浅谈商品猪疹块型丹毒的检疫

疹块型猪丹毒是由革兰氏阳性菌猪丹毒杆菌引起的猪的传染病,以皮肤疹块为特征性变化.笔者从事生猪屠宰检疫工作多年,现将疹块型猪丹毒的检验要点及类似皮肤病患的鉴别诊断经验介绍如下,仅供大家参考.     

生猪屠宰检疫中对猪丹毒的检验检疫与处理

猪丹毒是由猪丹毒杆菌引起的一种人畜共患传染病,春末夏初直到初冬猪丹毒的发病率都比较高.宰后皮肤表面偶见弥漫性方形伤痕,从形态、颜色都极似初发疹块丹毒,疹块型猪丹毒是皮肤的一种局部感染.采用皮张灯光视检、脂肪肉眼观察、淋巴结与脏器的剖检、实验室细菌学诊断等方法进行检验.     

浅谈商品猪疹块型丹毒的检疫

疹块型猪丹毒是由猪丹毒杆菌引起的猪的传染病 ,以皮肤出现疹块为特征。笔者从事生猪屠宰检疫工作多年 ,现将疹块型猪丹毒的检验要点及与类似皮肤病患的鉴别诊断介绍如下 ,仅供大家参考。1　流行季节 :此病严冬早春季节呈零散发生 ,检出较少 ;春末夏初直到初冬 ,尤其是夏秋季节 ,检出较多。因此 ,检疫人员应充分重视发病季节这一特点。2　病变分布和病变特征 :2 .1　病变分布 :多见于肩、颈、背直至尾部和腹腿的外侧部 ,分布较规律。2 .2　病变特征 :呈扁平略高于皮肤表面 ,大小不等的圆、方、菱形或不规则形 ,以方块和菱形多见 ,周围界限较…     

枯草芽胞杆菌致似疹块型猪丹毒的报告

我们在1986年1、2月的生猪宰后检验中先后发现5例极似疹块型猪丹毒的肉尸,经采样检验为枯草芽胞杆菌所致。一、病理解剖;眼观肉尸臂部、背部,臀部或腹部有为数不等,菱形、圆形或不规则的高出皮肤表面的红色疹块,极似疹块型     

屠宰检验中猪的常见败血型病的鉴别诊断

猪瘟、猪丹毒和猪肺疫是屠宰检验中较为常见的疾病。据深圳市肉品卫生检验所的检验数据统计:1998—2002年间由深圳市肉联厂屠宰经市肉检所检验的3 757 649头生猪中,检出患有上述三种疾病的猪只达2 696头,其中猪瘟933头,猪丹毒1 661头,猪肺疫102头。这三种疫病之中,败血型猪瘟、败血型猪丹毒、败血型猪肺疫尤为多见,但由于它们都具有败血症状,因此在宰后的病理剖检有相似之处,在现场检验时较易混淆,难以     

疹块型猪丹毒检验技术的探讨

为了正确掌握检验技术,今将我们对不同病程的疹块型猪丹毒病理特征与类似皮肤疾患的鉴别诊断经验介绍如下。疹块型猪丹毒检验技术要求一、重视流行季节的特点:猪丹毒检出率与季节的关系颇为密切,严冬早春季节呈零星散发,检出较少,仅占0.059～0.064％;春末夏初直到初冬,检出率达0.35～0.67％。     

败血型猪丹毒的实验诊断

<正> 猪瘟、猪丹毒、猪肺疫是宰后肉品检验中常见的三大传染病。据统计:1979年南京肉联厂在宰后检验的病猪中,猪丹毒占14.6%,猪瘟占3.1%,猪肺疫占2.1%,可见以猪丹毒的检出率最高。猪丹毒在临床特征上有急性型(败血型)、亚急性型(疹块型)和慢     

猪瘟、猪丹毒和猪肺疫在屠宰检疫中的病变区别及处理要点探究

为了解屠宰场猪病防控的总体情况,清楚辨析屠宰检疫中猪病的异同,特选取猪场临床上容易混淆的猪瘟、猪丹毒、猪肺疫等疫病,本文综述了3种动物疫病的概况,通过宰前检疫、宰后检验和鉴别诊断对这猪病从临床症状和病理变化等进行对比,概述了病原、细菌属性、运动状态、呼吸、粪便、皮肤、发病率、病死率、流行特点等12项鉴别要点.通过近几年...     

宰后检验中对猪丹毒病的一些探索

猪丹毒是宰后肉品检验中主要的传染病之一,了解与探索该病在宰后检验的一些特性, 将对正确诊断起着有益作用。1988—1989年笔者在肉品卫生检验中经肉眼诊断为猪丹毒后,     

浅谈猪宰后皮肤的病理变化

通过对宰后猪皮肤的检验,可鉴别诊断一些传染病、皮肤病或是机械、物理损伤,以决定恰当的处理方法,这可作为兽医卫生检验人员诊断疾病对肉品卫生评价及卫生处理的依据。宰后检验皮肤的病理变化主要有以下几种:1 特异性的病理变化1.1 猪瘟、全身皮肤特别是颈部、腹部、股内侧、四肢等处皮肤有暗红或紫红色的小出血点或融合成出血斑,指压不褪色,尤其是眼结膜或阴户粘膜上的出血点,在其它疾病上是少见的。1.2 猪丹毒、充血性红斑,指压褪色,皮肤上出现大小不等的方形、圆形或菱形疹块,往往高出于皮肤的表面呈白色、灰色或红色;败血型者,肉尸大片…     

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。     

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.