共查询到20条相似文献，搜索用时 796 毫秒
1.
鸡传染性贫血病毒与其他禽免疫抑制性疾病病毒的混合感染 总被引：11，自引：2，他引：11
应用多重PCR方法对广西主要养鸡地区的514只可疑鸡传染性贫血与其他禽免疫抑制性疾病临床病／死鸡进行了检测。结果显示，鸡传染性贫血病毒（CIAV）与其他禽免疫抑制性疾病病毒的二重或多重感染率达48．05％；CIAV阳性鸡群中，马立克氏病病毒（MDV）、网状内皮增生症病毒（REV）、禽白血病病毒（ALV）的群阳性率和个体阳性率均明显高于CIAV阴性鸡群，表明CIAV的感染与3种肿瘤病病毒的感染具有明显相关性，其中CIAV与MDV的感染具有明显相互促进作用；被调查鸡群中，传染性法氏囊病病毒（IBDV）和禽呼肠孤病毒（ARV）也有一定的感染率。结果表明,商业鸡群中各种免疫抑制性病毒的混合感染很普遍．与鸡群临床上所表现的生长阻滞、疫苗免疫效果不佳、总的发病率和死淘率增加等密切相关。 相似文献
2.
山东省鸡传染性贫血流行病学调查 总被引：8，自引：0，他引：8
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份务清样品，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CAV抗体阳性率明显高于肉鸡群。 相似文献
3.
我国鸡群免疫抑制病感染现状与防控 总被引：1，自引：0，他引：1
一、鸡群免疫抑制病的感染现状
1．经对鸡群中禽网状内皮增生病病毒、鸡传染性贫血病毒、禽呼肠孤病毒3种病毒感染的血清学调查发现,绝大多数鸡场中鸡传染性贫血病毒、禽呼肠孤病毒的母源抗体阳性率都非常高,在经过1～3周母源抗体消失后不久,从5周龄开始出现自然感染引发的抗体阳性率逐渐升高;到20周龄时,不论什么遗传品系和地理分布,绝大数鸡群中鸡传染性贫血病毒、禽呼肠孤病毒的抗体阳性率可达到95％～100％。 相似文献
4.
为了解禽白血病、禽网状内皮组织增生症和鸡传染性贫血在本地鸡群的感染情况,对宁波市7个区、县的15个鸡群进行了3种疫病4种抗体的血清学检测。结果显示:362份被检血清中,AB亚群禽白血病病毒(ALV-AB)抗体阳性率为55.0%,J亚群禽白血病病毒(ALV-J)抗体阳性率为21.5%,禽网状内皮组织增生症病毒(REV)抗体阳性率为32.0%,鸡传染性贫血病毒(CAV)抗体阳性率为66.8%;15个鸡场AB亚群禽白血病和鸡传染性贫血共感染率为100.0%;12个鸡场共感染了3种免疫抑制性疫病,混合感染率高达80.0%。调查结果表明免疫抑制病在宁波市鸡群中非常普遍。 相似文献
5.
鸡免疫抑制病主要包括鸡马立克氏病（ MD)，鸡传染性法氏囊病（ IBD)，鸡传染性贫血（ CIA)和禽网状内皮增生症（ RE）。其中，鸡传染性贫血是由鸡传染性贫血病毒（ CAV）引起的鸡再生障碍性贫血和淋巴组织萎缩为主要特征的免疫抑制病。禽网状内皮细胞增生症是由禽网状内皮细胞增生症病毒（ REV）引起的另一类免疫抑制病。这些免疫抑制病均能引起感染鸡的免疫抑制。从而干扰疫苗的免疫效果和药物的治疗效果。我市某种鸡场因鸡群感染 CIA和 RE，从而继发其它一些疾病，带来巨大经济损失，现报告如下。 一.发病情况 我市某种… 相似文献
6.
针对鸡7种主要免疫抑制性传染病，包括传染性法氏囊炎（IBD）、马立克氏病（MD）、鸡传染性贫血病（CIA）、包涵体性肝炎（IBH）、病毒性关节炎（VA）、急性淋巴细胞白血病（ALL）、网状内皮组织增殖症（RE）、选择辽西地区有代表性的蛋种鸡群，肉种鸡群，商品蛋鸡群，商品肉鸡群各20个进行血清流行病学调查，主要采用琼脂扩散试验，ELISA试验等诊断方法进行血清抗体检测，此外对辽西地区临床病例进行调查分析，统计近2年内辽西地区鸡7种主要免疫抑制性传染病的感染及发病情况，并对免疫抑制性传染病阳性鸡群的ND HI效价和细菌阳性率进行了检测。结果表明免疫抑制性传染病感染鸡群免疫能力低下，ND HI效价显著偏低，细菌感染率达80%以上。免疫抑制性传染病的存在是构成该地区鸡群免疫失败，疫病流行的主要因素。 相似文献
7.
ELISA检测鸡传染性贫血病病毒抗体中的非特异性反应问题 总被引：2，自引：0，他引：2
为了监测ＣＳＩＲＯＳＰＦ鸡群，经常用商业ＥＬＩＳＡ试剂盒检测鸡群的抗鸡传染性贫血病毒（ＣＡＶ）抗体。近来发现个别鸡群的阳性率达１８．２％，占总数的２．７％。但后来采血发现大部分可疑鸡都为阴性，可见前面的结果存在假阳性。 相似文献
8.
我国白羽肉用型鸡群中CAV、REV和REOV感染状况的血清学调查 总被引：17，自引：1，他引：17
为了解鸡传染性贫血病毒（CAV）、禽网状内皮增生病病毒（REV）和呼肠孤病毒（REOV）在我国白羽肉用型鸡中的感染状态，在2003—2004年，检测了来自5省市8个公司不同年龄鸡群血清样品中3种病毒抗体的存在状况。结果表明，在送检的75个鸡群中，对CAV、REV和REOV呈现抗体阳性的鸡群分别有64个（85．3％）、36个（48％）和74个（96％）。在总共检测的1764份血清样品中，对这3种病毒的平均抗体阳性率分别为51．4％、9．8％和75．1％。在1日龄雏鸡，对CAV和REOV的平均母源抗体阳性率可达100％和81．1％，但对REV只有7．4％。抗体阳性率随年龄变化的动态分析表明，对REV和REOV的母源抗体在出壳后2～3周内消失，而对CAV的母源抗体则可持续3～4周。对CAV和REOV的抗体从5周龄起再次出现，到20周龄时，所有送检鸡群全部阳性，平均阳性率在90％以上。有近一半送检鸡群对REV呈现抗体阳性，抗体阳性率普遍较低，即使在达到开产年龄后，仍还有很高比例鸡为抗体阴性，即对REV仍为易感鸡。研究表明，我国多数鸡群中都同时存在着这3种病毒的感染，但它们在感染的程度和动态等流行病学特点上显著不同，应根据鸡群中抗体的阳性率分别采取不同的措施。 相似文献
9.
10.
11.
12.
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13.
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
14.
Ovine scrapie was first recorded in Cyprus in 1985. Subsequently four dairy goats kept in two mixed flocks with affected sheep developed characteristic clinical signs similar to those seen in sheep. Fifteen goats from the two flocks were examined histologically and neurological lesions consistent with a diagnosis of scrapie were found in the four animals and in three others which had subsequently developed early neurological signs. These lesions were similar to those of naturally-affected sheep although neuronal degeneration and vacuolation were more severe in some cases. 相似文献
15.
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16.
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
17.
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18.
19.
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20.
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