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《饲料与畜牧》2005,(6):6-6
我国第一部规范畜牧业的法律一《中华人民共和国畜牧法(草案)》于今年8月23日提请十届全国人大常委会第17次会议审议。草案有三大看点: 1.突出畜禽遗传资源保护为了保护和合理利用畜禽遗传资源,草案对畜禽遗传资源的保护作了全面规定;一是建立基本制度,包括畜禽遗传资源保护制度,畜禽遗传资源的鉴定、评估制度等。二是明确中央和地方政府在畜禽遗传资源保护中的责任,将建立畜禽遗传资源基因库、保护场、保护区、作为主要的保护手段。三是对畜禽遗传资源的进出境管理作了明确规定,境外的机构、个人取得原生我国的畜禽遗传资源必须经有关部门批准,对其中国家级畜禽遗传资源保护名录中的畜禽遗传资源,要按照共享惠益原则分享研究和开发畜禽遗传资源所获得的利益。 相似文献
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畜禽遗传资源是宝贵的自然文化遗产,本文介绍了当前的保护现状,分析了我国畜禽遗传资源的基本情况,阐述了保护畜禽遗传资源的重要性,介绍了当前第三次全国畜禽遗传资源普查工作开展背景,并探讨了保护畜禽遗传资源的办法。 相似文献
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加强畜禽遗传资源保护与利用思路建议 总被引:1,自引:0,他引:1
本文对我国畜禽遗传资源保护已开展工作和取得的成绩进行了全面总结,分析了存在的主要问题,提出了进一步加强畜禽遗传资源保护工作的思路建议. 相似文献
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畜禽遗传资源是指畜禽及其卵子(蛋)、胚胎、精液、基因物质等遗传材料。畜禽遗传资源是重要的生物资源,更是国家重大战略资源,是社会和经济可持续发展的基础,在促进国民经济发展中起到十分重要的作用。我国政府非常重视畜禽遗传资源保护工作, 相似文献
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畜禽遗传资源,指活体家畜家禽品种的种质资源,即畜禽品种资源。国际上已将畜禽遗传资源的占有情况作为衡量一个国家国力的重要指标之一。我国目前部分畜禽遗传资源呈减少趋势,这一问题若不能被遏制,我国畜牧业将遭受不可估量的损失,笔者在此就畜禽遗传资源减少的问题,提出如下对策,供同仁参考。 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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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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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