渝西地区牛羊蓝舌病的血清学调查

<正>蓝舌病是一种由呼肠孤病毒科环状病毒属的蓝舌病病毒引起的严重侵害反刍动物的非接触性烈性传染病,是OIE划定为A类,我国列为一类的动物重要疫病。本病最早于1876年发现于南非的绵羊,1906年正式命名为蓝舌病,1934年发现于牛[1],我国于1979年在云南省确定了绵羊蓝舌病的存在[2]。目前该病已广泛发生于20多个国家。蓝舌病主要感染绵羊,临床以发热、消瘦,口、鼻和胃     

云南省楚雄州牛、羊蓝舌病的血清学调查

蓝舌病是反刍动物的一种病毒性传染病,蓝舌病病毒由昆虫库蠓传播.该病能严重引起绵羊发病死亡,水牛、黄牛、山羊易感性低于绵羊.我国自1979年首次在云南省发现动物蓝舌病以来,先后已在29个省区检出蓝舌病抗体.楚雄州山羊饲养量位居云南省第一位,因此,了解蓝舌病在本州反刍动物中的感染流行情况,对今后制定该病的防制措施意义十分重大,为此目的,笔者对楚雄、双柏、姚安、元谋4县(市)的牛、羊蓝舌病进行了血清学调查.     

羔羊蓝舌病的综合防治

羊蓝舌病俗称羊瘟,是由蓝舌病毒所引起羊的一种病毒性传染病。本病的特征为:发热、消瘦,口、舌、鼻及胃肠道粘膜发炎,舌呈蓝色,肌炎和蹄叶炎,白细胞减少。1流行病学特点本病的发生多在湿热的夏季和早秋,特别是池塘,河流较多的低洼地区多发。本病主要通过库蠓而传播的,如库蠓吸吮了病羊的血液,病毒进入库蠓的体内,经过10d潜伏期,定位于唾液腺,当其再叮咬健康羊时,病毒随唾液进入健康羊体内。所以,人们认为本病是非接触性传染病,只有库蠓存在时才能传播。因此,本病的发生有严格的季节性。与库蠓本病的生活史有密切的关系。病羊和带毒动物是本…     

家畜蓝舌病的流行、诊断与防制

蓝舌病是由蓝舌病病毒引起的一种主要发生于绵羊的传染病,临床上比较少见。但其他反刍类家畜也可能被感染。该病最早于1876年发现于南非的绵羊,1906年定名为蓝舌病。1949年后,该病在全世界50多个国家或地区陆续发生。我国于1979年在云南首次发现蓝舌病,并分离出蓝舌病病毒,从而确定了蓝舌病的存在。随后湖北、四川、安徽、山西也相继报导了该病。该病分布于全球大多数地区,成为世界性危害的虫媒传染病。     

琼脂扩散试验与竞争酶联免疫吸附试验检测反刍动物蓝舌病抗体比较

蓝舌病是由环状病毒属（Orbivirus）的蓝舌病病毒（Blue-tongue virus）引起牛、羊及反刍动物的一种急性传染病。自1905年在南非首次报道了蓝舌病以来,世界上许多地区有该病发生的报道,如美国、澳大利亚、日本等,1979年我国首次在云南发现并相应分离到蓝舌病病毒,随后在湖北、安徽、四川、山西、广西等省发现该病,从而确定本病在国内的存在.     

动物蓝舌病监控系统的建立及其流行病学研究

观测绵羊蓝舌病自然发病区蓝舌病的传播规律及病毒血清型的分布，为本病的防治提供科学依据。于1995年7月起，在师宗县建立了动物蓝舌病监控动物群，经3年的观测，对19头牛监控，共采血667份，分离获得蓝舌病病毒10株，经血清学鉴定为3、4、5、15型血清型，该3个血清型均为首次分离到的国内新毒株。     

蓝舌病研究进展

蓝舌病(Ｂｌｕｅｔｏｎｇｕｅ,ＢＴ)又称绵羊卡他热,是一种主要发生于绵羊的非接触性虫媒病毒传染病,以发热、白细胞减少、颊粘膜和胃肠道粘膜严重卡他性炎症为主要特征。本病于1876年首次发现于南非,此后疫区日益扩大,目前已有50多个国家存在血清阳性动物。我国于1979年首次于云南师宗发现该病并分离到蓝舌病病毒(ＢｌｕｅｔｏｎｇｕｅＶｉｒｕｓ,ＢＴＶ)。目前,全国已有云南、新疆、甘肃、陕西、四川等29个省(市)区已检出羊ＢＴＶ抗体,许多省份的牛群中亦发现ＢＴＶ抗体阳性动物[1,2]。1　病原学ＢＴＶ系呼肠孤病毒科环状病毒属蓝舌病亚群…     

蓝舌病研究进展

动物蓝舌病是由蓝舌病病毒(BTV)引起的一种严重侵害反刍动物的传染病,国际兽医局将它规定为A类传染病,我国列为一类动物传染病.本病主要感染绵羊、山羊,牛为隐性带毒,不显病状.     

蓝舌病在全球的分布概况

蓝舌病为OIE规定的需通报疫病，我国将其列为一类动物疫病。该病已经给全球大部分流行地区造成巨大经济损失。我国于1979年首次证明该病存在，且在我国流行初期即造成大量易感动物死亡，给我国畜牧业带来了重大经济损失。但蓝舌病在我国仍属冷门研究方向，我国到底分离鉴定出多少个血清型的蓝舌病病毒，该病在我国的分布范围到底有多广？许多畜牧兽医工作者对这些问题并不是非常清楚。特别是在近年来鲜有蓝舌病引起动物发病死亡报道的前提下，人们对蓝舌病的重视程度进一步降低。本文对蓝舌病在全球的流行概况进行简要阐述，同时，对蓝舌病在我国40年的流行情况进行回顾，希望该病在我国能够得到足够的重视。     

广西牛羊蓝舌病血清学调查

蓝舌病是由病毒引起的反刍动物的一种急性、热性传染病。本病主要发生于绵羊，其特征表现为发热，白细胞减少，口腔、鼻腔和胃肠道粘膜的溃疡性炎症变化。山羊、牛等也能感染本病。蓝舌病病原属于呼肠孤病毒环状病毒属。本病最早发现于南非，现已扩散到许多国家和地区，已...     

国内生态恢复研究进展

本文介绍了生态恢复的研究进展,从生态恢复的定义、退化生态系统的指标等方面进行阐述,重点对国内在恢复生态学方面的进展做了介绍.对当前的人工草地、草地农业的研究情况做了一些概述.     

国内生态恢复研究进展

本文介绍了生态恢复的研究进展,从生态恢复的定义、退化生态系统的指标等方面进行阐述,重点对国内在恢复生态学方面的进展做了介绍。对当前的人工草地、草地农业的研究情况做了一些概述。     

Veterinary pathology in Europe in the light of the congresses of the European Society of Veterinary Pathology in the last decade

This paper presents the main trends in the activity of European veterinary pathologists in the context of their oral presentations (plenary lectures and short presentations) and posters provided during annual meetings of the European Society of Veterinary Pathology (ESVP), in the decade 1997-2006. It was found that the issue that was most often brought up in the meetings was organ pathology (566 presentations). Infectious and parasitical diseases were only slightly less frequent (548 presentations). Oncology was another common issue (404 presentations). During this decade, 52 plenary lectures were presented, 765 oral presentations and 1 072 posters. Altogether, 1 889 presentations were made, which is between 127 and 238 per year. Research by Polish scientists accounted for 3.16% of all presentations. Additionally, the subject matter discussed at the annual meetings is analysed, and the trends in the development of veterinary diagnostic pathology and broad pathology education are indicated. It is shown that veterinary pathology enhances knowledge in the field of veterinary medicine by fulfilling a cognitive and diagnostic role.     

Application of the log-linear model in the prediction of the antinuclear antibody test in the dog

To find possible associations between antinuclear antibody (ANA) pattern, ANA titer, and certain clinical changes and clinical laboratory test results in dogs, the veterinary medical records of 111 ANA-positive and 126 ANA-negative dogs were examined. Variables could not be found that had significant associations with ANA pattern (unlike the results in persons), because of the predominance of 2 patterns. A log-linear model for ANA titer adequately fit the observed frequency and included 2-way interactions between titer and polyarthritis, titer and hematologic disorders, and polyarthritis and lymphadenopathy.     

Evidence for the non-involvement of the uterus in the lifespan of the corpus luteum in the cyclic dog

Progesterone levels in peripheral blood of dogs were analysed during the cycle in which hysterectomy (n = 5) or sham surgery (n = 3) was performed as well as during the cycle of dogs (n = 5) hysterectomized at least one year prior to this study; the data were compared with the findings in control dogs (n = 3). The averages of the duration of the luteal period observed in the three experimental groups were not significantly different from those of control dogs. Immediately after surgery, the progesterone level decreased from 25 to 50% of the presurgical level, but returned to presurgical level in about four days. Prolactin levels were elevated for about 30 h after surgery. Nevertheless, the averages of the mean prolactin levels for each animal during the luteal period of the experimental groups were not significantly different from those of control dogs. It is concluded that in the dog, the uterus is not involved in the lifespan of the cyclic corpus luteum.     

Disturbance in the growth of the radius in dogs

In a 4-year period nine dogs have been met in which there was incomplete growth of the radius. The condition was unilateral in eight dogs and bilateral in one. Two were littermates. The defect is due to premature cessation of growth of the distal growth plate of the radius but the cause of this is not precisely known. It is recognized by characteristic radiographic changes in radius length, elbow joint space and premature closure of the distal growth plate of the radius. A method of surgical treatment has been devised and has proved beneficial in five dogs. Zusammenfassung. In einer Vierjahresperiode wurden neun Hunde beobachtet, bei denen ein unvollständiges Wachstum des Radius vorlag. Bei acht Hunden war der Zustand nur auf einer Seite zu finden, bei einem Hund auf beiden Seiten. Zwei der Hunde gehörten zum gleichen Wurf. Der Mangel ist auf verfrühte Wachstumseinstellung der distalen Wachstumsplatte des Radius zurückzuführen, jedoch ist die Ursache davon nicht genau bekannt. Er wird an charakteristischen radiographischen Veränderungen der Radiuslänge, des Ellbogengelenkzwischenraums und vorzeitigem Abschluss der distalen Wachstumsplatte des Radius erkannt. Es wurde eine chirurgische Behandlungsmethode entwickelt, die sich bei fünf Hunden als nutzlich erwies. Résumé. Au cows d'une période de 4 ans on a observé 9 cas de croissance incomplète du radius chez des chiens; l'anomalie était unilatérale dans 8 cas et bilatérale dans un cas; deux chiens appartenaient à la même portée. L'anomalie est due à l'arrêt prématuré de croissance de la plaque de croissance distale du radius, mais la cause n'en est pas encore connue d'une manière précise. Le diagnostic se fait par les signes radiologiques caractéristiques, modifications de la longueur du radius, de l'articulation du coude et soudure prématurée de la plaque de croissance du radius. On a élaboré une méthode de traitement chirurgical, qui s'est montrée favorable chez 5 chiens.     

Modelling the transmission of Echinococcus granulosus in dogs in the northwest and in the southwest of Morocco

Echinococcus granulosus (E. granulosus) infection was studied in 151 dogs in two regions of Morocco: 68 dogs in the northwest (Loukkos) and 83 dogs in the southwest (Tiznit). The mean prevalence rates of echinococcosis in dogs were 58.82% (46.23-70.63%) in Loukkos and 55.42% (44.10-66.34%) in Tiznit and the mean abundances of E. granulosus per dog were 75 (59-93) and 547 (504-595), respectively. The mean abundance of E. granulosus in dogs was fitted to a negative binomial distribution by the maximum likelihood techniques to define parameters. E. granulosus was aggregated in dogs in the two regions. The prevalence of infection and the abundance of E. granulosus in dogs were fitted to mathematical models in order to determine if the parasite population is partly regulated by definitive host immunity. The best fit was obtained with the models assuming the presence of immunity. The mean time of exposure to infection was similar in the two regions and ranged from 8 months to about 2 years. The infection pressures (number of E. granulosus) obtained per dog each year were 65 (8-294) in Loukkos and 476 (316-886) in Tiznit. The proportion of dogs susceptible to infection was still high along the life of the dogs in Loukkos, while it was not different from zero in old dogs of Tiznit.