共查询到20条相似文献，搜索用时 62 毫秒
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大通县青山乡退耕还草工作调查 总被引：2，自引：0，他引：2
鲍义兰 《青海畜牧兽医杂志》2002,32(1):23-23
退耕还林 (草 )是国家实施西部大开发战略的一项重要措施 ,也是实施西部大开发战略的根本和切入点。实施退耕还林(草 )的直接目的就是通过种草种树 ,保持水土流失 ,逐步实现改善生态环境 ,促进农业效益提高和增加农牧民收入。实施退耕还林 (草 )工程 ,种养技术是关键 ,典型示范是非常重要的环节 ,在科技示范项目的选择上 ,能够进行产业化开发、经济效益显著、主要技术成熟可靠、适宜于在项目区示范、推广 ,同时兼顾技术成果的综合配套能力。笔者对大通县青山乡退耕还草工作进行重点调查 ,希望通过不断总结经验、加强分类指导 ,为今后几年大… 相似文献
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2002年,朱基总理在国务院西部开发领导小组第三次会议上明确提出:在加快退耕还林步伐的同时,要把草原保护提到议事日程上来。要尽快启动“退牧还草”工程,通过休牧育草、划区轮牧、封山禁牧、舍饲圈养等措施,把草原建成我国北方一道天然屏障。12月16日,国务院正式批准在西部11个省区实施退牧还草工程。作为享誉世界的草原畜牧业大区,内蒙古又被列为“退牧还草”重点地区。2003年3月14日,内蒙古自治区政府召开了全区退牧还草工程启动会议,全面部署了退牧还草工作。 相似文献
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关于宁夏地区退耕还草恢复生态环境的科技切入点 总被引：3，自引：1，他引：2
退耕还林还草，恢复生态环境，是实施农业和农村经济结构战略性调整，加快西部大开发进程的主要内容之一，抓住西部大开发这一难题机遇，领先科技进步，把退耕还林还草这一恢复生态环境的基本措施抓紧抓好，落到实处。本文就宁夏退耕还草恢复生态环境的科技主要切入点谈谈想法。 相似文献
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虎银 《养殖与饲料．饲料世界》2011,(1)
近几年,随着西部大开发、退耕还林还牧(草)工程的实施,彭阳县县委、县政府把草畜产业的发展摆上了重要议事日程,按照"提质、增效、扩量"的培育方式和提升增加农民收入的有效途径,并结合党员发展双带资金及小额贷款的扶持发放,使全县规模养鸡场(户)不断发展壮大,鸡的饲养量不断增大,随之也导致了各种类型鸡腹泻的发生率较高.通过多年的基层调研,笔者发现此病会使鸡食欲减退,营养不良,生长受阻或停滞. 相似文献
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朱发录 《青海畜牧兽医杂志》2000,30(3)
20 0 0年是我省实施西部大开发战略的第一年。加强依法治草是退耕还林 (草 )等生态工程建设的关键。为了更好地贯彻执行草原法律、法规和有关规定 ,提高草原监理人员执法水平 ,规范草原执法行为 ,使草原监理部门在退耕还林 (草 )工作中发挥更大的作用 ,青海省草原监理站于 2 0 0 0年 4月 2 3日～ 3 0日在平安县平安镇举办了全省第四届草原法制管理培训班 ,部分州 (地 )、县 (市 )畜 (农 )牧局局长、草原监理站站长及从事草原监理工作的业务人员等 90多人参加了培训班的学习。培训班上聘请省政府法制局、省高级人民法院、省物价局、省草原监… 相似文献
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规模化畜禽养殖场的疫病控制 总被引：1，自引：0，他引：1
近年来,随着西部大开发战略的实施,各地区把大力发展畜牧业作为农民增收的重要途径。实施退耕还林还草、封育禁牧、舍饲圈养、为养而种、项目促牧等措施,引导农民发展规模化生产,使畜禽养殖业的生产方式发生了根本性的变化,由传统的一家一户分散饲养向专业化、企业化、商品 相似文献
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蚕桑作为传统特色产业,为我市南部山区农民增收、农业增效、加快区域经济发展做出了巨大贡献。近年来,随着国家西部大开发,退耕还林(草)工程建设,以及商务部“东桑西移”工程的实施,各地抢抓机遇,大力发展生态桑园,蚕桑业发展呈现出了可喜局面。为了尽快把愉林建成陕西乃至全国 相似文献
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1 模式提出的背景为实施西部大开发战略 ,青海省委、省政府提出退耕还林还草 35 .80万hm2 ,年平均为 3.5 8万hm2 ,并要求退耕还林还草要与养畜结合起来 ,采取现代化养畜手段 ,按市场经济规律进行开发。这一重大举措为持续发展畜牧业提供了一次千载难逢的机遇。同时 ,加快建立高产人工饲草基地 ,是促进青海省畜牧业科技进步 ,改善草地生态环境 ,增加农牧民收入 ,提高经济发展水平的重大战略措施之一。2 建立高产人工饲草基地的必要性2 .1 草场退化、产量低、载畜量少天然草场面积大 ,但产草量低 ,每公顷产青草不足2 10 0kg ,需要 0 .70hm2… 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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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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Billinghurst RC Brama PA van Weeren PR Knowlton MS McIlwraith CW 《American journal of veterinary research》2004,65(2):143-150
OBJECTIVE: To determine whether serum concentrations of biomarkers of skeletal metabolism can, in conjunction with radiographic evaluation, indicate severity of osteochondrosis in developing horses. ANIMALS: 43 Dutch Warmblood foals with varying severity of osteochondrosis. PROCEDURE: 24 foals were monitored for 5 months and 19 foals were monitored for 11 months. Monthly radiographs of femoropatellar-femorotibial and tibio-tarsal joints were graded for osteochondral abnormalities. Serial blood samples were assayed for 8 cartilage and bone biomarkers. At the end of the monitoring period, foals were examined for macroscopic osteochondrosis lesions. RESULTS: Temporal relationships were evident between certain serum biomarkers and osteochondrosis severity in foals during their first year. Biomarkers of collagen degradation (collagenase-generated neoepitopes of type-II collagen fragments, type-I and -II collagen fragments [COL2-3/4C(short)], and cross-linked telopeptide fragments of type-I collagen) and bone mineralization (osteocalcin) were positive indicators of osteochondrosis severity at 5 months of age. In foals with lesions at 11 months of age, osteochondrosis severity correlated negatively with COL2-3/4C(short) and osteocalcin and positively with C-propeptide of type-II procollagen (CPII), a collagen synthesis marker. Radiographic grading of osteochondrosis lesions significantly correlated with macroscopic osteochondrosis severity score at both ages and was strongest when combined with osteocalcin at 5 months and CPII at 11 months. CONCLUSIONS AND CLINICAL RELEVANCE: The ability of serum biomarkers to indicate osteochondrosis severity appears to depend on stage of disease and is strengthened with radiography. In older foals with more permanent lesions, osteochondrosis severity is significantly related to biomarker concentrations of decreased bone formation and increased cartilage synthesis. 相似文献