共查询到20条相似文献,搜索用时 62 毫秒
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畜禽产品中抗生素残留越来与受到人们的重视,由于有些抗生素无法随着食物的加热而完全的分解,因此对人们的身体健康构成了严重的威胁。为了促进畜禽饲养抗生素的合理使用,本文对畜禽饲养中不合理使用抗生素的危害及原因进行了分析。 相似文献
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减少使用抗生素饲料添加剂的途径 总被引:6,自引:0,他引:6
抗生素饲料添加剂的大量使用,甚至滥用,必然给人类和动物的健康造成危害。减少使用抗生素饲料添加剂的几种途径有:开发利用天然物、中草药饲料添加剂;研制、推广微生态制剂;合理使用有机酸;定期进行预防接种;积极改善饲养卫生与营养条件。 相似文献
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王晶晶 《国外畜牧学(猪与禽)》2016,(8)
正加拿大现在允许在标记无抗生素饲养的产品中使用某些化学抗球虫药。加拿大食品检验局修改了其在食品上使用的"无抗生素饲养"标签的标准,以更加符合美国的标准。8月5日,加拿大政府机构发布了解释其标准修改的消息。此举措使禽肉与猪肉和鱼肉一起允许化学抗球虫药出现在"无抗生素饲养"的标签中。在给其成员国的一份时事通讯中,加拿大禽类蛋 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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