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1.
本文对山东省12个地市58个鸡群传染性贫血的流行情况进行了调查,共检测了368份血清样品,蛋鸡群、肉鸡群和种鸡群的鸡传染性贫血病毒(CAV)ELISA抗体检出率分别为91.7%、77.6%和84.78%,平均抗体阳性率为83.2%,结果表明近几年山东省鸡群中CAV感染相当普遍,而且蛋鸡和种鸡抗体阳性率明显高于肉鸡群。 相似文献
2.
为了了解和掌握鸡毒支原体（Mycoplasma galliscepticum,MG）在福建省近年的感染情况,本研究采用商品化ELISA抗体检测试剂盒对2018-2019年福建地区的21个鸡群、916份非免疫鸡群血清样品进行MG抗体检测,并统计分析MG在福建省感染流行情况。调查结果发现,2018-2019年福建地区非免疫鸡群的MG抗体总阳性率为69.43%(636/916),而检测的21个鸡群中,群体MG抗体阳性率为90.48%,其中阳性率0%～20%的有4个,21%～50%的有4个,51%～100%的有13个。育雏阶段（1～42日龄）鸡群MG抗体阳性率就高达37.10%,并且发现产蛋开始至淘汰阶段MG抗体阳性率为77.61%,MG抗体阳性率是育雏阶段的2倍以上。福建省蛋鸡和种鸡群MG感染率分别为79.22%和75.22%,并无显著差异。通过福建地区未免疫鸡群的MG抗体调查,发现MG在福建省内感染普遍,表明病原在鸡群中存在水平传播,同时种鸡群也存在着严重的MG感染,这为垂直传播提供可能。本研究通过调查福建省内MG在鸡群中的感染情况,为掌握MG在鸡群中的感染情况并采取防控措施降低鸡群MG感... 相似文献
3.
对不同种鸡场不同周龄肉种鸡进行REV、CAV和ALV（A、B亚群）抗体检测。在572份血清样品中，除了一个8．1周龄和15周龄鸡群CAV抗体阳性率分别为13．3％和75％外，其它鸡群无论是否进行CAV疫苗免疫，抗体阳性率均为100％。在212份血清样品中，REV抗体阳性率在16．7％～62．5％之间；ALV（A、B亚群）抗体阳性率在0％～75％之间。本研究结果表明，所检测种鸡群中存在3种免疫抑制性病毒的感染或混合感染。 相似文献
4.
从云南省10个养鸡场采集不同日龄、品种、性别和不同用途鸡的血清样品103份，以血凝抑制（HI）试验检测鸡群的减蛋综合征（EDS）血清抗水平，结果，10周龄以下鸡的EDS血清抗体阳性率为16．7％，其阳性率随着日龄的增加而增高；不同品种鸡群中，迪高鸡和地方土鸡的EDS血清抗体阳性率较低，而伊萨褐鸡阳性率高达100％；公鸡EDS血清抗体阳性率为55．6％，母鸡为73．4％；商品鸡EDS血清抗体阳性率为68．95，种鸡阳性率为62．5％；全部检测各的平均阳性率为67．9％，多数血清EDS HI效价为1：32－1：1024之间，最高的达1：4096。 相似文献
5.
为了解西安市养鸡场禽流感疫苗免疫后抗体产生情况,从西安市长安区、周至县、高陵县等区县父母代和商品代养鸡场采集血清2 626份,采用血凝试验和血凝抑制试验检测抗体滴度,经过检测,抗体合格率达84.3%;并对采集样品鸡群的免疫状况进行分类分析,结果表明免疫后3周~9周为抗体持续稳定期,10周后抗体水平开始下降;禽流感疫苗免疫2次~3次的鸡体内可产生较高水平的抗体。 相似文献
6.
为了解近年来广西容县霞烟鸡的鸡传染性法氏囊病(IBD)发病情况和流行趋势,采用酶联免疫吸附试验(ELISA)对2018年3月至2019年4月期间采自广西容县农村散养户中未免疫过IBD疫苗的245份病鸡血清样品进行了IBDV抗体的检测。结果显示,245份病鸡血清样品中IBDV抗体总体阳性率为46.12%(113/245),且不同日龄、季节、地区的病鸡血清样品中都检测到IBDV抗体的存在,说明IBDV在容县霞烟鸡的鸡群中普遍存在,提示IBDV仍是今后霞烟鸡群疫病防控的重点。 相似文献
7.
为了了解山东省J亚群禽白血病的流行情况,本研究从山东省养禽密集区域采集9个肉种禽场鸡血清样品201份,利用IDEXX的ELISA试剂盒采用ELISA方法进行禽白血病抗体检测,结果从201份样品中,检出56份样品为阳性,阳性率为27.86%;同时对该9个肉种鸡场及其20个商品代肉鸡场的鸡血清采用血凝抑制试验进行新城疫抗体检测,9个肉种鸡场的252份血清中251份样品免疫合格,免疫合格率为99.60%,20个商品代肉鸡场的570份血清中450份样品免疫合格,免疫合格率为78.95%。 相似文献
8.
为掌握伊犁河谷地区不同来源黄羽父母代肉种鸡网状内皮组织增生病病毒(REV)与鸡白痢流行情况,为父母代肉种鸡场引种提供重要依据。本研究通过酶联免疫吸附实验(ELISA)方法和鸡白痢伤寒沙门氏菌血清平板凝集实验,从6家种鸡场采集5个不同来源的父母代肉种鸡种公鸡血样879份,进行REV血清抗体检测及鸡白痢检测。结果:不同来源父母代肉种公鸡REV群体血清抗体阳性率为100%,个体血清抗体阳性率为7.41%～19.10%,平均血清抗体阳性率为14.79%。鸡白痢群体阳性率为100%,个体阳性率为20.83%～54.10%,平均阳性率为31.63%。混合感染样品52份,混合感染阳性率5.92%。说明REV与鸡白痢的感染具有相关性,可能与不同来源祖代场对REV和鸡白痢的净化重视程度有关。鸡群感染REV时,鸡白痢易感性增高,这与REV可引起免疫抑制的特性相符。 相似文献
9.
2007年12月笔者对安徽省宣城地区7个鸡场的种鸡随机抽取血样992份,采用血清平板凝集试验进行鸡白痢抗体检测,结果表明,该地区种鸡群鸡白痢阳性率为10.9％ ,其中公鸡阳性率为11.2％,母鸡阳性率为10.6％,表明该地区鸡群中鸡白痢的感染率较高,已成为危害当地养鸡业的重要疾病之一。 相似文献
10.
为了分析西宁市某县鸡新城疫免疫情况,在全县范围从各乡散养户和规模化养殖场鸡群中共采血清样品197份,采用血凝抑制试验对鸡新城疫免疫抗体进行检测。结果表明:规模化鸡场鸡新城疫免疫合格率最高为71.4%,散养户鸡新城疫免疫合格率最低为15%。鸡血清样品新城疫病毒抗体阳性率低,说明该县鸡新城疫免疫抗体水平低,并对其原因进行了分析。 相似文献
11.
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
13.
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.
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
15.
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
17.
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
18.
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.
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
20.
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
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