肉猪爆发肉毒梭菌中毒症

我区四都乡马乌村某养猪专业户,家中饲养大小猪75头,其中母猪10头,肉猪29头,仔猪46头。因给肉猪饲喂变质的“散黄蛋”,致使29头肉猪全部发病死亡,经综合分析,诊断为猪肉毒梭菌中毒症,现报告如下: 一.发病经过和症状:1988年5月14日,     

猪苦楝子中毒诊断报告

汝南县外贸种猪场是河南省最大的瘦肉型种猪场之一.近两年来在两栋猪舍内先后几次发生以中毒症状为特征的疾病.今年四月.在一栋猪舍内有四头猪再次发病,诊断为苦楝子中毒,遂采取相应的措施,半年来再无类似的疾病发生.现将有关情况报告如下.     

葡萄球菌引起仔猪渗出性皮炎的诊治

1 发病情况 2002年9月，齐市昂昂溪区一养猪户，自繁自育14窝仔猪120头。12日龄时开始出现面部红肿、结痂现象，发病仔猪精神沉郁，食欲不振。发病仔猪6窝，死亡7头。经我站化验室检验，诊断为仔猪葡萄球菌感染。     

猪霉变麦芽根中毒诊疗报告

1988年2月,临海市桐峙区有49头猪发病。根据病史及症状、病变等诊断为霉变麦芽根中毒。现报告如下。一、发病概况:49头病猪中,有40头肉猪,8头母猪和1头仔猪。范围涉及到2个乡20个村的37个养猪户。母猪和肉猪均因购自同一货主、同一批次的青黑色,具有“青草味”的麦芽根饲喂9—15天后,发病。仔猪因常到母猪槽中采食而同时发病。当地兽医用解热镇痛抗风湿和抗菌消炎疗法,未见好     

断奶仔猪硒中毒病例报告

1988年11月,首山养猪户王文超所养断奶仔猪超量使用微量元素添加剂,造成中毒,经济损失惨重,现予报道,希望引起养猪户重视,添加剂不可滥用。 1.发病情况该猪场是新建清净猪场,引进断奶仔猪54头,进场后做了免疫接种,11月20日即引进40天后发病,全群减食,其中4头出现间歇性神经症状,至11月30日死亡8头,占发病猪的15％。1989年1月上旬,由于混合感染又陆续死亡18头,共死亡26头,占饲养量的48％,造成了严重的经济损失。耐过的28头中18头发育停滞,只有10头发育稍好些。     

一例猪瘟诊疗报告

2002年11月,某猪场4月龄左右的育肥猪部分出现腹泻、消瘦、后躯无力等症状。发病急,传染快,发病率高,死亡率高。10天左右有100多头猪发病,死亡10余头,经猪瘟疫苗紧急免疫接种后病情得到了控制。现报告如下。1　流行病学调查该猪场存栏数约2000头,其中种母猪250头,肉猪1500头。以前一直未发生过猪瘟。所有母猪每年6-7月份和年前都进行一次猪瘟免疫,每次剂量为1.5头份;小猪20日龄时以1头份首免,40日龄时以1.5头份二免。一个月前引进一批后备母猪。由于没有专用隔离舍,该批后备母猪与肉猪同舍饲养。11月中旬肉猪舍中一栏4月龄左右的3头育肥…     

马铃薯叶急性中毒的诊治

台州市黄岩区院桥镇一养猪户饲养10头肉猪,体重70～80kg左右,2008年4月28日早晨发现一头死亡。其中4头呼吸困难。其它猪只食欲不振,通过病理剖检和临床诊断,确认为急性马铃薯叶中毒。报告如下:     

马羚薯叶急性中毒的诊洽

台州市黄岩区院桥镇一养猪户饲养10头肉猪,体重70～80kg左右,2008年4月28日早晨发现一头死亡.其中4头呼吸困难.其它猪只食欲不振,通过病理剖检和临床诊断,确认为急性马铃薯叶中毒.报告如下:     

猪附红细胞体病的诊治

附红细胞体病是由附红细胞体引起的一种人畜共患的传染病,2010年9月,辽宁省葫芦岛市某养猪户发生了以高热、贫血、黄疸为特征的疾病,经现场临床症状观察、病理剖检和实验室诊断确诊为附红细胞体病。现将诊治情况介绍如下。1发病情况辽宁省葫芦岛市某养猪户饲养仔猪70头。2011年9月中旬个别仔猪突然发病,第2～3d开始发病数目增至12头,3头仔猪死亡,发病率为17.1%,病死率为25%。     

母猪热应激引起仔猪低血糖病的案例分析及解决措施

2011年6月20日,一存栏24头生产母猪的养猪户告知笔者,近半个月来,已有3头母猪产子后其新生仔猪先后出现后肢无力,爬伏不起,皮肤苍白、腹泻等现象,其中一胎11头先后全部死亡,一胎还剩3头,另一胎仔猪也开始发病,畜主不知所措。笔者下午到现场后发现,养猪户有两栋猪舍,     

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。     

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。     

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。     

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.