Rotavirus infection in calves in Bangladesh     

S. A. Selim  K. M. S. Aziz  A. J. Sarker  H. Rahman 《Veterinary research communications》1991,15(4):327-333

Faecal samples from 434 calves under 1 year of age (307 diarrhoeal and 127 normal) were collected from three dairy farms and one village in selected areas of Bangladesh. The samples were tested by an enzyme-linked immunosorbent assay (ELISA) to detect the presence of rotavirus antigen. Of 402 dairy calves tested, 28 (7.0%) were positive, of which 21 (7.2%) were from diarrhoeic calves and 7 (6.3%) from non-diarrhoeic calves. Rotavirus infection varied from farm to farm (2.7–9.2%) and there was no positive response from any of the 32 village calves. Rotavirus was most commonly found in calves of 1 week of age or less (up to 22.2% in one group) but was not found in any calves later than 6 months of age. More than 80% of rotavirus-positive samples from diarrhoeic calves exhibited a titre of 128 or more (geometric mean 345±4.5), whereas non-diarrhoeal calves had titres less than or equal to 128 (geometric mean=29±1.9), suggesting that rotavirus infection in calves in Bangladesh was mostly associated with diarrhoea.  相似文献   

2型猪链球菌的血清学鉴定   总被引：41，自引：0，他引：41  

黄毓茂  黄引贤 《中国兽医学报》1995,15(1):63-65

本试验首次证实了２型猪链球菌在我国的存在，采用玻片凝集、琼脂扩散及毛细管沉淀等３项试验，对１９９０年以来广东某猪场断奶仔猪暴发流行的败血症、脑膜炎及关节炎病猪中分离的１５株链球菌进行了血清学鉴定。结果表明：１５株链球菌均为２型猪链球菌；用高压法提取抗原进行沉淀反应，其结果比酸热法提取抗原具有简便、敏感、特异性强的特点。  相似文献   

ONCHOCERCA GUTTUROSA IN Danish cattle. Prevalence, geographic distribution and host-vector relationships.     

N Kolstrup 《Acta veterinaria Scandinavica》1975,16(1):1-13

1. Onchocerca gutturosa is reported in Danish cattle for the first time. Microfilariae were found in 38 (9.4%) of 406 cows that were 2 years or older.
2. Microfilariae were not randomly distributed throughout the skin but were concentrated in the umbilical area.
3. No difference in prevalence was observed between breeds of cattle.
4. Most of the infected cows had grazed on fields close to streams that contained Simulium ornatum, the vector of O. gutturosa.
5. Differences in preferred biting sites of S. ornatum from cow to cow were correlated with the arrangement of hair.

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Prevalence of headshaking within the equine population in the UK          下载免费PDF全文

S. E. Ross  J. K. Murray  V. L. H. Roberts 《Equine veterinary journal》2018,50(1):73-78

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靖边县2010年—2012年羊布鲁菌病血清学调查     

陈科睿  汪洁  李俊玲  盛丽芬  贾凤菊  盛江  韩永帅  武青茂  米光明  高媛媛  刘文娟  杨鸣琦 《动物医学进展》2015,(3):128-130

为了解陕西省靖边县羊布鲁菌的感染及分布状况,自2010年1月—2012年12月,采集陕西省靖边县羔羊、种羊等55 059只的羊血清样品,通过试管凝集反应对布鲁菌病抗体进行检测,分析羊布鲁菌的分布情况。结果显示,55 059份羊血清样品共检出阳性样品78份,其中羔羊样品阳性71份。种羊养殖场和养殖户因引进布鲁菌隐性种公羊造成2个养殖场出现77只病羊,4个养殖户出现117只病羊。羔羊布鲁菌抗体阳性率呈增高趋势,由2010年的0.04%上升到2012年的0.29%;由于引种造成的布鲁菌感染率较高。  相似文献   

鸽新城疫的流行与防控     

叶有超  胡俊峰  韩青松  高小龙  刘素贞  段龙川  简永利  涂宜强  董丽艳 《畜牧与饲料科学》2020,41(5):107-111

鸽新城疫是由新城疫病毒感染鸽群引起的传染病, 在世界各国鸽场均有流行。介绍了鸽新城疫流行情况及特点, 流行毒株的基因型、病毒的毒力、病毒的抗原特性, 提出在做好鸽场内生物安全控制和精细化管理基础上, 使用市售新城疫疫苗进行合理免疫是鸽新城疫防控的关键。  相似文献   

Self-Reported Injuries in Indoor Gym-Based Rock Climbers: A Retrospective Study of Predictors of Prolonged Injury and Seeking Medical Care     

《The Forestry Chronicle》2023,34(3):311-317

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The Distribution of Bovine Trypanosomosis in Zimbabwe and an Evaluation of the Value of an Anti-trypanosomal Antibody Detection ELISA as a Tool for Monitoring the Effectiveness of Tsetse Control Operations     

Van den Bossche P  Shumba W  Njagu C  Shereni W 《Tropical animal health and production》2001,33(5):391-405

Tsetse have been cleared from large areas of Zimbabwe during the past 65 years. In most areas, they are prevented from re-invading cleared areas by barriers of odour-baited, insecticide-treated targets. A trypanosomosis survey was conducted to determine the effectiveness of such barriers against re-invasion and to confirm the absence of tsetse in areas where they had previously been eradicated. Parasitological diagnostic methods and an anti-trypanosomal antibody detection enzyme-linked immunosorbent assay (antibody ELISA) were used. The prevalence of trypanosomal infections in the tsetse-cleared areas was generally low. However, the prevalence of anti-trypanosomal antibodies was unexpectedly high in some areas. This high proportion of cattle with antibodies could, in most cases, be explained by recent or historic information on the distribution and density of tsetse. The results from the survey demonstrated the value of anti-trypanosomal antibody detection as an additional sensitive tool for monitoring the effectiveness of tsetse control operations.  相似文献   

An Abattoir Survey on the Frequency of Fatty Liver Syndrome in Dairy Cows from the Suburbs of Tehran     

Raoofi A  Bazargani TT  Tabatabayi AH 《Tropical animal health and production》2001,33(1):15-19

One hundred and six Holstein and Holstein x native cows were inspected before and after slaughter, and liver samples were taken. The fat content of all the liver samples was estimated by an extraction method (Soxhlet). The livers of 29 cows (27%) were classified as fatty. Seventeen of the animals were newly calved, 47 were non-pregnant, 33 were pregnant and 9 were dry, the median values for the fat content of their livers being 60.6, 34.4, 34.7 and 33.8 mg/g, respectively. The median concentration of liver fat in the first group was significantly different from that in each of the other groups (p < 0.01).  相似文献   

天敌对三化螟的捕食功能的血清法评价   总被引：4，自引：0，他引：4  

周汉辉 《植物保护学报》1992,19(3):193-197

试验用血清法检验了几种主要的捕食性天敌文对三化螟成虫和幼虫的捕食反应。化测定时间里,在秧田每天每亩成虫被蜘蛛捕食的量为9.94%,在大田每天每亩为620.2头。对幼虫的检验结果,转株幼虫有近1/10被捕食。结论是:蜘蛛类在三化螟成虫盛发期可起到一定的作用,对转株幼虫的杀伤作用较大。但由于天敌的数量消长和害虫的数量消长缺乏同步性,故达不到理想的控制效果。  相似文献