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《上海畜牧兽医通讯》2017,(1)
正伪狂犬病严重危害全球养猪业健康发展,我国也不例外。一些发达国家通过免疫基因缺失苗和实施鉴别诊断,及时淘汰带毒猪,已成功在家猪中净化了伪狂犬病。本文对伪狂犬病毒的主要流行病学特征、规模猪场伪狂犬病流行概况、伪狂犬病净化的机遇和挑战进行了详细综述,并提出了相关防控净化建议。 相似文献
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《养殖与饲料.饲料世界》2017,(4)
猪伪狂犬病是由伪狂犬病病毒引起的多种动物共患病,是猪的重要繁殖障碍性传染病之一,规模化种猪场伪狂犬病的净化已成为一种趋势。本文在介绍猪伪狂犬病的流行特点及病原特性的基础上,从养猪场老板的决心、猪场的外部环境和硬件设施及生物安全措施、饲养管理和兽医防疫制度、多点式生产、全进全出和猪群管理、监测净化、周围猪场的控制、老鼠等野生动物的控制、加强其他主要传染病的防控等方面介绍了伪狂犬病净化的注意环节。 相似文献
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1猪伪狂犬病的防控1.1伪狂犬病的历史和现状狂犬病是一种老病,1931年诊断出来,现在基本上能控制。伪狂犬病最早发现于牛,类似狂犬病。后来利用TK/gE基因缺失疫苗免疫和gE-ELISA鉴别诊断方法,检出和淘汰野毒感染猪,逐步建立了伪狂犬病阴性猪群。欧美发达国家根除了家猪的伪狂犬病。野猪是潜在的传染源。我国大型种猪场伪狂犬病净化也取得了很好的进展。1.2临床表现和流行病学特征2011年冬季东北部分地区和2012年3~7月中原周边省份都发生疑似伪狂犬病的病例,主要 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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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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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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