Journal of the Japan Veterinary Medical Association
Online ISSN : 2186-0211
Print ISSN : 0446-6454
ISSN-L : 0446-6454
Volume 69 , Issue 7
Showing 1-5 articles out of 5 articles from the selected issue
Farm Animal Medicine and Animal Health
  • Seiichi HAGIWARA, Chihiro KANNO, Junichi ITO, Kazuhisa HIROTA, Masashi ...
    Type: Original Article
    2016 Volume 69 Issue 7 Pages 383-388
    Published: July 20, 2016
    Released: August 20, 2016
    JOURNALS FREE ACCESS

    To evaluate the effects of artificial insemination (AI) using sex-sorted semen on the sex of offspring and survival of Holstein dams, the medical records of Holstein dams (n=379,468) with AI history resulting in parturition and the medical records of their offspring were collected from 16 agricultural mutual aid associations in Hokkaido and examined. The proportion of females among the offspring that were conceived using sex-sorted semen (heifers 92.3%, cows 89.4%) was significantly higher than that of offspring conceived using conventional semen (heifers 49.1%, cows 45.4%, P<0.01). The occurrence of stillbirths when cows were conceived using sex-sorted semen (6.1%) was significantly less than when conventional semen (7.7%, P<0.01) was used. Heifers and cows that were impregnated through the use of sex-sorted semen had a significantly higher survival rate one-year after their parturition (P<0.01) than the heifers and cows that were impregnated through the use of conventional semen. Results of this study indicate that AI using sex-sorted semen increases the proportion of female offspring and extends the life of the dam in dairy cattle.

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  • Yuji YAGUCHI, Makoto MATSUBAYASHI, Tomoko ITAHASHI, Yuki FUJII, Tokio ...
    Type: Short Communication
    2016 Volume 69 Issue 7 Pages 389-393
    Published: July 20, 2016
    Released: August 20, 2016
    JOURNALS FREE ACCESS

    Two 83-day-old pigs presented with emaciation, and were euthanized for laboratory examination. Severe extensive ulcerative colitis was observed in the animals, and a very large number of trophozoites were seen at the lesion. These parasites were genetically identified as E. polecki subtype 3. Through pathological, bacteriological, and virological analyses, it was suggested that the parasite could be associated with the ulcerative colitis in these pigs.

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Small Animal Medicine
  • Satoshi KOMAZAWA, Shinji SHIBATA, Hiroki SAKAI, Yusuke ITOH, Mifumi KA ...
    Type: Original Article
    2016 Volume 69 Issue 7 Pages 395-400
    Published: July 20, 2016
    Released: August 20, 2016
    JOURNALS FREE ACCESS

    We conducted the following analysis to understand the epidemiologic features of domestic dogs, histologically diagnosed tumors, and the crude incidence of tumors in Gifu prefecture, between April 2013 and March 2014. Among the tumor reports of 33.6% of animal hospitals in Gifu prefecture, we analyzed 731 diagnostic cases. We adjusted the number of domestic dogs and tumor cases by the response rate to the questionnaire, and then calculated the crude incidence of tumors and the crude incidence of malignant tumors. The crude incidence of tumors was 1.5% and the crude incidence of malignant tumors was 0.6%. In addition, the crude incidence of tumors (crude incidence of malignant tumors) was significantly (P<0.05) higher in Dachshunds at 2.6% (1.3%), Shih Tzus at 2.4%, Schnauzers at 2.5% (1.4%), Pugs at 3.8% (1.9%), Welsh corgis at 3.3% (2.2%), Beagles at 2.2% (1.4%), French bulldogs at 3.2% (1.3%), Shetland sheepdogs at 3.2%, Labrador retrievers at 3.2% (2.5%), Golden retrievers at 2.7% (2.2%) and Bernese mountain dogs at 8.2% (7.1%) than in all breeds. In contrast, the crude incidence of tumors (crude incidence of malignant tumors) was significantly (P<0.05) lower in Poodles at 1.1% (0.3%), Chihuahuas at 0.5% (0.3%), Pomeranians at 0.9%, Shibas at 0.7% (0.3%) and Mixed breeds at 1.0% (0.6%) than in all breeds.

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  • Keishi OWAKI, Yusuke ITO, Mihumi KAWABE, Mami MURAKAMI, Tokuma YANAI, ...
    Type: Short Communication
    2016 Volume 69 Issue 7 Pages 401-404
    Published: July 20, 2016
    Released: August 20, 2016
    JOURNALS FREE ACCESS

    Feline nasopharyngeal polyp is defined as a pedunculated non-neoplastic lesion that originates from the middle ear or auditory tube. The present study describes the cytopathological features of four feline nasopharyngeal polyps. In the imprint smear from all cases, single or clustered ciliated epithelial cells with many neutrophils and macrophages, scattered lymphocytes and plasmacytes were observed. Histologically, these ciliated cells were the ciliated pseudostratified epithelium covering the polyps, and the existence of ciliated cells was suspected to be the characteristic cytological findings of feline nasopharyngeal polyps that originate from the middle ear or auditory tube.

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Veterinary Public Health, Wildlife and Environmental Conservation
  • Yuri NAKAGAWA, Yuki OSHIMA, Tsutae KASHIMA, Kazunori ODA, Fumie KAJIKI
    Type: Original Article
    2016 Volume 69 Issue 7 Pages 405-409
    Published: July 20, 2016
    Released: August 20, 2016
    JOURNALS FREE ACCESS

    A study was carried out of the clinical and pathological features of five bovine cases of adenocarcinoma of the endometrium that were detected retrospectively at the Meat Inspection Station, Kanagawa Prefectural Government over sixteen years. All five cases were Holstein cows, and the average age was 5.8 years old. Grossly, in the progressed cases, the uterine horn and uterine body wall were diffusely thickened and had hardened. Cratered depressions were observed in four cases on the surfaces of the uterine tumors, and constriction of the uterine horn was observed in one case. All five cases had metastases, of which three cases had disseminated metastases. Microscopically, the uterine tumors formed a duct-like configuration in the abundant connective tissue in four cases, but not in one case. Immunohistologically, tumor cells in all five cases were positive for cytokeratin, but negative for vimentin. Induration of the uteri by rectal palpation was observed in two of the three cases examined, which finding might be helpful for the antemortem diagnosis of bovine cases of adenocarcinoma of the endometrium, depending on the disease progression.

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