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对新疆地区奶牛乳房炎(包括隐性乳房炎和临床乳房炎)进行了发病率和致病菌进行了流行病学调查。结果发现新疆地区7个牧场隐性乳房炎发病率在11.3%~28.8%。大部分乳房炎发病为单一细菌感染引起。隐性乳房炎中共分离得到9个不同种属的病原菌,以凝固酶阴性葡萄球菌、乳房链球菌和无乳链球菌为最常见。临床乳房炎样品中共分离得到11个不同种属的样品,流行度最高的四种病原菌为凝固酶阴性葡萄球菌、乳房链球菌、大肠杆菌和肺炎克雷伯菌。在隐性乳房炎和临床乳房炎样品中均分离得到了金黄色葡萄球菌。 相似文献
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乳房炎是导致奶牛业经济损失最严重的疾病之一,分为临床型与隐性型.而奶牛隐性乳房炎发生率的高低和致病菌的种类可反映出牛群质量好坏及生产管理水平(包括营养、环境卫生、日常管理、挤奶操作等)高低.为了解金华某牧场奶牛隐性乳房炎的流行情况及病原感染状况,进行了隐性乳房炎的调查,并对其主要致病菌进行了分离鉴定和药物敏感性试验,为该场养殖户防治奶牛隐性乳房炎提供科学依据. 相似文献
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余汉党 《河南畜牧兽医(综合版)》2010,31(3):8-9
对平项山市某公司的奶牛场进行了隐性乳房炎普查、病原细菌分离鉴定和主要病原菌药敏试验,以期对该地区奶牛隐性乳房炎的防控提供理论依据。 相似文献
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奶牛隐性乳房炎的流行病学及病原调查 总被引:4,自引:0,他引:4
对信阳市奶牛场、奶牛养殖小区和个体奶牛户进行隐性乳房炎的流行病学调查及致病菌的分离鉴定,结果隐性乳房炎的发病率为51.81%(129/249),个体饲养的奶牛隐性乳房炎阳性率高达68.49%(50/73),从12份被检乳汁中共分离出87株细菌,经生化鉴定其主要致病菌为葡萄球菌、无乳链球菌和大肠杆菌。 相似文献
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为了解辽宁阜新某奶牛场奶牛隐性乳房炎发生情况,采用体细胞计数法对奶牛场中94头临床表现健康的奶牛进行隐性乳房炎筛查,对检测后的阳性乳样进行链球菌的分离鉴定,并采用微量肉汤稀释法对分离所得的链球菌进行药敏试验。结果显示:该牛场奶牛隐性乳房炎的检出率为48.94%;对34株奶牛隐性乳房炎链球菌分离株进行体外药敏试验,发现菌株对头孢氨苄、磺胺间甲氧嘧啶和磺胺甲基异恶唑耐药率最高(100%);对苯唑西林、阿奇霉素、林可霉素、多西环素、土霉素、红霉素的耐药率均在82.4%以上;对氨苄西林、阿莫西林和环丙沙星较敏感,敏感率分别为44.1%、50.0%及52.9%。结果表明:该奶牛场隐性乳房炎源链球菌多重耐药现象严重。 相似文献
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MA Chun-xia LI Jun QIN Yong ZHONG Shu-hong TAO Li PENG Hao LAN Mei-yi YANG Wei CHEN Ze-xiang HU Shuai LI Chang-ting ZHAO Xiao-hong 《中国畜牧兽医》2015,42(9):2481-2486
To investigate the pathogen of bovine respiratory disease complex (BRDC) of a dairy farm in Guangxi, a strain of Mycoplasma and a strain of gram-negative pathogenic bacterium were isolated and identified by the means of field surveys, clinic observation, pathological examination, isolation studies and so on.Treatments were taken according to drug sensitivity test results.The Mycoplasma strain, growing on PPLO medium, formed typical "fried egg" colonies.A 448 bp of oppF fragment was amplified by PCR from the strain and had 98.4% nucleotide identity with Mycoplasma bovis reference isolate PG5 of USA.The biochemical features of the gram-negative bacterial isolate were same with Serratia marcescens.The PCR amplified 16S rDNA of the gram-negative pathogenic bacterium strain was 1 400 bp.It shared 99.0% nucleotide identity with other Serratia marcescens reference strains obtained from GenBank.Animal experiment showed that the gram-negative pathogenic bacterium isolate could cause the mice to die.The drug sensitivity tests showed all isolates were sensitive to spectinomycin, azithromycin, amikacin, gentamicin and neomycin.It was effective to treat with dexamethasone and spectinomycin.Pathogen analysis and drug treatment showed that the BRDC was caused by Mycoplasma bovis and Serratia marcescens. 相似文献
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牛呼吸道疾病综合征病例的病原分析 总被引:1,自引:0,他引:1
本试验旨在查清广西某牛场1起牛呼吸道疾病综合征(BRDC)病例的病原,指导牛场进行疾病防控。采取现场调查、临床症状与病理变化、病原分离鉴定等方法对病例病原进行分析,根据病原药敏试验结果进行治疗。从病例的肺脏组织中分离到1株支原体和1株革兰氏阴性致病杆菌。支原体分离株在PPLO固体培养基上可见典型的"煎蛋样"菌落,PCR扩增出牛支原体oppF基因特异性的448 bp目的片段,其oppF基因序列与美国分离的牛支原体国际标准株PG45的核苷酸序列同源性为98.4%。革兰氏阴性细菌分离株生化特性符合黏质沙雷氏菌特性,其16S rRNA基因PCR扩增出1 400 bp的目的片段,测序结果与GenBank上登录的黏质沙雷氏菌的核苷酸序列同源性达到99.0%,对小鼠具有致病性。牛支原体和黏质沙雷氏菌分离株均对壮观霉素、阿奇霉素、阿米卡星、庆大霉素和新霉素高度敏感,用高敏药物壮观霉素联合地塞米松等相关措施进行治疗,收到良好效果。结果表明,引起这次牛呼吸道疾病综合征的病原为牛支原体和黏质沙雷氏菌。 相似文献
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从患病死亡的旧院黑鸡病料中分离纯化得到一株细菌,经染色镜检、生化试验和动物致病性试验,最终鉴定为致病性大肠杆菌。选用临床常用的12种抗生素对该菌株进行了药敏试验.结果显示该菌对庆大霉素、阿米卡星、氟苯尼考敏感;对氨苄西林/克拉维酸、卡那霉素、环丙沙星中敏;对氨苄西林、链霉素等耐药。 相似文献
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Sasaki Y Yamamoto K Kojima A Norimatsu M Tamura Y 《Research in veterinary science》2000,69(3):289-294
In cattle, sheep, and other ruminants, clostridial myonecrosis (gas gangrene) is mostly caused by Clostridium chauvoei, C septicum, C novyi and C sordellii. A polymerase chain reaction (PCR) system using common primers designed from multiple alignment of the 16S rRNA and 23S rRNA genes of Clostridium species was developed to identify pathogenic clostridia. The PCR was performed with total DNA from 26 strains which included seven different Clostridia species. These bacteria were differentiated at species level by the different PCR product patterns. To characterise the 16S-23S rDNA spacer regions of these clostridia further, most PCR products of these bacteria were sequenced. The smallest PCR products of each bacterium represented the fundamental 16S-23S rDNA spacer region; larger PCR products of each bacterium were caused by insertion sequences, i.e. tRNA gene sequences. The authors' observations indicate that the PCR patterns of the 16S-23S rDNA spacer regions have the potential to be used as an identification marker of pathogenic clostridia in gas gangrene. 相似文献
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对广东省佛山市某乌鳢养殖鱼场患病的乌鳢进行病原分离,将疑似分离菌S-1株进行形态和培养特性、生化特性鉴定、PCR鉴定、药敏试验和人工感染等试验。结果表明,该分离菌为舒氏气单胞菌。药敏试验结果表明,本分离菌对壮观霉素、米诺环素、庆大霉素、氧氟沙星、诺氟沙星、头孢类等多种药物敏感。本研究为舒氏气单胞菌病细菌学检测及治疗提供了科学依据。 相似文献
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Staphylococcus hyicus in cattle 总被引:13,自引:0,他引:13
Staphylococcus hyicus (subsp hyicus) was found to be a frequently occurring inhabitant of the skin of cattle. Significant numbers of this bacterium were found to be present in mange lesions of cattle between one and three years old. Experimental inoculations revealed that S hyicus had a pathogenic effect on the superficially scarified skin of young cattle. 相似文献
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用已建立的四重荧光PCR方法、传统国标或行标方法、MALDI Biotyper高通量微生物鉴定法(基质辅助激光解析电离飞行时间质谱法)对随机抽取的14份食品样品进行检测,比较3种检测方法的匹配性。并用四重荧光PCR对农贸市场、大型超市采集的10类食品共205份样品进行检测。旨在研究四重荧光PCR法在食品中检测沙门氏菌、弗氏枸橼酸杆菌、奇异变形杆菌和迟缓爱德华菌的应用及食品中这4种菌的污染情况。在205份食品样品中,受污染的食品有110份,污染率53.66%(110/205),同时检出两种及两种以上致病菌的样品有62份,占污染样品的56.36%(62/110)。迟缓爱德华菌大肠菌、弗氏枸橼酸杆菌、奇异变形杆菌、沙门氏菌的检出率分别为7.80%(16/205)、53.66%(110/205)、26.34%(54/205)、5.85%(12/205)。在这3种检测方法中,四重荧光PCR的特异性好、准确性高,操作简便省时,更适用于食品中4种致病菌的快速检测。抽检的食品样品中存在这4种菌的污染,尤以生禽畜肉和水产品污染严重,需加强对食品加工、流通环节的卫生监管和监测。 相似文献