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Antimicrobial therapy is a useful tool to control bovine mastitis caused by Staphylococcus aureus, as consequence an increase in staphylococci resistant cases has been registered. Alternative strategies are desirable and bacteriocins represent attractive control agents to prevent bovine mastitis. The aim of this work was to evaluate the activity of five bacteriocins synthesized by Bacillus thuringiensis against S. aureus isolates associated to bovine mastitis. Fifty S. aureus isolates were recovered from milk composite samples of 26 Holstein lactating cows from one herd during September 2007 to February 2008 in México and susceptibility of those isolates to 12 antibiotics and 5 bacteriocins from B. thuringiensis was evaluated. S. aureus isolates were mainly resistant to penicillin (92%), dicloxacillin (86%), ampicillin (74%) and erythromycin (74%); whereas susceptibility to gentamicin, trimethoprim and tetracycline was detected at, respectively, 92%, 88%, and 72%. All S. aureus isolates showed susceptibility to the five bacteriocins synthesized by B. thuringiensis, mainly to morricin 269 and kurstacin 287 followed by kenyacin 404, entomocin 420 and tolworthcin 524. Our results showed that S. aureus isolates had differences in the antimicrobial resistance patterns and were susceptible to bacteriocins produced by B. thuringiensis, which could be useful as an alternative method to control bovine mastitis. 相似文献
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犬传染病是危害养犬业健康发展的主要疾病,来自警犬方面的统计资料证实,全国每年免疫警犬的发病率为14％,其中传染病占60％以上,因传染病而死亡的犬超过死亡犬总数的80％。从近几年的临床实践和国外的有关报道来看,危害严重的犬病毒病主要有犬瘟热、犬细小病毒感染、犬传染性肝炎、犬冠状病毒病、犬副流感及狂犬病等6种疾病, 相似文献
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D J Coffey 《The Journal of small animal practice》1971,12(2):123-131
The importance of the identification of the ancestral species of a domestic animal, together with a study of its behaviour, is emphasized. Practical implications of the critical period of socialization are appraised. Two examples of social behaviour, eliminative and sexual, are dealt with in some detail and clinical problems associated with sexual behaviour are discussed. The complexity of the interspecific relationship between man and the domestic dog is outlined. Brief consideration is given to the interaction between psycho-behaviour and organic disease. Hope is expressed that small animal clinicians will be stimulated to take an interest in psycho-behavioural aspects of canine practice. Résumé. L'auteur souligne l'importance de l'identification de la lignée ancestrale et de l'étude simultanée du comportement d'un animal domestique. Il discute des implications pratiques de la période ‘critique’ de la socialisation, et donne deux exemples de comportement social éliminatif et sexuel qu'il étude en détail notamment quant aux problèmes cliniques relevant du comportement sexuel. On met en évidence fa complexité des rapports entre l'espèce humaine et le chien domestique. Quelques brèves considérations sont évoquées à propos des interactions entre le psycho-comportement et les affections organiques, et on exprime l'espoir d'une stimulation de l'intérêt de la part des praticiens des petits animaux pour l'aspect psycho-comportemental de l'exercice de la médecine vétérinaire canine. Zusammenfassung. Die Bedeutung der Identifizierung der Speziesvorfahren eines Haustiers zusammen mit einer Untersuchung seines Verhaltens wird betont. Die praktischen Folgerungen aus der kritischen Periode der Vergesellschaftung werden benannt. Zwei Beispiele des Gruppenver-haltens, des eliminativen und des sexuellen, werden mit einigen Einzelheiten behandelt und klinische Probleme, die mit dem sexuellen Verhalten in Beziehung stehen, besprochen. Die Komplexität der zwischenartlichen Beziehung zwischen dem Menschen und dem domestizierten Hund wird umrissen. Die Wechselwirkung zwischen psychischem Verhalten und organischer Erkrankung wird kurz betrachtet. Es wird der Hoffnung Ausdruck gegeben, dass tierärztliche Kliniker sich angeregt fühlen, sich für die psychischen Verhaltensfragen im Zusammenhang mit der Behandlung von Hunden zu interessieren. 相似文献
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Gottlieb S Wigney DI Martin PA Norris JM Malik R Govendir M 《Australian veterinary journal》2008,86(4):147-152
OBJECTIVES AND DESIGN: 1) A prospective study to determine in vitro concentrations for a range of fluoroquinolones, gentamicin and amoxycillin-clavulanate required to inhibit growth of recently collected, feline and canine Escherichia coli and canine Staphylococcus intermedius isolates. 2) A comparative retrospective study to compare the minimum inhibitory concentrations (MICs) of ciprofloxacin, enrofloxacin and amoxycillin-clavulanate for archived canine E coli and S intermedius isolates collected ten to twenty years earlier, with those for recently collected isolates. PROCEDURE: Susceptibility was assessed using disk diffusion, agar dilution susceptibility testing and Epsilometer tests (E-tests) for both recently collected and archived isolates. RESULTS: All feline E coli isolates and recently collected canine S intermedius isolates were susceptible to all fluoroquinolones. There was a statistically significant increase in the MIC range of ciprofloxacin and enrofloxacin for recently collected E coli, and in the MIC range of amoxycillin-clavulanate for recently collected S intermedius isolates compared to archived isolates. Twelve of 59 recently collected canine E coli isolates were resistant to both ciprofloxacin and enrofloxacin. Resistant canine E coli isolates were associated with complicating host or infection site factors. CONCLUSION: This is the first report comparing the MICs for all veterinary fluoroquinolones currently available in Australia for a representative sample of canine and feline E coli and canine S intermedius isolates. Importantly, this study identified 12 of 59 canine E coli isolates resistant to fluoroquinolones and identified the development of low level resistance in canine E coli to ciprofloxacin and enrofloxacin and canine S intermedius to amoxycillin-clavulanate. 相似文献
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Pathology of canine ehrlichiosis (tropical canine pancytopenia) 总被引：8，自引：0，他引：8
P K Hildebrandt D L Huxsoll J S Walker R M Nims R Taylor M Andrews 《American journal of veterinary research》1973,34(10):1309-1320
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Calretinin is a calcium-binding protein expressed abundantly in the central and peripheral neural tissues. It has been demonstrated to be a valuable marker in human testicular neoplasia. The immunohistochemical expression of calretinin has been studied in 102 samples of normal (n=25) and three different neoplastic canine testicular tumours (n=77). In normal canine testis, calretinin expression was restricted to Leydig and Sertoli cells of the testis. In tumour tissues, calretinin expression was detected in all tumours investigated (interstitial cell tumours, seminoma, and Sertoli cell tumours), with a cytoplasmic and nuclear pattern of cellular distribution. The present work reports, for the first time, calretinin immunohistochemical expression in normal and neoplastic canine testis. 相似文献
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Telomerase targeted cancer gene therapy is being exploited for treatment of human cancer. The high incidence and many comparative aspects of human and canine cancer and the compliance and dedication of dog owners to treat cancer makes the canine pet population a good clinical model for investigating and developing new cancer therapeutics. Here, we report that the human telomerase promoter operates in canine cells, suggesting that human telomerase promoter-driven cancer therapy can be used to treat cancer in canines. Therefore, the canine pet population can act as a clinical model for new drug development based on telomerase therapeutics. 相似文献
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Gore TC Lakshmanan N Duncan KL Coyne MJ Lum MA Sterner FJ 《Veterinary therapeutics : research in applied veterinary medicine》2005,6(1):5-14
A challenge-of-immunity study was conducted to demonstrate immunity in dogs 3 years after their second vaccination with a new multivalent, modified-live vaccine containing canine adenovirus type 2 (CAV-2), canine parvovirus (CPV), and canine distemper virus (CDV). Twenty-three seronegative pups were vaccinated at 7 and 11 weeks of age. Eighteen seronegative pups, randomized into groups of six dogs, served as challenge controls. Dogs were kept in strict isolation for 3 years following the vaccination and then challenged sequentially with virulent canine adenovirus type 1 (CAV-1), CPV, and CDV. For each viral challenge, a separate group of six control dogs was also challenged. Clinical signs of CAV-1, CPV, and CDV infections were prevented in 100% of vaccinated dogs, demonstrating that the multivalent, modified-live test vaccine provided protection against virulent CAV-1, CPV, and CDV challenge in dogs 7 weeks of age or older for a minimum of 3 years following second vaccination. 相似文献
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犬附红细胞体病的诊治体会 总被引：1，自引：0，他引：1
犬附红细胞体病是由附红细胞体寄生于犬的血液、游离在血浆中或附着在红细胞表面所引起的一种血液寄生虫病。临床上以发热、贫血、黄疸等为主要特征。2004年以来,笔者诊治了8例病犬出现持续高热为主要特征的疾病,经临床与实验室诊断,确诊为犬附红细胞体病,经治疗5天后恢复正常。现举1例报道如下： 相似文献
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20 0 0年 9月 3 0日一狼种病犬来江苏省牧校动物医院就诊。一年来 ,已有 4例症状相同病犬来我院就诊 ,为引起同行重视 ,特报道如下。1 症状 该犬雄性 ,4岁 ,体重 3 0 kg。眼球内陷 ,眼结膜轻度黄疸 ,体温 3 9.8℃。腹围膨隆如桶状 ,腹壁紧张 ,严重腹水 ;腹壁、后肢严重浮肿 ,指压留痕 ;触摸背脊 ,脊突高耸 ,十分消瘦。据畜主讲 :初期症状不明显 ,认为是发胖 ,后来不愿吃东西 ,并不断有腹泻出现 ,而后腹围逐渐增大。穿刺腹壁 ,放出清亮透明腹水约四脸盆。2 诊断 根据临床症状 ,怀疑为华枝睾吸虫病 :作粪便检查寻找虫卵 ,镜检见到黄褐色、… 相似文献
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犬肠炎是犬的常见内科病,病因复杂,严重影响了养犬业的发展及经济效益,挫伤了养犬人的积极性。现将犬肠炎病因分析与综合防治阐述如下： 相似文献
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Soma T Ishii H Hara M Ohe K Hagimori I Ishikawa Y Taneno A 《The Veterinary record》2003,153(16):499-501
Canine distemper virus (CDV) antigen was detected in the serum of dogs by an ELISA and the results of this assay were compared with an anti-CDV immunoglobulin M (IgM) antibody test. In paired sera from 26 naturally infected dogs, the antigen-positive rate was 26.9 per cent at the first examination and 11.5 per cent at the second examination two to three weeks later. The antigen was detected in three of the 10 dogs which were negative for anti-CDV IgM antibody at the first examination. It could also be detected in the serum of between eight and two of 40 specific pathogen-free dogs vaccinated against CDV, for up to four weeks after they were vaccinated. 相似文献