我县养殖环节中三种“瘦肉精”的监测调查

2011—2012年,对我县养殖环节中220头份肉牛尿样、460份肉羊尿样及650头份育肥猪尿样,进行了对莱克多巴胺、盐酸克伦特罗、沙丁胺醇三种物质的监测调查.经检测,被检尿样中“三种”物质的阳性率均为0,说明在我县的养殖环节中暂未使用或储藏“瘦肉精”类物质的现象,但是为了提早做好对“瘦肉精”的监管工作,从源头上消除因动物产品所引发的各类“瘦肉精”事件,还需从各方面、各环节做好监管工作.     

天祝县养殖环节“瘦肉精”的监测调查

2015年从天祝县的养殖场(小区)、规模养殖户和散养户中随机抽取148头肉牛、336只肉羊和172头育肥猪的尿样进行"瘦肉精"类物质盐酸克伦特罗、莱克多巴胺和沙丁胺醇的监测调查。用"瘦肉精"速测卡检测,被检尿样中盐酸克伦特罗、莱克多巴胺、沙丁胺醇结果均为阴性,阳性率为0,说明在天祝县的养殖环节中暂未使用"瘦肉精"类物质的现象,但为了从源头上控制畜产品质量安全,还需从多方面着手抓好"瘦肉精"检测监管工作。     

加强监管确保无公害生猪生产

浏阳市畜牧水产局突出饲料和畜产品安全生产工作重点,在畜禽水产品和饲料质量安全监管、无公害生猪生产及开展严厉打击制售使用“瘦肉精”等禁用药品的整治行动中,打防结合、标本兼治,注重实效,确保无公害生猪生产。2004年11月,农业部在浏阳市拉网式抽检600个生猪尿样,其“瘦肉精”检出率为零。具体做法是：     

浅谈“瘦肉精”检测样品采集中的注意事项

随着养殖业的发展，畜产品质量安全越来越得到政府和消费者的重视，实验室检测在“瘦肉精”检测中起到了不可取代的重要作用。实验室监测结果的准确性、有效性除受试验方法、试验设备、检测试剂、试验操作等因素影响外，还受到“瘦肉精”检测尿样（以下简称尿样）的采集、运输、保存等因素的影响。尿样的采集、运输、保存是监测工作顺利开展的前提，决定了试验结果的可靠性，检验结果能否反映出饲添“瘦肉精”，一定程度上依赖于样品的代表性和质量。笔者通过从事畜产品安全检测工作的做法和体会，浅谈在大牲畜饲养期间对尿样的采集、运送、保存应注意的问题。     

瘦肉精监测中尿样的采集方法和注意事项

随着对畜产品安全工作的日益重视,瘦肉精监测任务越来越重,尿样采集数量越来越大.本人从事畜产品安全监管监测工作多年,积累了丰富的尿样采集经验,现就尿样的采集方法和注意事项做一简要阐述,供大家参考.     

惠安县控制生猪瘦肉精残留的经验

惠安县高度重视瘦肉精残留的检测控制工作,为保障居民的肉食品安全,2001年开始将其作为一项民心工程来抓,坚持每月在全县各乡镇牲畜定点屠宰场、生猪专业户开展2批次36头以上生猪尿样的不定期瘦肉精残留抽检工作。     

惠安县控制生猪瘦肉精残留的经验

惠安县高度重视瘦肉精残留的检测控制工作,为保障居民的肉食品安全,2001年开始将其作为一项民心工程来抓,坚持每月在全县各乡镇牲畜定点屠宰场、生猪专业户开展2批次36头以上生猪尿样的不定期瘦肉精残留抽检工作.     

农业部公布被检出"瘦肉精"企业名单

为了严厉打击在生猪饲养过程中使用盐酸克伦特罗(瘦肉精)的违法行为,保证畜产品安全,农业部在加强对盐酸克伦特罗使用环节监管和打击的基础上,增加了对生猪生产中尿样的抽查频率。按照计划,2001年第四季度在河北、浙江、安徽、河南、湖南、江西、广     

抓好生猪尿样采集确保"瘦肉精"正确检测

采集生猪尿样是“瘦肉精”(盐酸克伦特罗)检测过程中重要的环节。巴城镇畜牧兽医站在镇政府的支持下,在昆山市畜牧兽医站的指导下,认真抓好生猪尿样采集工作,现将情况简述如下:1瘦肉精检测中尿样采集情况巴城镇共有居民23000多人,镇内除了常住人口和外资企业、民营企业人口之外,在旅游季节还迎来成千上万的旅游者,到巴城阳澄湖畔风景区观光度假,所以猪肉是菜肴中不可缺少的食品,况且每日需求量比较大。然而每日供应的猪肉绝大部分由外地运来的生猪,均在巴城镇食品站定点屠宰场宰杀后销售。为了确保全镇居民和旅游者吃上“放心肉”,从2005年1…     

浅谈北京市生猪定点屠宰场“瘦肉精”控制

2009年2月19日,广州市出现＂瘦肉精＂中毒事件,截止21日,已累计发病70人;2009年3月15日,广州白云区嘉禾畜禽交易市场130头来自外省的生猪,部分检出＂瘦肉精＂;2009年4月,岫岩满族自治县动物卫生监督管理局开展瘦肉精专项整顿时,对一牛场的尿样检测中,有2头牛的尿样经检测为阳性,     

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。     

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。     

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。     

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.     

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。