我国猪伪狂犬病的最新流行动态与防控措施

1伪狂犬病最新流行动态伪狂犬病病毒(PRV)是一个不可忽视的致病因子,造成伪狂犬病(PR)在全国大范围的传播流行,伪狂犬病病毒起到了推波助澜的作用,而且使猪病的感染流行复杂化。近年来一些猪场猪伪狂犬病免疫失败,猪伪狂犬病与其他疫病的混合感染不断涌现,使猪伪狂犬病的防控形势面临新的挑战。伪狂犬病并没有消失,而     

抗伪狂犬病病毒单克隆抗体的应用

近年来，国内外许多学者应用抗伪狂犬病病毒单克隆抗体，在伪狂犬病病毒的研究方面取得了显著的进展。本文对抗伪狂犬病病毒单克隆抗体在伪狂犬病病毒抗原分析，在保护免疫中的作用及其在诊断伪狂犬病中的应用进行了较详细的综述，对抗伪狂犬病病毒单克隆抗体的深入研究有指导意义。     

猪伪狂犬病的临床诊治

猪伪狂犬病(PR)是由猪伪狂犬病病毒引起的一种致死率高、危害严重的急性传染病,笔者分析了洞口县该病的发生情况,并对猪伪狂犬病临床症状、实验室诊断和防治技术进行总结,提出加强猪伪狂犬病防治知识普及工作和提高猪伪狂犬病综合防治技术,以达到控制猪伪狂犬病的目的。     

一起肥育猪伪狂犬病的诊疗与分析

猪伪狂犬病,又称Aujeszky氏病,是由伪狂犬病病毒引起猪和其他动物共患的一种急性传染病。文章通过对河南周口某猪场一起肥育猪伪狂犬病的发病情况和临床症状调查、病理剖检和相关的实验室诊断,最终确诊为猪伪狂犬病。伪狂犬病严重危害养猪业的发展,为此猪场做好伪狂犬病的防控十分重要。     

中小型猪场猪伪狂犬病净化策略

我国中小型猪场普遍存在猪伪狂犬病,笔者介绍了猪伪狂犬病对中小型猪场的危害和中小型猪场伪狂犬病难以净化的原因,并提出了中小型猪场伪狂犬病的净化策略。     

当前猪伪狂犬病和仔猪腹泻的防控

1猪伪狂犬病的防控1.1伪狂犬病的历史和现状狂犬病是一种老病,1931年诊断出来,现在基本上能控制。伪狂犬病最早发现于牛,类似狂犬病。后来利用TK/gE基因缺失疫苗免疫和gE-ELISA鉴别诊断方法,检出和淘汰野毒感染猪,逐步建立了伪狂犬病阴性猪群。欧美发达国家根除了家猪的伪狂犬病。野猪是潜在的传染源。我国大型种猪场伪狂犬病净化也取得了很好的进展。1.2临床表现和流行病学特征2011年冬季东北部分地区和2012年3～7月中原周边省份都发生疑似伪狂犬病的病例,主要     

猪伪狂犬病野毒感染血清学调查与分析

猪伪狂犬病是由伪狂犬病病毒(简称PRV)引起的一种繁殖障碍和呼吸道疾病为主的传染病。近十几年来,猪伪狂犬病对我国养猪业危害逐年加重,经济损失相当严重。因此,猪伪狂犬病已成为养猪业重点防治的三大疫病之一,近两三年猪伪狂犬病基因缺失苗的广泛应用,才有效地控制了猪伪狂犬病的暴发与流行。但是,在临床上仍然有部分猪场     

一例非典型性猪伪狂犬病的诊治

某规模猪场发生非典型性猪伪狂犬病的病例,在诊治过程中发现该场猪伪狂犬病野毒感染非常严重。为此,文章建议猪场针对猪伪狂犬病制定一个科学合理的免疫程序,同时做好其他疾病的免疫;对于野毒感染率高的猪场,最好制定伪狂犬病的净化方案,建立无伪狂犬病的阴性种猪场,并加强猪场的生物安全建设以防止伪狂犬病病毒的再次感染。     

猪伪狂犬病疫苗研究进展

目前,猪伪狂犬病仍然是我国规模化猪场的重要疫病之一,该病的发生给养猪业带来了巨大的经济损失,虽然部分猪场开始实施伪狂犬病的净化,但疫苗接种仍是预防控制猪伪狂犬病的主要措施。因此,本文对当前猪伪狂犬病疫苗的研究进展简要综述,以期为伪狂犬病的防制提供一定的参考。     

浅谈猪伪狂犬病的防控与净化

当前猪群伪狂犬病野毒感染率居高不下,猪伪狂犬病的净化压力仍然巨大。文章从国内常用净化手段以及净化困难的原因着手,解读猪伪狂犬病净化进展缓慢的原因,并对养殖场猪伪狂犬病净化提出合理化建议。     

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 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 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 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 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.

     

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 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.