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《养殖与饲料.饲料世界》2017,(9)
为了解临沧市牛、羊和犬弓形虫感染情况,分别采集临沧市的临翔区、双江县、凤庆县和沧源县农户、养殖场和餐馆的动物血样品284份(牛143份、羊81份、犬60份),分离血清,采用间接血凝试验(IHA)进行弓形虫抗体检测。结果表明,弓形虫抗体阳性53份,阳性率18.6%,其中牛血清弓形虫抗体阳性20份,阳性率为14%;羊血清弓形虫抗体阳性19份,阳性率为23.5%;犬血清弓形虫抗体阳性14份,阳性率为23.3%。综上所述,临沧市牛羊犬弓形虫抗体阳性率较高,有兽医公共卫生安全隐患。 相似文献
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为了解东莞市多种动物弓形虫感染的情况,采用ELISA方法对采自东莞市生猪屠宰场的猪血清3238份和饲养的犬血清299份、猫血清33份进行抗体检测,结果为猪血清弓形虫抗体阳性98份,抗体阳性率为3.03%,犬血清抗体阳性25份,抗体阳性率8.36%,猫血清抗体阳性4份,抗体阳性率12.12%。结果表明猪、犬和猫都存在不同程度的弓形虫感染,其中猫的感染率最高,其次为犬,弓形虫病防治需要采取综合防控措施。 相似文献
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为了解东莞市动物布鲁氏菌病的流行情况,采用布鲁氏菌病虎红平板凝集试验和试管凝集试验,对2012~2016年采自东莞市动物的血清进行检测,共检测猪血清20221份,牛血清203份,羊血清239份,犬血清4508份,马血清329份,其中,猪、牛、羊、犬、马布鲁氏菌病抗体阳性率分别为0.04%、0.73%、0.08%、0.09%和0。结果表明,东莞市猪、牛、羊、犬中可能存在布鲁氏菌病的感染,动物和动物产品存在布鲁氏菌污染的风险。对布鲁氏菌病的防控需采取综合防控措施。 相似文献
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通过对国内猪、牛和鸡弓形虫感染情况及危险因素的综述分析发现,各地的猪弓形虫血清阳性率差异较大,其中重庆市猪弓形虫感染阳性率有的高达71.9%;分析认为猪弓形虫感染的危险因素主要是性别、品种、饲养方式和养殖环境等。甘肃省、河南省的牛弓形虫感染率分别为4.8%和5.4%,新疆牛弓形虫血清阳性率最高的达到46.4%;与犬猫接触、年龄及饲养方式等是影响牛弓形虫感染的风险因素。甘肃省、辽宁省的鸡弓形虫感染率分别为7.3%和9.0%,广东的鸡弓形虫感染率最高的达20.3%;鸡弓形虫感染与饲养方式密切相关。 相似文献
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为了解云南省边境地区猪弓形虫感染情况及流行趋势,对云南省3个边境地区生猪屠宰场猪血清进行弓形虫检测,采集猪血液样本631份,应用猪用弓形虫抗体检测试剂盒检测血清中弓形虫抗体。结果表明:云南省边境地区猪血清中弓形虫IgG抗体总阳性率为2.2%,其中中越、中老、中缅边境地区猪弓形虫IgG抗体阳性率分别为3.1%(7/229)、2.8%(6/213)、0.5%(1/189),各地区间弓形虫感染阳性率差异不显著(P0.05)。说明云南边境地区市售猪肉及其副产品存在弓形虫,应减少或改变生食或半生食猪肉及其副产品,以降低弓形虫感染风险。 相似文献
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《养猪》2019,(2)
研究旨在初步了解平顶山市猪弓形虫病感染情况,于2018年3—11月采集平顶山市部分地区14个猪场共742份猪血清样品,应用ELISA(酶联免疫吸附试验)检测试剂盒对血清样品中弓形虫抗体进行检测与分析。结果显示,742份猪血清样品中有267份检测为弓形虫抗体阳性,平均阳性率为35.98%;不同养殖模式猪场弓形虫抗体检出率存在较大差异,其中散养场最高(57.39%),种猪场稍高(38.14%),规模化猪场最低(18.56%);在被调查的4个县市中,舞钢市、郏县、叶县和鲁山的猪弓形虫抗体检出率分别为48.82%、48.44%、39.62%和18.65%。调查结果说明,河南平顶山市猪弓形虫感染普遍存在,相关有效的防制措施急需制定与实施。 相似文献
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为调查和了解闵行区犬猫弓形虫感染情况,采用酶联免疫吸附试验(enzyme linked immunosorbent assay, ELISA)方法分别对2021—2022年采集的1 071份犬血清样品和230份猫血清样品开展弓形虫抗体检测。犬猫弓形虫IgG抗体阳性率为18.3%,其中:犬2021年和2022年阳性率分别为18.9%、20.5%,农村犬、犬场犬、宠物犬和流浪犬阳性率分别为25.9%、18.3%、17.4%和16.7%,不同年份、不同来源之间阳性率差异不显著(P>0.05);猫2021年和2022年阳性率分别为10.3%、12.6%,不同年份之间阳性率差异不显著(P>0.05),宠物猫和流浪猫阳性率分别为7.3%、15.7%,不同来源之间阳性率差异显著(P<0.05)。结果提示:闵行区犬猫弓形虫感染率较高,且犬的感染率高于猫,存在公共卫生安全隐患。 相似文献
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天津地区猪流感血清学调查 总被引:9,自引:0,他引:9
2002年-2005年期间,采用血凝抑制试验对天津市10个区县44个养猪场进行了猪流感病毒抗体检测,结果75%的被调查猪场抗体检测结果有阳性,检测的648份血清样品中,69.6%为阳性。流感病毒抗体亚型调查结果显示该地区流行的猪流感病毒主要为H1和H3亚型,抗体阳性率分别为55.4%和39.4%。部分猪群中存在抗H9亚型流感病毒抗体,阳性率为5.4%,但未发现H5亚型流感病毒抗体。此外,部分猪群中同时存在2种或3种亚型(H1,H3和H9)流感病毒的抗体,表明这些猪曾经同时被2种或3种不同亚型的流感病毒感染。 相似文献
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应用正向间接血凝试验对东莞市采集的977份犬血清和126份猫血清进行了衣原体抗体检测,检测结果为犬抗体阳性28份,抗体阳性率2.87%;其中散养犬只抗体阳性数24份,抗体阳性率2.96%,三鸟批发市场肉用犬抗体阳性数3份,抗体阳性率3.61%,犬养殖抗体阳性数1份,抗体阳性率1.2%。猫抗体阳性3份,抗体阳性率2.38%。结果表明我市的犬、猫和外地输入东莞市的肉用犬都存在衣原体的感染。 相似文献
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OBJECTIVES: To determine whether there is a relationship between species-specific mitochondrial DNA (mtDNA), especially canine and feline mtDNA, and detectable amounts of pentobarbital in previously analyzed dog food samples. SAMPLE POPULATION: 31 dog food samples previously analyzed for pentobarbital (limit of detection, 1 microg/kg). PROCEDURE: Polymerase chain reaction (PCR) analysis was performed on dog food samples by use of PCR primers specific for either canine, feline, equine, bovine, porcine, ovine, or poultry mtDNA. RESULTS: PCR amplicons specific for feline or canine mtDNA at a 0.007% (70 microg/g [wt/wt basis]) or 0.0007% (7 microg/g) level, respectively, were not found in the 31 dog food samples. Most of the 31 dog food samples had a PCR amplicon on PCR analysis when a PCR primer set capable of simultaneously detecting mtDNA of cows, pigs, sheep, goats, deer, elk, and horses was used. Results of PCR analysis by use of primers specific for bovine, swine, sheep and goat, or horse mtDNA revealed amplicons specific for bovine or swine mtDNA only in 27 of the 31 samples. Analysis of the remaining 4 samples failed to yield amplicons for any mammalian mtDNA. Pentobarbital was detected in 2 of these 4 samples. Results of PCR analysis correlated with the stated ingredient list for most, but not all samples. CONCLUSIONS AND CLINICAL RELEVANCE: Because canine and feline mtDNA were not found in a set of retail dog food samples, these results indicate that the source of pentobarbital in dog food is something other than proteins from rendered pet remains. 相似文献
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Serum samples from 1,133 dairy cows (187 herds), 3,712 ewes (103 flocks) and 1,317 adult pigs (877 herds), were tested for neutralizing antibodies against the NADL strain of bovine virus diarrhoea virus. The prevalence rate of seropositive animals was 18.5% in cattle, 4.5% in sheep and 2.2% in pigs, such seroreactors being found in 28% of the cattle herds and 18% of the sheep flocks. In all three species the rate showed considerable herd and geographical variation. In cattle the seroreactor rate was similar in herds with normal reproduction and in 62 herds with problems of repeat breeding. Of 31 pig sera containing antibodies against the NADL strain, 27 were also positive in a neutralization test for antibodies against swine fever virus (Baker strain). However, all sera showed a higher titre of antibodies against the bovine strain than against the swine fever virus. It was concluded that the immune response of the pigs had been induced by ruminant pestivirus, and not by swine fever virus. 相似文献
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Serum samples obtained from 40,927 swine at various locations in North Carolina between Aug 1, 1987 and July 31, 1988, were tested for antibodies to Trichinella spiralis, using an ELISA based on a larval T spiralis excretory-secretory antigen. In the ELISA, samples were considered to have positive results if the optical density (OD) reading was equal to or 5 times greater than the mean OD value of 4 negative-control sera from trichina-free swine. Of the 40,927 serum samples tested, 154 (0.38%) were positive by ELISA; the rate for breeding swine was 0.35% (105/30,162), and the rate for cull swine was 0.45% (49/10,765). Of the 49 seropositive samples from cull swine, 11 were from out of the state, 22 had no identification, and 16 were known to originate from North Carolina. Seropositivity had a bimodally seasonal distribution, with peaks in March and September. There was no difference between the mean age of seropositive and seronegative swine, but males were at greater risk for seropositivity than were females. Pigs from lots with less than 100 sera tested were at increased risk for seropositivity, as were pigs from the central coastal region of North Carolina. 相似文献
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Antibodies to bovine serum albumin in swine sera: implications for false-positive reactions in the serodiagnosis of African swine fever 总被引:2,自引:0,他引:2
J M Escribano M J Pastor J M Sánchez-Vizcaíno 《American journal of veterinary research》1989,50(7):1118-1122
Antibodies to bovine serum albumin were detected in swine sera by use of an immunoblotting technique. Such sera had false-positive reactions, as determined by results of African swine fever virus serodiagnostic techniques when bovine serum albumin was a contaminant in the soluble cytoplasmic antigen obtained from infected cells cultured in the presence of bovine serum. The soluble cytoplasmic antigen obtained from cell cultures infected with African swine fever virus in the presence of porcine serum did not react with the false-positive sera and, therefore, was used for African swine fever virus serodiagnostic methods, with 0% false-positive results. 相似文献