共查询到20条相似文献，搜索用时 125 毫秒
1.
2.
3.
为了探索温州地区羊链球菌病的防控方法,研究羊链球菌病的病原血清群、生化特性、羊链球菌对药物的敏感性及耐药性,避免临床抗生素的滥用,试验采用分离纯化、生化试验、PCR鉴定、链球菌分群试验、药敏试验等方法对从温州瓯海、文成、苍南、永嘉等地羊场送检的8份疑似羊链球菌病料进行了研究,并且根据试验结果进行临床用药与预防。结果表明:分离出8株链球菌,其中C群链球菌6株,D群链球菌2株;生化试验结果符合链球菌特征;PCR鉴定得到的引物大小与链球菌通用引物大小吻合;分离出的链球菌均对头孢曲松钠、头孢哌酮、头孢噻肟、氨苄西林等药物高度敏感,对青霉素钠、阿莫西林、庆大霉素、链霉素、诺氟沙星等药物耐药;用高敏感药物对发病初期1 200只山羊进行治疗,治愈率高达98%;对爆发羊链球菌病C群的6家羊场羊只进行免疫,免疫保护率为97%;对爆发羊链球菌病D群的2家羊场羊只进行免疫,免疫保护率仅为50%。 相似文献
4.
从河南省荥阳、淇县、修武、兰考、郑州等地送检鸡只的病料中分离到17株链球菌。经对其中13个典型菌株进行系统生化分群鉴定,结果表明,上述地区发生的鸡链球菌病主要是由C群兽疫链球菌(6/13)、D群鸟链球菌(4/13)和D群粪链球菌(2/13)引起,另有1株未能定群。 相似文献
5.
猪链球菌病病原分群鉴定和药敏试验 总被引：5，自引：0，他引：5
从新郑、洛阳、中牟、新乡等16个县(市)猪场病料中,检出并分离到16株链球菌,对其进行了系统的生化分群鉴定试验和药敏试验。生化分群鉴定试验结果表明,我省发生的猪链球菌病是由E群链球菌(6/16)、D群猪链球菌(4/16)、C群兽疫链球菌(3/16)、L群链球菌(2/16)和未知群(1/16)链球菌引起的,其分布无明显的区域性。药敏试验结果表明,大多数菌株对利复平、氧氟沙星、青霉素敏感;对头孢唑啉、卡那霉素次之;对杆菌肽、复方新诺明等耐药。 相似文献
6.
山西省猪链球菌的分离鉴定及药敏试验 总被引：2，自引：1，他引：1
对2007年来自山西省不同地区的疑似猪链球菌病病料进行分离鉴定,共分离到12株链球菌,对这12株链球菌进行了生化试验、兰氏分群A-G诊断试剂鉴定、动物试验和药敏试验.结果表明,其形态、染色、培养特性及理化特性符合链球菌的特点,大多具有α或β溶血,生化试验结果不稳定;山西省发生的猪链球菌病主要由F群(4/12)、C群(3/12)、D群(2/12)和G群(2/12)链球菌引起,其分布无明显地域性;动物致病性试验表明,12株分离株中,10株对小鼠有不同程度的致病作用;10株致病性菌株对氨苄西林、氟哌酸、四环素高度敏感. 相似文献
7.
8.
猪链球菌多价灭活苗研究及免疫效果观察 总被引：6，自引：0，他引：6
选C、D、L、E四群血清菌株为菌种、制备多价链球菌灭活苗，用于发生或发生过链球菌的猪场作预防，通过20多个集约化猪场小区试验，证明该灭活苗安全性好，免疫效果明显。 相似文献
9.
10.
11.
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
12.
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
13.
14.
15.
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
16.
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
17.
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 Objective: To determine the accuracy of 2 published and 2 unpublished techniques of centesis of the lateral compartment of the femorotibial joint.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
18.
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
19.
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
20.
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