共查询到20条相似文献,搜索用时 78 毫秒
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自 1 996年至今 ,在山东、河北局部地区 ,肉仔鸡群暴发鸡痘的病例逐年增多。因其高发病率、高死亡率 ,严重阻碍生长发育 ,给养殖场带来巨大的经济损失 ,必须引起高度的重视。1 发病特点1 .1 发病季节 :春、夏、秋、冬各季均可发生 ,以秋末冬初为主 ,特别是在蚊子消失半个月左右 ,是鸡痘最为集中流行的时期。1 .2 发病日龄 :在流行期间 ,各种日龄的肉仔鸡均有发病的可能 ,集中表现在 1 5~ 45日龄的肉仔鸡群。2 临床状况皮肤型 :最为常见。表现在冠、肉髯、喙部、眼睑、鸡爪等部位的结节病灶。有许多病例 ,在背部、腹部、尾部、颈部等有… 相似文献
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禽痘是由禽痘病毒引起的家禽和鸟类的一种缓慢扩散的传染病,通常在临床上可分为皮肤型和粘膜型,也可表现为混合型。禽痘多通过机械性传播使受损伤的皮肤和粘膜感染,其中蚊虫叮咬是最主要的传播因素。任何日龄、性别和品种的鸡均可感染,粘膜型和混合型感染严重者引起大批死亡,给养殖业造成巨大经济损失。2004年3月15日广 相似文献
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鸡痘是由痘病毒引起的接触性传染病,主要发生于鸡和火鸡,幼鸽也可发生,水禽易感性较低。本病主要通过皮肤或粘膜的伤口感染,病毒还可通过泪管至喉部引起上呼吸道感染,上呼吸道及口腔粘膜上皮细胞对病毒的易感性最高。蚊、蝇、螨,蜱、虱等吸血昆虫,特别是蚊了在传播本病中起到重要的媒介作用。 相似文献
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凡有鸡的地方,就有鸡球虫。随着科技的发展,结合我们近年来的临床实践,总结出鸡球虫病的发病特点及防治措施。 相似文献
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S E McDonald L J Lowenstine A A Ardans 《Journal of the American Veterinary Medical Association》1981,179(11):1218-1222
During a 1-month period at a quarantine station, an epornitic of avian pox occurred in blue-fronted Amazon parrots (Amazona aestiva). Clinical signs included conjunctivitis, blepharitis, and varying degrees of anorexia and respiratory distress. Lesions included periocular ulcerations and scabs and necrotic plaques in the oral cavity. Histologically, the lesions consisted of epithelial hyperplasia, secondary inflammatory changes, and eosinophilic inclusions which, by electron microscopy, were shown to contain poxvirus. When chicken embryos were inoculated with material from eyelid scabs and pharyngeal plaques, lesions of avian pox developed on the chorioallantoic membrane. The death rate of infected birds was high because of secondary bacterial and fungal infections, but uncomplicated cases were usually self-limiting. Periocular lesions also developed in 2 other species of psittacine birds housed in the same facility. 相似文献
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Avian pox in a whistling swan 总被引:1,自引:0,他引:1
R D Montgomery K A Chowdhury J G Reese 《Journal of the American Veterinary Medical Association》1980,177(9):930-931
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鸡痘是由鸡痘病毒引起的一种接触性传染病。通常分为皮肤型和黏膜型。前者以皮肤(尤以头部皮肤)的痘疹,继而结痂、脱落为特征;后者可引起口腔和咽喉黏膜的纤维素性坏死性炎症,常形成假膜,故又名鸡白喉。本病对各品种和各年龄的鸡均易感,雏鸡更易感,特别是大群鸡场危害严重。笔者曾在实践中遇到一起混合型鸡痘,现报告如下。 相似文献
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Pledger A 《The Canadian veterinary journal. La revue veterinaire canadienne》2005,46(12):1143-1145
An adult mourning dove (Zenaidura macroura) was presented with dyspnea, poor body condition, and poor flight endurance. Nodular lesions were visible on the cere, both feet, and skin covering the pectoral region. Histopathological examination revealed epithelial hyperplasia with eosinophilic intracytoplasmic inclusion bodies consistent with Avipoxvirus infection. 相似文献
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