Journal of the Japan Veterinary Medical Association
Online ISSN : 2186-0211
Print ISSN : 0446-6454
ISSN-L : 0446-6454
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Volume 68, Issue 11
Displaying 1-4 of 4 articles from this issue
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Farm Animal Medicine and Animal Health
  • Pathogenicity in Day Old Chicks of Escherichia coli Isolated From Cecum of Chickens Not Affected by Colibacillosis
    Asami KATO, Jun SASAKI, Konomi KURAMOCHI, Takeshi KAWASAKI, Masanobu G ...
    Article type: Original Article
    2015 Volume 68 Issue 11 Pages 693-698
    Published: November 20, 2015
    Released on J-STAGE: December 20, 2015
    DOIhttps://doi.org/10.12935/jvma.68.693
    JOURNAL FREE ACCESS
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    Escherichia coli (E. coli) isolated from the cecum of chickens not affected by colibacillosis was inoculated into day-old chicks, and its pathogenicity was histopathologically investigated to identify the association between chicken colibacillosis and resident cecal E. coli of chicken. All five strains (A, B, C, D, E) obtained were identified as E. coli. Strain C was classified into O8 serotype, but none of the other strains could be classified. In an experimental study, all strains except strain E caused death. Cellulitis was frequently found in chicks who died two days postinoculation, and pericarditis was found in one chick. In the surviving chicks, cellulitis at the inoculation site and yolk sac remnant was observed grossly, and mild pericarditis was observed histologically. Bacterial colonies at the inoculation site and yolk sac consisted of Gram-negative bacteria. This study revealed that E. coli isolated from the cecum of chickens not affected by colibacillosis has pathogenicity in day-old chicks when inoculated intramuscularly.
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  • Proceedings of the Slide-Seminar held by the Livestock Sanitation Study Group in 2014 Part 5
    Kenji KAWASHIMA, [in Japanese], [in Japanese], [in Japanese], [in Japa ...
    Article type: Data and Information
    2015 Volume 68 Issue 11 Pages 699-702
    Published: November 20, 2015
    Released on J-STAGE: December 20, 2015
    DOIhttps://doi.org/10.12935/jvma.68.699
    JOURNAL FREE ACCESS
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Small Animal Medicine
  • Molecular Diagnosis of Infective Endocarditis Caused by Streptococcus canis in a Dog
    Michihito TAGAWA, Eiji OHASHI, Kinuyo MOTOMURA, Shiori CHIBA, Noriyuki ...
    Article type: Short Communication
    2015 Volume 68 Issue 11 Pages 703-707
    Published: November 20, 2015
    Released on J-STAGE: December 20, 2015
    DOIhttps://doi.org/10.12935/jvma.68.703
    JOURNAL FREE ACCESS
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    A 10-year-old male mixed breed dog was brought to the Veterinary Medical Center at Obihiro University because of continuing fever and depression for three weeks. A heart murmur and echocardiographic findings that revealed vegetation in the mitral valves were observed in the dog. Although antibiotics and other drugs were administered, the clinical symptoms of heart failure worsened on Day 7, and the dog died of pulmonary edema on Day 10. At the necropsy, a gross examination revealed mild cardiac dilatation and multifocal vegetations in the mitral valves. Staphylococcus haemolyticus had been detected by blood culture, while DNA fragments with 100 % similarity to Streptococcus canis were detected by PCR and sequence analysis using the vegetation. It was thought that the result of the blood culture was more likely to be contamination, and molecular techniques revealed that the infective endocarditis in the case was caused by Streptococcus canis. It was necessary to consider that the bacterium which causes infective endocarditis might be different from that cultured from blood.
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Veterinary Public Health, Wildlife and Environmental Conservation
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