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仔猪水肿病(edema disease,ED)又称猪溶血性大肠杆菌病,由产志贺样毒素大肠杆菌(SLTEC)引起,其血清型主要有O138、O139、O141等,近年研究表明,该病的发生主要与两个主要毒力因子密切相关,即F18 ab菌毛及志贺样毒素Ⅱ型变异体(SLT-Ⅱe)。该病发病快,病程短,发病率低(15%~20%),但致死率较高(80%~100%)。25-60日龄断奶仔猪多发,同窝中生长发育好,体格健壮的仔猪尤其易感。临床症状主要表现为发病猪眼睑水肿,四肢麻痹,运动失调,步态蹒跚,或出现划水样运动。胃壁及肠黏膜水肿,全身淋巴结水肿。仔猪水肿病多呈地方性流行,目前本病还没有特效… 相似文献
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猪水肿病（ＥＤ）是断奶仔猪常见的一种传染病，与类志贺氏毒素Ⅱ变种（ＳＬＴ－Ⅱｖ）密切相关。本试验用多粘菌素Ｂ从基因工程菌大肠杆菌ＴＢ１中提取ＳＬＴ－Ⅱｖ，作中和试验检测来自江苏等地２６７份屠宰猪血清，发现９份血清有ＳＬＴ－Ⅱｖ的抗体，滴度由１∶４～１∶２５６不等，显示致猪水肿病毒素在猪群的实际存在 相似文献
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猪水肿病是生猪养殖过程中较为常见的急性致死性传染病,其病原为特定血清型产类志贺毒素的大肠埃希菌,多发生于断奶2周内的仔猪群中.患病的仔猪表现为全身水肿和神经症状,该病严重影响仔猪的繁殖成活率和生猪养殖场的经济效益.本文介绍了猪水肿病的发病原因、临床症状、诊断方法以及综合防治措施,以供参考. 相似文献
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正猪水肿病是一种肠毒血型大肠杆菌病,常发生于断奶后两周内的仔猪,然而年龄稍大一点的猪也能受到感染。在丹麦,该病由产志贺毒素Stx2e(vero-toxin 2e)的溶血性F18-阳性大肠杆菌引发。丹麦每年通过实验室可诊断出30~50例新病例。全面介绍的两部内容中的第一部分。1临床症状此病的临床症状为眼睑与前额水肿、神经失调以及突发死亡。该病可以通过用预防断奶后仔猪腹泻的相同措施(低蛋白日粮、限 相似文献
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《畜牧兽医科技信息》2015,(6)
<正>断奶前感染因子能引起年轻断奶猪患病,其中大肠杆菌依然是引起断奶后腹泻和死亡的主要原因,轮状病毒病、球虫病和隐孢子虫病甚至可感染高达6周龄的猪。大肠杆菌产志贺毒素(Stx2e)菌株可引起断奶仔猪和生长猪水肿病,使其突然死亡或表现出神经症状。尽管患猪胃黏膜下层、结肠系膜、眼睑、前额等处发生明显水肿,但肠道黏膜无明显病变。新生仔猪艰难梭菌感染或者断奶仔猪患有多系统衰竭综合征(PMWS)时,肠系膜发生水肿。 相似文献
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猪水肿病(ED)是仔猪断奶前后多发的一种急性肠毒血症,本病为致病性大肠杆菌所产生的内毒素、溶血素和水肿毒素引起的。该病在临床上容易与营养不良性水肿病相混淆,临床确诊本病需进一步通过化验室诊断。 相似文献
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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。 相似文献
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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。 相似文献
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本试验旨在研究两种绿头鸭（白羽绿头鸭和绿头鸭）肌肉营养组成和价值,为绿头鸭肉产品的开发利用提供基础数据和理论依据。选择白羽绿头鸭和绿头鸭60只（每个品种各30只,公母各半）,依照国家标准测定胸肌粗蛋白质、粗脂肪、胆固醇含量及氨基酸、脂肪酸、微量元素和维生素的组成和含量,并对胸肌进行氨基酸评价及脂肪酸营养价值评价。结果显示,白羽绿头鸭肌肉粗蛋白质含量显著低于绿头鸭（P<0.05）;两种绿头鸭肌肉中均检测到17种含量大于0.01%的氨基酸,其中白羽绿头鸭肌肉苏氨酸、组氨酸、丝氨酸和脯氨酸含量显著高于绿头鸭（P<0.05）,赖氨酸、谷氨酸和精氨酸含量显著低于绿头鸭（P<0.05）;检测到13种含量均大于0.01%的脂肪酸,其中白羽绿头鸭硬脂酸和油酸含量显著低于绿头鸭（P<0.05）;检测到9种矿物质元素（钠、镁、钾、钙、锰、铁、铜、锌和硒）,两种绿头鸭差异不显著（P>0.05）;检测到8种维生素,白羽绿头鸭肌肉维生素B1含量显著高于绿头鸭（P<0.05）,维生素D和维生素E含量显著低于绿头鸭（P<0.05）。两种绿头鸭肌肉氨基酸比例接近世卫组织推荐的理想模式,富含人体所需的矿物质元素和维生素,具有广阔的开发利用前景。 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
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。 相似文献
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Reasons for performing study: Clinical experiences indicate that centesis of the lateral compartment of the femorotibial joint is often unsuccessful. Objective: To determine the accuracy of 2 published and 2 unpublished techniques of centesis of the lateral compartment of the femorotibial joint. Hypothesis: It was hypothesised that a drug can be administered into the lateral compartment of the femorotibial joint via a diverticulum of this joint that surrounds the medial aspect of the long digital extensor tendon and that this technique is more accurate than described techniques of centesis of this compartment. Methods: Twenty‐four stifles of 12 horses were divided equally into 4 groups and a radiocontrast medium injected into the lateral compartment of the femorotibial joint of each group using a hypodermic needle inserted: 1) caudal to the lateral patellar ligament and proximal to the tibial plateau, 2) caudal to the long digital extensor tendon and proximal to the tibial plateau, 3) between the long digital extensor tendon and bone of the extensor groove of the tibia or 4) directly through the long digital extensor tendon until it contacted bone. Twelve veterinary students who had no experience using any of these techniques performed the injections. Accuracy of each technique was determined by examining radiographs obtained after injecting the contrast medium. Results: The most successful technique for arthrocentesis was by inserting a needle through the long digital extensor tendon. This approach was successful in all attempted cases, whilst other techniques had lower rates of success. Conclusions: The lateral compartment of the femorotibial joint can be accessed accurately by inserting a needle through the long digital extensor tendon as it lies within the extensor groove. Other techniques may not be as accurate for clinicians inexperienced in arthrocentesis of the lateral compartment of the femorotibial joint. 相似文献
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Marioni-Henry K Vite CH Newton AL Van Winkle TJ 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2004,18(6):851-858
A retrospective review of records of 205 cats with histologically confirmed disease of the spinal cord was performed to identify the prevalence of disease in this nonrandomly selected population of cats. Clinical records were reviewed, and age, duration of neurologic illness, and clinical and histopathologic findings in cats with spinal cord disease were abstracted. Disease processes were classified into 7 categories and 23 groups. The most common diseases affecting the spinal cord of cats were feline infectious peritonitis (FIP), lymphosarcoma (LSA), and neoplasia of the vertebral column secondarily affecting the spinal cord. Information on age, onset and duration of clinical signs, and lesion localization at the postmortem examination in cats belonging to the 7 categories of disease were analyzed to create a practical list of differential diagnoses. Cats were also subcategorized into 3 groups based on their age at death. FIP was the most common disease of cats younger than 2 years of age. LSA and vertebral column neoplasia were the most common diseases affecting cats between 2 and 8 years of age. Vertebral column neoplasia was the most common disease affecting cats older than 8 years of age. Results of this histopathologic study showed that FIP and LSA were the most common disease processes affecting the spinal cord of cats. However, at least 21 other groups of diseases and their relative prevalence were identified. 相似文献
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应用光镜和透射电镜技术，观察了3～6月龄比格犬甲状腺的显微和超微结构。结果表明，比格犬甲状腺实质由滤泡和滤泡旁细胞构成。滤泡呈圆形或椭圆形，直径20．22～220．00μm，平均90.80μm；由单层立方上皮细胞围成，细胞高度3．04～7.11μm，平均5.18μm，电镜下可见功能状态不同的两型滤泡上皮细胞；滤泡旁细胞很多，直径4．40～8．82μm，平均6．23μm，位于滤泡之间或镶嵌于滤泡上皮细胞之间，也可聚集在一起形成滤泡样结构，胞质内含有大量的分泌颗粒，电镜下也可见两种类型的滤泡旁细胞。 相似文献
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根据JJF1059-1999《测量不确定度评定与表示》建立了高效液相色谱法测定鸡肉中土霉素残留测量的不确定度评定方法,评定过程包括建立测量程序、分析不确定度来源、对不确定度分量进行量化。将不确定度归类为两大类。随机效应导致的不确定度可以通过一系列具有统计意义的重复观测值进行A类评定;系统效应导致的不确定度通过各测量器具、设备的说明书、校准证书提供的参数进行B类评定。本方法鸡肉中土霉素残留量的相对合成标准不确定度约为3.9%。 相似文献