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加快养殖小区建设 推进畜牧业生产方式转变——海东地区养殖小区建设情况调查报告 总被引：1，自引：0，他引：1
畜禽养殖小区是一种新型的畜牧业生产组织形式,是传统畜牧业向现代畜牧业发展的革命性的转变,是在适合畜禽养殖的地域内,按照集约化养殖要求,统一建设有一定养殖规模的较为规范、管理严格的畜禽饲养场所;小区远离村庄（或居民生活区）,专门从事某一种特定畜禽养殖,区内饲养和防疫设施完备,粪污处理配套,技术规程统一,管理措施一致, 相似文献
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随着社会的发展,扶沟县畜禽养殖向规模化、集约化发展,生产效率和经济效益都有大幅度的提高,畜禽养殖已经成为该县农民的主要收入来源。但是畜禽养殖带来的环境污染问题越来越严重,给人们的生活带来了危害。畜禽养殖污染问题成为畜牧生产急需解决的大问题。 相似文献
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中国猪场粪污处理的现状与发展趋势 总被引：1，自引：0，他引：1
国务院总理李克强10月8日主持召开国务院常务,审议通过《畜禽规模养殖污染防治条例（草案）》。条例指出,随着我国畜禽养殖量不断扩大,养殖污染已成为农业农村环境污染的主要来源。随着我国标准化、集约化养猪的迅速发展,生猪生产已成为一个庞大的产业。据统计,全国规模化猪场约6.5-7万个,每年产生的猪粪总量约2亿t,猪尿污水总量达21亿t。本文详细介绍了全国猪场粪污产量,盘点各种粪污固液处理方法。 相似文献
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随着畜禽规模养殖的发展,高度集约化养殖模式将影响畜禽的健康状况、疫病防控和福利水平。一种无接触、无应激的射频识别（Radio Frequency Identifi cation,RFID）技术应运而生,该技术可以在无损状态下采集畜禽的行为、生理生化和养殖环境指标,从而为评估集约化养殖的效果和影响提供基础数据。文章讨论了三种常见类型的RFID系统在畜禽养殖中的应用,系统地比较了各类系统的优缺点及适宜应用场景,进一步提出RFID在畜禽养殖中的未来应用方向,以期为深化畜禽信息采集的研究提供参考。 相似文献
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韶关市番灵饲料有限公司（以下简称：“番灵”）正式成立于2003年，是韶关地区第一家饲料生产及畜禽水产养殖集约化规模发展的现代化企业公司首期工程投资100万元， 相似文献
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为了防治畜禽养殖污染，推进畜禽养殖废弃物的综合利用。保护和改善环境，保障人体健康，促进畜牧业持续健康发展，环境保护部、农业部在认真总结畜禽养殖污染防治工作实践经验和广泛听取意见的基础上，起草了《畜禽养殖污染防治条例》（送审稿），报请国务院审批。 相似文献
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一 现阶段农村畜禽的规模化生产状况
现阶段的畜禽养殖，主要存在着三种养殖方式：一是农村小规模散养。这一养殖方式随着农村社会生产力水平的不断提高，正逐步被专业化、集约化、商品化生产所取代。在平原地区，目前有35％的农户已不再饲养畜禽，随着各地新农村建设的推进，农村传统的饲养方式将会加速淘汰。二是适度规模的专业户饲养。这一养殖模式是当前我国商品化畜禽养殖的主体，也是新农村建设中需要整改的重点。 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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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
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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