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(接2011-07《新饲料》45页)3.2蛋白酶在猪上的应用断奶期是仔猪生长的关键时期,这一时期酶生产容易出现故障,最受影响的酶是脂肪酶,但是这里我们主要关注的是蛋白酶。3.2.1试验材料试验材料同3.1.1。3.2.2试验动物及试验结果试验结果见表9、表10。Lallès等(2004)发现,仔猪断奶期会出现肠道紊乱现象。采食量剧 相似文献
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为了测定平湖、萧山两个王浆高产蜂种(下称平湖、萧山蜂种)的王浆等生产性能及对浙江省各地不同生态条件的适应性,以确定其推广价值,并树立起蜂种改良示范的典型,于1988年春季开始进行本试验。试验材料与方法 (一)试验材料:平湖县王进、周良观和萧山市洪德兴蜂场培育的产卵蜂王和有关县(市)当地带蜂王的蜂群各若干群。 (二)试验方法:在有关县(市)选择 相似文献
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一、材料和方法 (一)试验材料:试验鸡来自西北农业大学和陕西汉中地区畜牧研究所。其中纯系新杂_(444)174只,法国来航208只,合计382只。新杂_(444)于1988年7月17日出壳,进入试验时日龄为175±5.5天;法国来航于1988年4月21日出壳,进入试验时日龄为248.8±1.3天。两品种分户饲养,分户试验,分户记录,不存在什么对比关 相似文献
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<正> 为了探究早生桑对原蚕发育及卵质卵量的影响,1988年春特作此试验。一、试验材料及设区处理(一)试验材料1.供试桑品种:予50,荷叶早生。以湖桑32号为对照。2.供试原蚕品种:中系为晋_3,日新晋_4。(二)试验设区及处理 相似文献
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对有关同龄老龄蛋鸡不同强制换羽期的试验效果对比材料迄今未见详细报导,为进一步了解、探索不同强制换羽期对同龄老龄蛋鸡的试验效果,提供较佳强制换羽期的科学依据,特进行了如下试验: 材料与方法 (一)供试材料 1.供试鸡品种、周龄及场所:本试验选用相今镇东杲村养鸡专业户顾克森同志饲养的69周龄的京白823商品代产蛋鸡。 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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