幼犬肠套叠的诊治

1发病原因由于犬的空肠和回肠交接处界限明显,且空肠管腔比回肠管腔粗大,发生套叠时常常是回肠进入空肠。因而此部位是犬肠叠的常发部位。     

幼犬肠套叠诊治

1 发病原因 由于犬的空肠和回肠交接处界限明显,且空肠管腔比回肠管腔粗大,发生套叠时常常是回肠进入空肠.因而此部位是犬肠叠的常发部位.     

犬肠套叠的影像诊断与手术治疗

肠套叠是指一段肠管及其肠系膜一起套入到邻近一段肠管内,由此诱发肠道中的内容物通过障碍的现象。犬肠道的任何部位都可发生套叠,但以空肠和回肠常见,套叠部分的肠段常因血液循环障碍而     

采用外翻肠囊法研究嘌呤在梅花鹿小肠中的代谢

活体取梅花鹿的十二指肠、空肠、回肠肠段,采用外翻肠囊法对各肠段进行离体培养,研究梅花鹿小肠对嘌呤的吸收和代谢。结果表明:嘌呤在小肠内可被氧化成次黄嘌呤、黄嘌呤、尿酸以及尿囊素,其中次黄嘌呤比例最高;空肠后段和回肠是小肠吸收嘌呤的主要部位;嘌呤衍生物排出途径以肠道排出为主。     

犬腹泻继发肠套叠病例的诊治

肠套叠是指一段肠管及其附着的肠系膜部分套入或嵌入到邻近的一段肠腔内,形成双层肠壁重叠,形似香肠样的肠变位。幼龄犬发病较为普遍,最常发生肠套叠的部位是一段空肠套入到另一段空肠,空肠套入回肠,盲肠套入结肠,并且肠套叠常继发直肠脱。笔者在日常门诊活动中遇到一例肠套叠病例,由于诊治不及时致使造成肠管套叠部分严重坏死,手术切除后治愈,现将诊治过程叙述如下。     

犬肠套叠的诊断与治疗

<正>肠套叠是一段肠管套入与其相连接的另一段肠腔之中。相互套入的肠段发生循环障碍及渗出等过程,致使肠腔狭窄,严重者肠腔闭塞,肠管粘连。肠套叠通常发生空肠套入回肠,回肠套入结肠,盲肠套入结肠,十二指肠套入胃内。最近我院连续收治犬肠套     

犬胃肠不同密度异物梗阻的X射线诊断与手术治疗

<正>犬胃肠异物梗阻为犬的一种急腹症,发病部位主要在幽门或十二指肠、空肠、回肠的某一处。胃肠异物梗阻导致胃肠腔机械性不通,梗阻的肠管局部血液循环障碍,致使宠物剧烈腹痛、呕吐或休克。犬胃肠异物梗阻发生急剧,病程短,如不及时做出正确的诊断,不及时手术治疗,易导致患犬死亡。笔者近几年在临床中遇到数十例胃肠梗阻病例,现对两例典型病例进行报道。1发病原因胃肠异物梗阻主要是由于患犬吞食或误食骨头、     

犬肠套叠的诊治

我们对 48例犬肠套叠进行诊疗 ,取得了满意疗效。1　病情介绍病犬多为幼犬 ,年龄一般在 1.5～ 4月龄 ,患有肠套叠的48例犬中均继发于胃肠炎 ,特别是出血性肠炎较多。犬肠套叠发生的部位多为空肠 ,48例中有 40例发生于空肠 ,其余为回肠、回盲部、直肠。套叠部长度多数为 5～ 15ｃｍ ,最长达2 0ｃｍ。 48例犬肠套叠手术整复 45例 ,2例因套叠时间较长 ,肠管发生严重淤血、坏死 ,呈黑紫色 ,行肠吻合术。 1例因治疗较晚 ,心脏衰竭于手术过程中死亡。2　诊断病犬表现顽固性呕吐 ,严重腹泻、血便 ,腹痛症状较轻。腹部触诊可见腹中部出现长柱状的肿…     

大豆凝集素与肉鸡小肠黏膜细胞结合规律的研究

该试验以75日龄爱拔益加肉鸡为试验对象,饲喂含有20%生大豆日粮。试验期后,取十二指肠、空肠前段、空肠中段、空肠后段、回肠制作石蜡切片,采用免疫组织化学SP法染色,利用图像分析仪分析大豆凝集素与肠上皮细胞结合情况。结果表明,在鸡的不同肠段,大豆凝集素与十二指肠和空肠前段结合的平均光密度值显著高于空肠中、空肠后和回肠（P＆lt;0.05）;在相同肠段不同部位的细胞,肠绒毛的平均光密度值最高,且与隐窝和肠壁的差异显著（P＆lt;0.05）。这表明了肉鸡的不同肠段上皮细胞糖基化模式具有差异性。     

牦牛肠扭转的简易有效诊疗法

肠管的一段与另一段绞绕在一起或肠管的一段与其附近的肠系膜绞绕在一起时,叫做肠扭转或肠扭结;肠管自身呈纵轴的扭转,叫做肠轴转.也有的书[1]上定义为肠扭转,本文均统称为肠扭转.肠扭转是肠变位的一种类型,其特征为扭转基部呈"麻花状".发病部位常见于空肠(原因可能是空肠的系膜较长,能自由移位),特别在接近回肠部位的空肠,但亦见于十二指肠肝门弯曲部及升部[1],在牦牛生产中常有发生.     

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。