西藏草原畜牧业大发展探讨

西藏作为我国高寒牧区的中心 ,拥有广袤的草场 ,大量藏系家畜 ,畜牧业作为其支柱产业 ,居重要地位。加强对其畜牧业大发展的研究 ,在西部大开发中 ,显得尤为必要和紧迫 ,对增进国民经济发展具有深远而现实的意义     

发展现代畜牧业动物疫病防控要先行

发展现代畜牧业是转变传统畜牧业发展方式的必然要求,是畜禽及畜禽产品质量安全的保障,是乡村振兴的基础工作.畜牧业作为农牧民增收的支柱产业,其品类多、规模大、链条长,是农牧区基础性、支撑性产业,且与生态环境密切相关,在乡村振兴战略中扮演着极其重要的角色.     

现代畜牧业技术提升的影响因素与对策探究

发展现代畜牧业已经成为当下我国农业发展中的一大重点任务.畜牧技术作为现代畜牧业的核心技术,对其发展来说至关重要.本文以畜牧技术提升为切入点,分析探讨影响现代畜牧业畜牧技术提升的相关因素,切实提出提升畜牧技术水平的相关措施.     

龙里县畜牧业产业化发展方向与措施

农业作为我国的第一产业,为我国的国民经济建设与发展奠定了良好的基础.农业主要有种植业、林业、畜牧业和渔业.这四种主要的形式,其中,畜牧业作为农业产业中的一大支柱,其发展的好坏也关系到我国经济的发展.本文通过对贵州省龙里县的畜牧业进行研究分析,对目前所存在的一些问题进行详细的阐述,并对此提出相应的解决措施,为龙里县的畜牧业发展奠定坚实的基础.     

加大南木林县"十三五"时期畜牧业产业结构调整力度

畜牧业是大农业的重要组成部分,作为一个古老而传统的产业一向为人们所重视.南木林县作为农牧业结合大县和农村人口大县,重视和发展畜牧业是经济和社会发展的必然要求.就结合南木林县畜牧业现状,谈谈个人的意见和观点.     

加快产业化进程促进现代高效畜牧业发展

近年来,中央一号文件多次提出龙头企业要带动农业产业化经营,加快发展现代农业,畜牧业作为大农业的重要组成部分,其产业化经营,同样是发展现代高效畜牧业的重要途径.作者结合工作实际,就畜牧产业化的前提、基础、目标与保障等四个方面做了探讨.     

西部大开发十年云南省畜牧业生产迈上新台阶

西部大开发十年是云南畜牧业生产快速发展的十年.自1999年以来,云南省牢牢抓住西部大开发带来的难得发展机遇,全省认真贯彻执行中央和省委、省政府关于畜牧业发展的各项方针、政策,把畜牧业作为促进农民增收的重要途径和带动农村经济发展的新增长点进行培植,采取有力措施,使云南省畜牧业在西部大开发的十年间实现了持续快速健康发展.经过十年的努力,目前云南畜牧业生产呈现出了生产能力快速提升、产品结构不断优化、规模化发展步伐加快、产业地位明显提升的良好发展局面,畜牧业生产迈上了新台阶.     

浅谈近年来畜牧业发展的特点与原因

近20年来,我国畜牧业得到了迅速发展,养殖业的数量与结构日趋合理,随着规模化养殖在畜牧业中所占比例上升,其发展呈现两大趋势:一是规模趋大,二是分布越来越集中.现以2005年为例,对近年来的畜牧业发展情况进行分析.     

浅谈江苏金坛乡镇畜牧兽医站的现状和发展方向

近年来,本市把加快畜牧业尤其是规模畜牧业的发展作为建设现代农业、增加农民收入的重要举措来抓,全面提升畜牧业发展的动物防疫工作水平,全市畜牧业形成"一带"、"两主"的发展格局,即西部畜牧生产产业带、家禽和生猪两大主导产业.     

如何发展黑龙江省生态畜牧业

生态环境建设作为西部大开发的重要内容之一,已引起黑龙汀省委、省政府的广泛关注.如何抓住历史机遇,增强治理力度,为畜牧业的持续发展奠定一个良好的生态基础.本文阐述了黑龙江省发展生态畜牧业必要性、有利因素和制约因素,最后探讨了发展黑龙江省生态畜牧业主要措施.     

癸氧喹酯干混悬剂含量测定的改进

采用高效液相色谱法测定癸氧喹酯干混悬剂的含量,在2-250μg/mL范围内,峰面积的常用对数与进样量浓度的常用对数呈良好的线性关系,R^2=1(n=5),平均回收率为99.24%~99.51%,RSD在0.05%~0.28%。此方法分析时间短,样品前处理简便、定量结果准确,重现性好,结果满意,为其质量控制提供了依据。     

商会自治的基石——商会自治规范研究

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。     

猪毛色遗传的研究进展

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。     

中华人民共和国农业部公告 第267号

为贯彻落实《兽药生产质量管理规范》(简称《兽药GMP》),进一步推动兽药GMP实施进程,我部制定了《兽药生产质量管理规范检查验收办法》,现予公告。本公告自2003年6月1日起施行。附件:兽药生产质量管理规范检查验收办法二○○三年四月十日第一章 总则 第一条 为推动《兽药生产质量管理规范》(以下简称兽药GMP)的实施,规范兽药GMP检查验收工作,制定本办法。 第二条 农业部负责全国兽药GMP管理和检查验收工作;负责制修订兽药GMP检查验收管理规定;负责兽药GMP检查员队伍建设和监督管理工作,负责国际兽药贸易中GMP互认工作。 …     

鸡败血支原体垂直传播模式及其阻断方法

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。     

Comparison of 2 methods of centesis of the bursa of the biceps brachii tendon of horses

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.     

不同样本商品蜂蜜中硒含量的测定

用硝酸和高氯酸消化蜂蜜,使硒游离出来,在微酸性环境下,硒和2,3-二氨基萘(DAN)生成有较强荧光的物质,用环己烷萃取,在激发波长378nm,荧光波长518nm处测定其荧光强度。蜂蜜中硒含量范围:0.10～0.82μg/g。表明:蜂蜜应视为天然富硒营养品。     

乳酸杆菌益生作用机制的研究进展

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。     

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.