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为了加强草原保护建设和合理利用,改善生态环境,维护生物多样性,发展现代畜牧业,促进经济和社会的可持续发展,中央和地方采取了一系列有效措施,草原保护力度加大,建设速度加快,草原畜牧业生产方式转变加速. 相似文献
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农业部畜牧业司草原处 《中国牧业通讯》2007,(13):34-35
《全国草原保护建设利用总体规划》是农业部针对近年来草原建设和保护的薄弱环节．为实现我国草原资源合理永续利用．改善生态环境，维护国家安全，促进草原畜牧业发展而编制的．指导今后我国草原保护建设工作的总体规划．对我国草原保护建设具有重大意义。为使地方各级政府、广大草原从业者了解《全国草原保护建设利用总体规划》，本刊特约请农业部畜牧业司有关人员予以解读。[编者按] 相似文献
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草原执法是保护、建设和合理利用草原,改善生态环境,维护生物多样性,促进经济和社会可持续发展的基本保证。民和县自2009年开展草原执法工作以来,发现存在草原权属不清,部门间职能冲突,收费保准太低等许多问题。为此笔者就民和县草原执法工作中存在的问题提出一些粗浅的意见建议。 相似文献
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贯彻落实《草原法》依法强化草原管理 总被引：3，自引：2，他引：1
我国于 1 985年颁布了《中华人民共和国草原法》。这部法律的实施 ,对加强草原的保护、建设和合理利用 ,维护和改善生态环境 ,发挥了积极的作用。但是 ,随着我国社会经济和生态环境的变化 ,原《草原法》已经不能适应和满足当前草原保护、建设和管理的需要。新《草原法》的颁布和实施 ,更能适应当前草原保护、建设和利用的需要 ,对改善草原生态环境 ,提高广大农牧民生活水平 ,促进牧区社会进步、经济发展和政治稳定具有重要意义。因此 ,我们在实际工作中要认真贯彻执行。1认真做好《草原法》的学习和宣传工作 贯彻落实《草原法》 ,一是各有… 相似文献
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《湖北畜牧兽医》2003,(3):3-7,10
(198 5年 6月 18日第六届全国人民代表大会常务委员会第十一次会议通过 ;2 0 0 2年 12月 2 8日第九届全国人民代表大会常务委员会第三十一次会议修订 )第一章 总 则第一条 为了保护、建设和合理利用草原 ,改善生态环境 ,维护生物多样性 ,发展现代畜牧业 ,促进经济和社会的可持续发展 ,制定本法。第二条 在中华人民共和国领域内从事草原规划、保护、建设、利用和管理活动 ,适用本法。本法所称草原 ,是指天然草原和人工草地。第三条 国家对草原实行科学规划、全面保护、重点建设、合理利用的方针 ,促进草原的可持续利用和生态、经济… 相似文献
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草原保护建设不仅直接关系到草原可持续发展和牧区社会全面进步,也直接关系到国家生态安全和我国经济社会全面协调发展.为加快草原保护建设,长期以来,我们进行了不懈的努力和积极的探索,使局部地区草原生态环境明显改善,草原畜牧业也稳步发展. 相似文献
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新修订的《中华人民共和国草原法》(以下简称《草原法》)，由中华人民共和国第九届全国人民代表大会常务委员会第三十一次会议于2002年12月28日修订通过，已从2003年3月1日起正式施行，这既是保护、建设和合理利用草原，改善生态环境，维护生物多样性，发展现代畜牧业，促进经济和社会的可持续发展的一部根本大法，也是我国法制建设的一个重要组成部分，体现了党和政府对草原保护、建设、 相似文献
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草原生态环境直接关系到国民经济与社会发展的生态安全和资源安全。草原的合理利用，实现草、畜动态平衡、维护资源的延续，实现草业的可持续发展对促进经济发展，推动社会进步，加强民族团结，保持边疆稳定都具有十分重要而深远的意义。本文紧紧围绕着保护、建设和合理利用草原，改善草原生态环境，促进畜牧业的持续稳定发展等方面论述了保护和建设草原生态的意义、作用以及措施和对策。 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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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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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
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乳酸杆菌作为益生菌广泛用于人和动物.本文综述了乳酸杆菌改善宿主健康的机制.乳酸杆菌可通过产生抗菌物质如乳酸、过氧化氢、细菌素,或者通过竞争营养或肠道黏附位点来抑制致病菌;通过诱导黏附素的分泌或阻止细胞凋亡而增强肠道的屏障功能,从而保护肠道.文章重点讨论了乳酸杆菌表面成分(表面蛋白、脂磷壁酸和肽聚糖)与肠道受体(C型凝集素受体、Toll样受体和Nod样受体),阐述了他们结合后启动免疫调节信号,调控肠道免疫功能以发挥改善健康作用的机制. 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