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通过对内蒙古饲料工业现状、饲料工业面临的挑战和存在的主要问题进行分析,明确了内蒙古发展饲料工业的优势和有利条件.在今后一个时期,内蒙古饲料工业发展的总体思路应为:坚持发展与提高并重,调整优化饲料工业产业结构,努力为饲料工业发展创造良好的外部环境,促进内蒙古饲料工业持续、稳步、健康发展. 相似文献
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通过对内蒙古饲料工业现状、饲料工业面临的挑战和存在的主要问题进行分析,明确了内蒙古发展饲料工业的优势和有利条件.在今后一个时期,内蒙古饲料工业发展的总体思路应为:坚持发展与提高并重,调整优化饲料工业产业结构,努力为饲料工业发展创造良好的外部环境,促进内蒙古饲料工业持续、稳步、健康发展. 相似文献
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饲料霉变是困扰世界饲料业和畜牧业的一个难题.本文详细介绍了饲料霉菌及其霉菌毒素的分类、霉菌生长繁殖的主要影响因素,以及饲料霉菌和毒素的分析测定方法,并对饲料霉菌对动物的危害以及对饲料营养价值的影响进行了系统分析和总结. 相似文献
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1 提高饲料质量安全及检测分析水平的重要性 饲料质量的好坏,关系到动物生产性能的发挥和畜牧、水产养殖业的经济效益,关系到肉蛋奶等动物产品的数量与质量,关系到环境保护与资源的有效利用,还关系到动物和人类的安全与健康.随着畜牧、水产养殖业的不断工业化和集约化发展,饲料的质量安全问题比以往任何时候都更受到国内外科研、生产乃至政府部门的普遍关注.而饲料生产中的每个关键环节的质量保证、质量控制和最终产品的质量监督都是必须伴随、依靠检测分析的,分析检测技术水平的高低决定着饲料的质控效果.因此,对饲料的营养性能和卫生、安全品质等进行检测势在必行. 相似文献
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在人们追求健康生活的今天,面对生化药品带来的严重副作用,绿色无污染、无毒副作用、无残留的饲料及饲料添加剂必将被越来越多的人所关注.而饲料和饲料添加剂的安全问题则是其中的关键环节.主要对饲料和饲料添加剂安全问题的的提出、现状以及造成的危害进行了阐述,并对产生安全问题的原因进行了分析,提出了解决问题的对策及措施. 相似文献
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由于现在近红外光谱(near infrared spectroscopy,NIR)分析技术所独具的特点,NIR已成为近年来发展最快的快速分析测试技术,尤其在饲料工业在线分析中的应用,产生了巨大的经济和社会效益.尽管NIR技术在饲料工业上的应用起步较晚,但越来越被人们所重视.为使广大饲料生产与检测行业对NIR及在饲料工业中的应用情况有所了解,文章分别对NIR分析技术的发展概况、测定原理及特点、分析测定过程、注意事项及在饲料工业中的应用等几方面进行讨论. 相似文献
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分析饲料因素对奶牛生产的影响,结果表明:饲料影响奶牛的生长发育、繁殖、泌乳量及健康.根据分析结果,从饲料管理、合理日粮配方、科学饲喂制度、合理提高泌乳量等四方面提出饲料因素对奶牛生产风险的规避措施. 相似文献
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本文对目前世界海水养殖鱼类的主要养殖种类、产量、地区分布和食性组成等作了一个较为全面的介绍和分析.结合我国的实际情况,分析了我国海水鱼类养殖远远落后于淡水鱼类养殖的原因.并指出我国海水鱼类营养研究与饲料工业滞后是制约我国海水鱼类养殖发展的重要原因之一,比较使用人工配合饲料和鲜杂鱼饲料的优劣,分析了我国目前主要使用冰鲜下杂鱼饲料的危害及对我国海水鱼类养殖可持续发展的负面影响.分别介绍了我国主要海水养殖鱼类牙鲆、大鲮鲆、真鲷、七星鲈、尖吻鲈、红鼓鱼(美国红鱼)、石斑鱼、大黄鱼在世界的养殖概况和它们的营养需要研究进展情况.然后阐述了海水人工配合饲料配方设计的基本原理和设计生产绿色环保饲料的关键技术. 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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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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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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Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF
Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo. 相似文献