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加强基层畜禽品种改良工作的思考 总被引：1，自引：0，他引：1
畜禽品种改良工作是推动现代畜牧业科学发展的基础。近些年来,在各级党委、政府的坚强领导和上级畜牧兽医主管部门的正确指导下,基层畜禽品种改良工作取得了较好发展,经济效益、社会效益十分明显,为提升城乡居民生活质量、促进现代畜牧业又好又快发展和建设社会主义新农村发挥了重要作用。为更好地发挥基层畜禽品种改良在建设现代畜牧业中的巨... 相似文献
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近几年来,通过加大对畜牧业基础设施建设投入,不断巩固和完善畜禽品种改良、牧草种植、疫病防治、圈舍改造、畜禽养殖投入品监管、畜牧科技推广以及良种良料良舍的应用,促进了宁洱县畜牧产业化的发展,并已成为宁洱县脱贫攻坚,帮助建档立卡贫困户增收致富的重要产业。大力发展畜牧业,对于精准脱贫、振兴农村、促进全县经济社会持续协调发展具有十分重要的作用。笔者针对宁洱县畜牧业发展现状,提出了加快畜牧产业化发展的对策。 相似文献
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卜孟娟 《河南畜牧兽医(综合版)》2020,(5):13-14
随着我国畜牧业的快速发展,乡镇畜牧品种改良工作也取得了一定的成绩,但也存在一些问题和不足,为此,笔者针对目前我国乡镇畜牧品种改良工作存在的问题进行了大体分析,围绕因地制宜发展良种产业、加强政府资金政策扶持、健全畜牧品种改良环境、落实卫生防疫检疫工作四个层面,探讨了关于乡镇畜牧品种改良工作的具体改进建议,以期为畜禽数量与质量的提升以及推动畜牧业可持续发展提供参考. 相似文献
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<正>现阶段,我国畜牧业不断取得新的发展和突破,畜牧产业朝着集约化、标准化、融合化发展方向不断迈进,依托科技,更新发展理念,做好农业供给侧结构性改革仍是我国畜牧业发展的基本方向。但从总体上看,我国畜牧业在把握机遇发展的同时,科技对促进畜牧业发展的贡献率存在明显不足。畜禽良种是科技赋能畜牧业发展的集中体现,畜禽品种改良工作有利于提高畜禽现有品种的生产性能, 相似文献
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对山丹县现代畜牧业高质量发展现状进行了调研,针对品种改良步伐缓慢、畜产品品质不高、畜产品品牌效应不强、畜牧产业组织标准化程度不高等问题进行了分析,提出了充分挖掘地方品种资源优势,培育"山丹肉羊"等畜禽品种;扶持养殖加工龙头企业,促进提档升级,推进质量兴牧;提升企业和产品品牌影响力,实现品牌强牧;推行养殖标准化生产,筑牢畜牧业的安全发展体系等措施。 相似文献
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杨志方 《畜牧兽医科技信息》2019,(1):29-30
畜禽品种的改良,同现代畜牧业的发展息息相关,是构建现代化畜牧业发展体系的基础与保障。现代畜牧业的发展目标是要在实现优质高产的同时,兼顾生态和安全性,而畜禽品种的改良更能适应生产条件和市场发展的需求,是提升畜牧市场整体竞争力的有效措施,因此重视畜禽品种的改良工作对推动现代畜牧业的发展意义非凡。在此背景下,文章先简单介绍了畜禽品种改良对现代畜牧业发展的积极作用,并对如何做好畜禽品种的改良工作提出了建议。 相似文献
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近年来,我市以促进农民增收为首要任务,努力实施项目推动战略,切实转变畜牧产业发展方式,以壮大特色优势畜禽产业为核心,奋力推进现代畜牧业大发展,加快了畜牧大市向畜牧强市转变步伐,畜牧产业发展取得了显著成效。 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