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《畜牧兽医科技信息》2020,(5)
正家畜的心血管疾病按照病因可分为先天性和后天性二大类。先天性心血管疾病包括心室中隔缺损、主动脉狭窄等,先天性疾病可能与品种相关;后天性心血管疾病包括慢性瓣膜疾病、扩张性心肌病等。一般后天性比先天性更常见,最常见的是慢性瓣膜疾病。 相似文献
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白守兄 《上海畜牧兽医通讯》2008,(3):103
犬脱毛症是指患犬在非正常换毛季节呈现局部性或全身性被毛脱落,往往伴有其他的症状.脱毛症分为先天性和后天性两种.先天性见于遗传;后天性脱毛症多继发于全身性疾病如神经性疾病、内分泌疾病(甲状腺和垂体失调,睾丸和卵巢功能障碍)、发热性疾病(肺炎或传染病等)、营养障碍、中毒性疾病和某些恶病质等,外界刺激也可引起脱毛症.脱毛不仅会影响犬的美观,而且还可能会传播给主人疾病,因此必须防重于治.笔者根据几年的临床经验总结其发病诱因及防治措施如下: 相似文献
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膈疝是指腹腔脏器经过膈肌薄弱点或裂隙进入胸腔所形成的一种疾病。本病可分为先天性和后天性两类。有调查研究表明,犬猫膈疝病例76.8%为创伤性,9.6%为先天性的,13.8%发病原因不明。先天性膈疝是由于横膈先天性发育不全或出生前横膈受到损伤引起。后天性膈疝常由于交通事故、高处坠落或者其他强烈冲击导致。2010年4月,南京农业大学动物医院接诊了1例幼猫膈疝病例,经手术治疗,取得了比较满意的治疗效果。 相似文献
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以国际标准强毒Ｒ株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离ＭＧ,并收集感染鸡所产蛋分离ＭＧ。结果表明,人工感染４８小时后上、下呼吸道及肺已被全面感染,９６小时气囊已被感染,１２０小时输卵管已能分离到ＭＧ,卵巢始终分离不到ＭＧ。人工感染鸡自１４４小时便能在其所产蛋中分离出ＭＧ。药物治疗能在７２小时内消除感染,油乳剂苗则需２４天后逐渐降低蛋内ＭＧ分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内ＭＧ,但以研制的种蛋浸泡剂药浴效果为最好。 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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