2.91%、1.81%；混合感染率为15.65%，以“PCV2+PRRSV”为主要感染模式（22.22%）；PRV、PEDV的阳性检出率有所下降，PRRSV则有所上升；PCV2、PRV、PRRSV、PEDV、HPS、SS在四个季度中均有检出，其中PEDV在腹泻类样品中检出率最高（38.78%），PCV2在呼吸系统症状类样品中检出率最高（50.29%），PRV、PCV2在神经症状类样品中检出率均较高（50%、37.21%），PCV2、SS在繁殖障碍类样品中检出率均较高（31.88%、18.75%）。结果表明，2016—2017年安徽地区猪群中普遍存在PCV2、PRV、PRRSV、PEDV、SS的感染，以混合感染为主，且其程度有所加重；PRRS、PED一年四季均可发生，冬春季是PCVD、PR的高发时段；腹泻、呼吸道疾病和繁殖障碍分别是危害产房仔猪、保育猪和种猪的主要问题；PCV2是重要的感染病原，易导致SS的继发或混合感染。 相似文献
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随着猪蓝耳病病毒（PRRSV）和猪圆环病毒（PCV－2）进入中国并广泛流行，猪场疾病越来越复杂了。由于临床发病时总是存在多种病因的混合感染，人们无法精确地判定病原的感染模式，给疾病诊断带来困难。PRRSV和PCV－2等病毒性病原，均存在持续感染，猪群可能不表现明显的临床症状，但病原总会在猪群中长期存在，对真实的感染情况进行连续的监测十分重要。因此，猪场应该把连续、规范的疾病监测作为一项长期的基础性工作。 相似文献
4.
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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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
6.
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
7.
为探明2016年广西猪群主要疫病的感染情况,从发病猪场和屠宰场共采集猪组织样品340份,应用RT-PCR方法检测猪瘟病毒（CSFV）?猪繁殖与呼吸综合征病毒（PRRSV）、猪流行性腹泻病毒（PEDV）,应用PCR方法检测猪圆环病毒2型（PCV2）和猪伪狂犬病病毒（PRV）?结果显示,发病猪场中的CSFV、PRRSV、PEDV、PCV2和PRV感染率分别为1.97%?16.45%?0.00%?34.21%和3.95%,而屠宰场猪的感染率分别为0.53%?11.17%?0.00%?43.09%和0.00%?对猪群的混合感染情况进行分析发现,PCV2和其它病原的混合感染率最高?其中,发病猪场二重感染率最高的为“CSFV+PCV2”,为3.95%;其次为“PRRSV+PCV2”,为3.29%?屠宰场二重感染率最高的是“PRRSV+PCV2”,为2.66%?结果表明：临床健康屠宰猪群和发病猪群中的PCV2和PRRSV感染率较高,其中PCV2感染率最高,且常与CSFV和PRRSV发生混合感染;PRV和CSFV主要在发病猪中被检出;加强PCV2和PRV的监控,对控制猪群发病具有重要意义;应通过加强生物安全措施来净化PRRSV和PRV? 相似文献
8.
为了解2016年山东省几种主要猪病毒性疫病的流行情况,采用荧光定量RT-PCR或PCR方法,对山东省部分猪场送检的730份病料进行了病原学检测。结果检出248份阳性病料,样品个体阳性检出率由高到低的病原依次为猪圆环病毒2型（13.02%）、猪蓝耳病病毒（10.41%）、古典猪瘟病毒（8.08%）、猪流行性腹泻病毒（7.26%）、猪伪狂犬病毒（3.84%）、猪轮状病毒（1.65%）、猪传染性胃肠炎病毒（0.14%）;样品混合感染阳性率为8.08%,以猪蓝耳病病毒和猪圆环病毒2型混合感染最为常见（3.02%）。本次病原学检测为山东省猪场病毒性疾病的综合防控提供了数据参考。 相似文献
9.
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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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12.
Heartworm in dogs in Canada in 1982 总被引：8，自引：8，他引：0
Slocombe JO McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1983,24(7):227-229
13.
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14.
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16.
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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19.
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