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乳房炎是奶牛常见病和多发病,也是奶牛常见的三大病之一,严重影响牛奶产量和质量,严重性急性乳房炎还会导致奶牛败血症或乳房废弃。目前治疗奶牛乳房炎主要使用抗生素 相似文献
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乳房炎是奶牛中最常见的疾病,给奶业造成的经济损失是巨大的。虽然应激或外伤可引起乳房炎,但乳房炎的主要致病因素是细菌或其它微生物。 一、奶牛乳房炎的诊断 1、乳房检查 当检查奶牛乳房时,可明显看到 相似文献
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奶牛乳房炎是奶牛乳腺炎组织发生炎症的过程、是奶牛乳房乳腺叶间组织或腺体发炎而形成的乳房疾病.本文通过对临床中遇到的一个病例,根据主诉及对奶牛进行临床检查,确诊为乳房炎. 相似文献
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大理市奶牛养殖业较为发达,但往往由于忽略疾病防治而造成巨大经济损失。其中奶牛乳房炎是奶牛养殖过程中的常见病,这是奶牛乳腺因感染、外伤或化学刺激所引起的炎症反应,是危害奶牛最主要的疾病,临床型乳房炎是乳房腺体或乳腺间结缔组织发炎或两者同时发炎。大量的调查表明,在奶牛中临床型的乳房炎大约占5%~10%,直接造成牛乳的废弃、产乳量下降、牛乳价值降低等经济损失。 相似文献
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在奶牛饲养过程中,乳房炎是奶牛常见的疾病之一,奶牛乳房炎发病初期没有明显的临床表现,很容易被饲养人员忽视,乳房炎会导致奶牛产奶量下降,给奶牛养殖业造成经济损失,因此,发展奶牛养殖业首先要做好预防工作。1发病原因奶牛乳房炎具有传染性,牛舍环境温度和湿度过高或过低都对其有影响,乳房炎可在牛舍之间或牛与牛间直接传播,牛舍通风不好,舍内有灰尘,不定期消毒,舍外奶牛粪便乱放,清理不及时,挤奶的 相似文献
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奶牛初乳期即奶牛分娩后7天以内挤奶的时期,此时如果患乳房炎,由于乳房水肿造成乳房毛细血管破裂,血细胞或血蛋白进入乳房,个别奶牛伴有乳房出血症状,如果不及时治疗,很快会使病情恶化,进一步发展为化脓性或坏疽性乳房炎。 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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