2014年泉州市原种畜禽场重点疫病本底调查情况

为切实掌握泉州市原种畜禽场重点疫病情况,2014年4～9月,我中心采用问卷调查、现场走访、采集样品检测等方式,对1个原种鸡场、1个原种鸭场（1个场挂3块牌子）、5个原种猪场、1个大型奶牛企业开展重点疫病本底调查。本次调查共采集各类样品1616份（其中鸡血清228份、鸡棉拭子228份、鸡蛋蛋清216份,鸭棉拭子290份,猪血清250份、对应猪扁桃体250份、病料样品54份,奶牛50头及对应奶牛血清50份）,样品累计检测5066份次。结果表明：原种鸡场方面,高致病性禽流感H5亚型、禽流感H7亚型、鸡新城疫病原核酸阳性率均为0%;高致病性禽流感H5亚型、鸡新城疫免疫抗体合格率分别为98.96%.97.92%,禽白血病ALV-AB抗体、ALV-J抗体、禽白血病P27抗原,阳性率分别为45.61%、61.84%、6.94%,鸡白痢抗体阳性率28.51%,说明该场禽白血病和鸡白痢的感染较普遍;原种鸭场方面,高致病性禽流感H5亚型、禽流感H7亚型、鸭瘟病原核酸阳性率均为0%。原种猪场方面,对猪伪狂犬病、猪繁殖与呼吸障碍综合征、高致病性猪蓝耳病、猪瘟、猪口蹄疫等5个病种进行抗体和病原检测,猪伪狂犬病gB免疫抗体合格率98.4%,gE抗体阳性率19.6%,猪繁殖与呼吸障碍综合征免疫抗体合格率86.4%,O型口蹄疫抗体免疫合格率76.4%,猪瘟抗体免疫合格率90.8%,组织样品猪伪狂犬病核酸阳性率11.1%,扁桃体样品猪繁殖与呼吸障碍综合征、高致病性猪蓝耳病、猪瘟、猪口蹄疫核酸阳性率均为0%,说明我市个别原种猪场中存在猪伪狂犬病病毒感染的情况。奶牛企业方面,布鲁氏茵病及结核病阳性率均为0%。本次调查为我市首次,其结果为今后我市制定种畜禽重点疫病净化实施工作方案,进一步有针对性对原种畜禽场开展动物疫病净化工作提供了参考依据。     

邵武市鸭群新城疫病毒感染现状分析

为了掌握邵武市鸭新城疫病毒感染情况,2016年秋季采用鸡新城疫病毒抗原对该市19个乡镇、街道办事处随机抽样采集的散养鸭和规模鸭场血清样品,进行鸭新城疫病毒非免疫抗体检测,共检测血清样品177份,其中新城疫病毒抗体阳性的鸭血清样品93份,阳性率高达52.54%。部分散户鸭新城疫病毒抗体阳性率高达100%,散户鸭新城疫病毒平均抗体阳性率为60%,规模鸭场平均抗体阳性率为45%,这可能与鸡鸭混养的养殖模式有关。从检测结果还发现,非免疫新城疫病毒抗体的阳性率与鸭的品种有关,易感性依次为番鸭麻鸭北京鸭。总体显示鸭新城疫病毒的感染情况虽然高,但只感染不发病,结果对水禽新城疫的防控有一定的指导意义。     

西宁市鸡新城疫免疫现状分析及对策

为监视免疫效果．分析疫情状况预防和控制新城疫病．2000年至2004年对二县四区规模养鸡场农户散养鸡群及农贸市场商品鸡(免疫鸡群)进行了血清学抗体检测。     

粤西地区三种猪病毒病抗体检测与分析

为了评价粤西地区猪群的免疫情况,应用ELISA对2016~2017年采自粤西地区20个不同规模养猪场的409份血清进行猪瘟、猪繁殖与呼吸综合征以及猪伪狂犬病抗体检测。检测结果表明,猪场猪瘟抗体平均合格率为65.31%,猪繁殖与呼吸综合征抗体合格率为67.65%,猪伪狂犬病抗体合格率为92.60%;不同存栏数的猪场猪伪狂犬病抗体合格率均较高,可达83.80%以上,其余2种抗体检测结果显示,猪场规模越小,抗体合格率越低。提示本次调查中猪伪狂犬病的抗体平均合格率较高,而猪瘟、猪繁殖与呼吸综合征的平均合格率均较低,应加强对这两种疫病的监测与强化免疫。     

南平市2014年度畜禽重点疫病本底调查分析

对南平市2014年度4~9月份定点调查的4个原种禽场、3个原种猪场、2个种公猪站、23个规模乳牛场的重点疫病进行本底调查、统计。结果:猪病方面,猪瘟和蓝耳病病原阳性率为0%;猪瘟及蓝耳病免疫抗体水平良好,免疫抗体合格率分别为96.4%和87.3%;伪狂犬病g E抗体阳性率为2.7%,g B抗体合格率仅为42.1%,说明伪狂犬病控制方面仍存在一定的压力;禽病方面,检测样品除禽白血病病原学阳性率为0.7%外,禽流感、鸡新城疫病原学阳性率为0%;禽流感、鸡新城疫、鸡白痢免疫抗体合格率高,分别为100%、100%、99.4%,禽白血病感染抗体ALV-A/B抗体、ALV-J抗体阳性率分别为7.2%、16.9%,说明禽白血病的感染仍较普遍;同时对布鲁氏菌病及结核病进行检测,结果显示阳性率均为0%。根据本次检测结果,为制定南平市种畜禽重点疫病净化工作方案提供依据。     

遵义地区某规模肉鸡场新城疫抗体水平检测报告

鸡新城疫是一种急性、热性、高度接触性传染病,对肉鸡养殖业可持续健康发展威胁很大。为监测遵义地区某规模肉鸡场新城疫抗体水平,笔者在2017年的不同月份随机采集129份血清样本,采用间接血凝抑制试验的方法进行鸡新城疫免疫抗体检测。结果表明,鸡新城疫病毒抗体滴度均在5log2以上,免疫合格率均为100%(129/129),抗体保护力良好。     

鸡新城疫流行病学的调查

对齐齐哈尔北部市县进行鸡新城疫的流行病学调查,采用血清学方法对齐齐哈尔北部市县鸡场的1 500份血清样本进行抗体监测。同时,对疑似鸡新城疫病料采用常规鸡胚尿囊腔接种方法分离新城疫病毒。监测结果表明,不同地区农户散养鸡新城疫血清抗体水平明显低于规模养鸡场鸡。实验共分离出7株新城疫病毒,4株为中等致病型毒株,3株为徐缓致病型毒株。齐齐哈尔北部市县仍受新城疫传染的威胁,提示应加强对鸡新城疫的防治。     

2014年黔东南州猪主要动物疫病免疫抗体集中检测与分析

对全年集中采集的2053份猪血清用ELISA 法进行猪瘟、高致病性猪蓝耳病和猪O型口蹄疫抗体检测,抗体合格率分别为39.37%、48.53%和71.36%。不同饲养模式下,抗体合格率从高到低依次为规模场、散养户、屠宰场;不同饲养规模下,养殖规模越大,抗体合格率越高;春季和秋季的免疫抗体水平均偏低,不能有效保护畜禽的健康,存在重大动物疫病暴发风险。     

免疫新城疫疫苗后为什么还会发新城疫?

当前许多养鸡场接种了新城疫疫苗之后．还会频繁发生新城疫病,针对这个问题分析如下： 1外界流行的新城疫毒株出现变异,同时毒力增强,能穿透母源抗体．造成新城疫病的发生。     

甘肃省张掖市规模养鸡场减蛋综合征和新城疫免疫抗体水平调查

为掌握张掖市规模养鸡场减蛋综合征和新城疫的免疫抗体水平,对张掖市5个县(区)10个规模养鸡场500份血清进行了减蛋综合征、新城疫免疫抗体检测。结果表明减蛋综合征合格409份,合格率为81.8%;新城疫合格411份,合格率为82.2%。减蛋综合征合格率最高为95%,最低为70%;新城疫合格率最高为100%,最低为71%。群体免疫抗体水平均达到农业部规定≥70%的标准。     

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 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 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 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 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.