06-6.猪病诊断和控制研讨班 Respiratory disease 呼吸系统疾病及其它细菌性疾病–othe.ppt

Respiratory disease -Other 呼吸道疾病 - 其它疾病Bob Morrison DVM, MBA, PhDSwine GroupUniversity of MinnesotaASCARIS (ROUNDWORMS) 蛔虫蛔虫nProduced by larval migration through lung 由于幼虫移行到肺脏而引起nPetechiae in lung 肺脏有淤点nWhite spots on liver 肝脏有白点nPresence of adult worms in intestine 肠道有成虫nVery common cause of cough in outside pigs 常常引起猪的咳嗽Interstitial pneumonia with petechial and ecchymotic hemorrhages associated with ascarid migration 蛔虫移行引起的间质性肺炎，肺有淤点和出血斑Interstitial pneumonia with petechial and ecchymotic hemorrhages associated with ascarid migration 蛔虫移行引起的间质性肺炎，肺有淤点和出血斑METASTRONGYLUS LUNGWORMS 后圆线虫属后圆线虫属(猪肺虫)nSwine lungworm 猪肺虫 - dry persistent cough 持续的干咳nEmphysema in diaphragmatic lobes (white, spongy) 膈叶气肿（白色，海绵状）nAdult worms seen in bronchi 支气管里可见成虫nNot common in Midwest 在中西部不常见nEarthworms are intermediate host. Therefore, this is most commonly seen in outside pigs. 土源性寄生虫是中间宿主，所以在户外饲养的猪很常见Cross section of adult worms in the bronchi of a pigs lung. 在一头猪的肺脏里面的成虫的横截面Whole specimens. They are long (up to 6 cm), slender, white nematodes found in the bronchi of pigs. 整条成虫的标本。虫体长（6cm）而细，能在支气管中发现。Actinobacillus suis 猪放线菌nA. suis is a commensal opportunistic pathogen in swine. In recent years, increasing incidence of clinical signs associated with A. suis has been observed in high health herds in North America. 猪放线菌是一种共生的条件致病菌。近年，北美的高度健康的猪群与猪放线菌相关的临床疾病发病率升高。nA. suis isolates are genotypically and phenotypically very similar, regardless of their source, and they contain genes similar to, but not identical to genes of A. pleuropneumoniae,尽管来源不同，猪放线菌的分离株之间基因型和表型都非常相似，它们的基因与胸膜肺炎放线菌相似，但不相同。Clinical signs 临床症状nPiglets and growing pigs 仔猪和生长猪Sudden death. 突然死亡Discoloration of skin (blue). 皮肤颜色改变（蓝色）High fever. 高烧Coughing. 咳嗽Pneumonia. 肺炎Skin lesions (not to be confused with Erysipelas).皮肤病变（不要与丹毒混淆） Arthritis. 关节炎Lameness. 跛行Septicaemia. 败血症Acute pleuropneumonia in a pig experimentally infected 14 hours proviously with Actinobacillus suis. 实验性感染猪放线菌实验性感染猪放线菌14小时的病变，小时的病变，急性肺炎急性肺炎