2005年鸵鸟业发展市场趋势

据悉，目前国际市场鸵鸟产品的需求呈供不应求态势。1只75公斤左右的鸵鸟，其皮可制6—7双皮鞋，最高价值可达7000美元(即人民币5．6万元)。现在世界上最大的鸵鸟生产国南非的鸵鸟存栏量一般稳定在30万只-40万只，仍然满足不了国际市场对鸵鸟产品的需求。     

国内特种养殖项目专家评

鸵鸟：目前我国已有400多家养殖企业，存栏各龄鸵鸟20万只，成为亚洲最大的鸵鸟养殖国。但我国尚未有鸵鸟皮毛加工能力，市场销路不畅，鸵鸟价格较低。孔雀：全国存栏数超过10万只，广东、福建、北京、上海发展较快，还未走向商品化生产，现今市场价每公斤120～150元。但仅限于宾馆饭店，不能成为大众食品。同时，一些地方种价仍然较高。大雁：俗名野鹅，体重5～10公斤，主食野草，现已驯化养殖成功和推广饲养。目前一只雏雁价格280元，如能适当降低价格，市场前景将看好。贵妇鸡：贵妇鸡肉质洁白鲜美，既有土鸡的香滑，又有山鸡肉的结实，…     

给鸵鸟养殖业泼点冷水

近两年，我国各地一些养殖户从国外引进鸵鸟约 20万至 30万只，由于一些商贩的“炒作”，哄抬价格，使 1只鸵鸟的价格由 1万元“炒”至 10多万元，致使一些人认为有利可图，纷纷办起了鸵鸟养殖场。鸵鸟养殖热引起了中国农科院特产研究所等有关专家的关注，他们经过周密的市场调查和详尽的科学论证，认为：鸵鸟养殖业不符合中国国情，主要原因是养殖成本太高，产品国内无销路，国外无订货，鸵鸟养殖热应该冷下来，再度降温。 　　但专家的告诫并未使一些养殖户冷下来。去年至今国内仍有一些地方，如河南、河北、山东、辽宁、黑龙江、吉林等省…     

再给鸵鸟养殖热降温

近两年，我国各地一些养殖户从国外引进鸵鸟约２０万－３０万只，由于一些商贩的“炒作”，哄抬价格，使１只鸵鸟的价格由１万元“炒”至１０多万元，致使一些人认为有利可图，纷纷办起了鸵鸟养殖场，炒得沸沸扬扬。“鸵鸟养殖热”引起了中国农科院特产研究所等有关专家的关注，他们经过周密的市场调查和详尽的科学论证，认为：鸵鸟养殖了符合中国国情，主要原因是养殖成本太高，产品国内无销路，国外无订货，“鸵鸟养殖热”应该冷下来．再度降温。 但专家的告诫并未使一些养殖户冷下来，去年至今国内仍有一些地方．如河南、河北、山东、辽…     

鸵鸟养殖须谨慎

从中国农科院特产研究所获悉:目前全国已有20多个省市从非洲引进鸵鸟约20多万只,办起了鸵鸟养殖场;还有一些地方的养殖场和个体户正打算养殖鸵鸟,加之各种媒体纷纷“炒作”,兴起了“鸵鸟养     

再谈我国鸵鸟养殖发展的思路

虽然南非养殖鸵鸟已有150余年的历史，但作为养殖业的兴起与发展只是近20余年的事，目前至少已有50多个国家和地区在发展鸵鸟养殖业．饲养量超过250万只，年屠宰60—75万只。其中南非存栏鸟约150万只，有专业屠宰场8家，年屠宰鸟约40万只，为世界提供一半以上的鸵鸟产品，并向世界出口育成的非洲黑种鸟和技术、设备；纳米比亚有存栏鸟6万—10万只，饲养万只以上的     

津巴布韦出口鸵鸟肉

津巴布韦出口鸵鸟肉据津巴布韦鸵鸟饲养业协会透露，津巴布韦将从今年开始，不仅出口活鸵鸟，而且出口鸵鸟肉和皮。据市场调查，津巴布韦鸵鸟饲养业是从１９９１年发展起来的，目前全国鸵鸟群已扩展到约１２万只。饲养鸵鸟的农民已联合兴建一家屠宰场，生产能力达到年屠宰...     

韩将允许食用鸵鸟肉

据新华社报道韩国将在２个月内制定并实施有关允许食用鸵鸟肉的规定。韩国有关部门说,随着这一规定的实施,要防止国内饲养和繁殖出现过热,同时要注意国外鸵鸟肉大量涌入。韩国农林部和鸵鸟协会的统计说,韩国进口的鸵鸟（包括鸵鸟蛋）１９９７年为６８５只,１９９８年增加到４２４８只,去年大幅度增加到１．２２万只。而韩国目前有８００多农户在饲养着２万多只鸵鸟。目前在韩国国内市场上,一只３个月大的鸵鸟价格为７０万韩元（１１００韩元合１美元）,３年以上的鸵鸟价格为６００万～１５００万韩元。鸵鸟肉的价格每公斤为３万韩元,与日本…     

一种巨型高贵的特种禽─—鸵鸟

一种巨型高贵的特种禽─—鸵鸟韩刚，陈锦农（华南农业大学）在自然界中最大的鸟类为鸵鸟，它最早被驯化于非洲。澳大利亚鸵鸟，在世界上也享有名望。据报道，南非饲养鸵鸟已有８０多年的历史，目前饲养鸵鸟数高达２０多万只。津巴布韦和中美洲等国家，不仅建有上千只规模...     

我国鸵鸟养殖产业的现状、发展前景与思考

摘要：近20年来，世界鸵鸟养殖产业发展甚快，非洲的南非、纳米比亚、津巴布韦等国已成为鸵鸟产品的主要出口国家，既出口种鸟，更多的出口鸵鸟肉和皮。目前世界上已有42个国家和地区饲养驯养鸵鸟，约有200万-250万只，年屠宰60万-75万只。消费市场主要在欧洲国家和美、加、日、韩及台港地区，由于受疯牛病、口蹄疫的侵袭，牛、羊、猪肉受到影响，导致了鸵鸟肉要求量成倍增长，价格持续上扬。     

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.