兔病毒性出血症的研究

兔病毒性出血症是一种烈性传染病,主要发生于膘情较好的青、壮年兔,常在冬、春季节流行,临床症状和病理变化以急性败血症为特征。典型病变为肺有数量不等、大小不一的出血病灶,气管粘膜严重充血,呈紫红色,该病毒抗原能凝集人O型红细胞,这种血凝性可被病兔康复血清抑制。取病兔肝、脾,肾制成匀浆,用甲醛灭活制成的疫苗,安全性好,产生免疫力性,保护率达95％以上。     

三角帆蚌疾病流行病学研究

1994—2002年，通过对1695个蚌病病例流行病学资料的收集、临床诊断以及病理学、病原学检查，基本探明了蚌病的主要寄生性和细菌性病原生物，同时发现了腔肠动物等主要敌害生物；初步提出了三角帆蚌疾病种类及其相应发病率。蚌病与鱼病的周年流行规律有明显不同，每年的3—9月为蚌病高发期，与三角帆蚌月龄亦有相关性：手术接种后1～2个月，14～15个月，20～23个月为明显的蚌病高发阶段。统计结果还表明蚌病发生与手术消毒、施肥等日常管理操作．及水体生态环境密切相关。蚌病一般呈“亚急性”或“慢性”型，不应统称为“蚌瘟”病。忽视寄生虫危害的严重性，可能是蚌病防治难的重要因素。     

陕西省猪伪狂犬病流行病学调查和WG株的分离鉴定

应用gE-EL ISA法对陕西省部分地区6个集约化猪场的187份猪血清进行了伪狂犬病毒(P seu-dorab ies v irus,PRV)野毒感染检测,并对疑似伪狂犬病发病仔猪的内脏及脑组织进行了病毒分离鉴定。结果显示,陕西省猪PRV野毒抗体平均阳性率为28.76%,最高为48.98%,最低为0;分离毒株可致PK-15细胞出现典型的圆缩、集聚,脱落等细胞病变,连续传代后,CPE出现的时间稳定在20 h左右;细胞培养物和病料混悬液接种家兔均出现典型奇痒症状,PCR反应扩增出PRV gE基因中长度为612 bp的特异性片段。表明本试验分离的病毒为PRV,并将其命名为PRV W G株。     

天水地区小麦条锈病流行规律研究简报

本文报道了天水地区小麦条锈菌的越夏越冬高度和主要地区范围,因降雨(雪)多少和温度高低的变化情况,以及秋、春季的发生发展规律,并且首次证明,天水地区小麦条锈菌的秋季菌源可随风传入关中,成为关中秋季发病的主要菌源。此外,还提出了防治策略。     

Molecular characterization of Korean rabies virus isolates

The nucleoprotein (N) and glycoprotein (G) of 11 Korean rabies virus (RABV) isolates collected from animals diagnosed with rabies between 2008 and 2009 were subjected to molecular and phylogenetic analyses. Six isolates originated from domestic animals (cattle and dogs) and five were obtained from wild free-ranging raccoon dogs. The similarities in the nucleotide sequences of the N gene among all Korean isolates ranged from 98.1 to 99.8%, while those of the G gene ranged from 97.9 to 99.3%. Based on the nucleotide analysis of the N and G genes, the Korean RABV isolates were confirmed as genotype I of Lyssavirus and classified into four distinct subgroups with high similarity. Phylogenetic analysis showed that the Korean isolates were most closely related to the non-Korean NeiMeng1025B and 857r strains, which were isolated from rabid raccoon dogs in Eastern China and Russia, respectively. These findings suggest that the Korean RABV isolates originated from a rabid raccoon dog in Northeastern Asia. Genetic analysis of the Korean RABV isolates revealed no substitutions at several antigenic sites, indicating that the isolates circulating in Korea may be pathogenic in several hosts.     

Epidemiology of canine glaucoma presented to University of Zurich from 1995 to 2009. Part 2: secondary glaucoma (217 cases)

Objective To investigate the epidemiology of canine secondary glaucomas in the cases presented to the University of Zurich, Vetsuisse Faculty (UZH) from 1995 to 2009 focusing on possible risk factors for developing secondary glaucoma in this population of dogs. Methods Information was obtained from the computer database of patients examined by members of the UZH Ophthalmology Service, between January 1995 and August 2009. Secondary glaucoma was diagnosed based on the presence of antecedent eye conditions. The data was evaluated for breed, gender, age at presentation, and for antecedent eye conditions known to cause glaucoma including anterior uveitis of unknown cause (AU), lens luxation (LL), intraocular surgery (SX), intraocular neoplasia (IN), unspecified trauma to the globe (T), ocular melanosis (OM), hypermature cataract (PY), hyphema (HY), and six other less frequent conditions. Results A total of 217 dogs were diagnosed with secondary glaucoma from 1995 to 2009. The age of the dogs with secondary glaucoma ranged between 88 days and 19 years (mean 7.7 ± 3.6 years). Data suggested a predisposition for secondary glaucoma in the Cairn Terrier and the Jack Russell Terrier breeds from 2004 to 2009. Common causes of secondary glaucoma from 1995 to 2009 were AU (23.0%), LL (22.6%), SX (13.4%), IN (10.6%), T (8.3%), OM and PY (both 6.9%) and HY (3.23%). Conclusion The report presents the epidemiology of secondary glaucomas presented to UZH from 1995 to 2009. Fourteen risk factors were recorded for secondary glaucoma. This is the first paper documenting OM in the Swiss Cairn Terrier dog population.     

Epidemiology of canine glaucoma presented to University of Zurich from 1995 to 2009. Part 1: Congenital and primary glaucoma (4 and 123 cases)

Objective To investigate the epidemiology of canine congenital and primary glaucoma in the cases presented to the University of Zurich, Vetsuisse Faculty (UZH) from 1995 to 2009. Methods Information was obtained from the computer database of patients examined by members of the UZH Ophthalmology Service, between January 1995 and August 2009. Congenital and primary glaucoma was diagnosed based on the age of onset, the lack of evidence of any antecedent eye conditions, and/or the presence and severity of iridocorneal angle defects. The data was evaluated for breed, gender and age at presentation. Results A total of 5984 dogs presented to the UZH Ophthalmology service between 1995 and 2009. Four dogs of different breed were diagnosed with congenital glaucoma and 123 dogs were diagnosed with primary glaucoma. For the primary glaucomas the overall male to female ratio (M:F) was 1:1.41 and the age of onset ranged from 0.12 to 18.3 years with a mean of 7.3 ± 3.6 years. Data suggested a predisposition for primary glaucoma in the Siberian Husky, Magyar Vizsla and Newfoundland from 2004 to 2009. Conclusion The report presents the epidemiology of canine congenital and primary glaucomas presented to the UZH from 1995 to 2009. A previous suspicion of predisposition for primary glaucoma in the Newfoundland dog (n = 6) and the Magyar Vizsla breed (n = 8) was confirmed.     

Breed differences in the proportional morbidity of testicular tumours and distribution of histopathologic types in a population-based canine cancer registry

Histologically verified tumours submitted to the Norwegian Canine Cancer Register from 1990 to 1998 were studied (n=14,401). The proportion of testicular tumours (n=345) was 2.4%, and the breakdown of histological tumour diagnoses is presented. The frequency of the most common histopathological types was 33% interstitial (Leydig), 26.4% Sertoli and 33.9% seminomas/germ cell tumours. The average age at diagnosis was 10 years, but was significantly lower for Sertoli cell tumours (8.6 years) than for the other tumour types. Following a histopathological re-evaluation, 22.5% of the original tumor diagnoses were modified. Proportional morbidity ratios were calculated and individuals from the breeds Shetland sheepdog and Collie were five times more likely to have testicular tumours than the overall average for the registry. Breed differences in the distribution of histopathologic types were observed. Shetland sheepdog and Collie were most commonly diagnosed with Sertoli cell tumours, while all tumours from Norwegian elkhound in this material were seminomas.     

犬细小病毒的病例分析

为了解西安地区犬细小病毒感染的流行病学和临床诊疗情况,给该病的防制提供科学依据,对一年期间前来西北农林科技大学西安宠物医院就诊的70例犬细小病毒感染病例进行了临床调查研究,并对部分病例诊疗过程中的血液白细胞变化进行了监测.西安地区犬细小病毒感染一年四季均可发生,以深秋和冬春季多发;感染犬以7周龄～6月龄的断奶犬最多;感...     

刚察县伊克乌兰乡牦牛皮蝇蛆感染情况调查

采用剖检法与触摸法,在10、11月份剖检,翌年3、5月份临床检查未使用消毒剂防控的牦牛皮蝇幼虫感染情况.结果剖检牦牛皮蝇一期幼虫平均感染率为61.54％,平均感染强度34.13条.翌年3、5月份触摸检查牦牛背部皮下皮蝇幼虫寄生形成的瘤疱和成熟第三期幼虫脱落形成的皮肤虫孔,3年的平均感染率61.04％,平均感染强度4.9...