Journal of the Japan Veterinary Medical Association
Online ISSN : 2186-0211
Print ISSN : 0446-6454
ISSN-L : 0446-6454
Volume 45 , Issue 10
Showing 1-14 articles out of 14 articles from the selected issue
  • HIROSHI FUJISE
    1992 Volume 45 Issue 10 Pages 731-737
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
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  • YUTAKA OHNUNA, HIROSHI KONDO, HITOSHI SAINO, MASAJI TAGUCHI, AKIRA OHN ...
    1992 Volume 45 Issue 10 Pages 738-741
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
    Necrotic enteritis caused by C. perfringens type C broke out on a breeding pig farm in the Ishikari region in February 1990. Thirteen newborn piglets of a litter had hemorrhagic diarrhea and became weak on the second day after birth. Most of them died on the following day. At autopsy, the dark-red jejunum with subserous emphysema was found to be grossly conspicuous. The lumen contained a dark-red mass of coagulum. Microscopically, the jejunum was necrotic and hemorrhagic throughout the mucosa, submucosa and part of tunica muscularis. By inoculating an intestinal supernatant fluid from 2 piglets into mice, toxins were demonstrated and not neutralized by the antiserum to the toxin of C. perfringens type A. C. perfringens was isolated 108 to 109/g from the intestinal contents of 10 piglets, and all the 10 isolates were identified as being type C by the toxin-antitoxin neutralization test. C. perfringens type C was not isolated from the sow having diseased piglets, but was so from 1 of 4 breeding sows.
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  • NORIYUKI TAIRA, JATUPORN SMITANON, MASAHIRO HAZEYAMA, SHIGEYOSHI URA
    1992 Volume 45 Issue 10 Pages 742-746
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
    The experiments using small experimental animals were carried out for obtaining basic data to maintain the calf strain of Strongyloides papillosus (Himeji strain, 1988; SPL).
    To determine the susceptibility of some species of small animals, a preliminary experiment was carried out. Rabbits, mice, Mongolian gerbils, rats and guinea pigs were exposed to 10, 000-100, 000 infective larvae of SPL. Fecal egg output and SPL worms in the intestine were recognized in rabbits, whereas negative data were found in other species of animals.
    Furthermore, the effect of dexamethasone (DEXA) on SPL infection in rabbits was examined. Rabbits administrated with 4 different doses of DEXA were exposed to 50, 000-100, 000 infective larvae of SPL. Fecalegg output was observed in all exposed rabbits and 13 (72%) of 18 rabbits died from 12 to 29 days after exposure. The dead rabbits obviously had a reduction in body weight. The maximum EPG and survival time of rabbits infected with SPL were variable in individual rabbits, and no effect of DEXA administration on SPL infection was noted. A few coccidial oocysts in the feces were also observed together with SPL eggs.
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  • HIDEO IDEGUCHI, MICHIYUKI MATSUDA, NORIYUKI TAIRA, HOMARU NISHITATENO, ...
    1992 Volume 45 Issue 10 Pages 747-751
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
    From June to November 1986, a biweekly parasitological survey was carried out on calves on a farm, in Miyazaki Prefecture, where Sudden death due to an unknown cause has occurred since 1983. On June to December, a total of 20 newborn calves introduced to the farm at 4 different times (4 Groups) were examined by the modified McMaster technique. Strongyloides papillosus (SPL) eggs were detected in all calves (100%). The eggs in the feces appeared 2 weeks after calves were introduced to the farm and reared on sawdust litter. The highest EPG values, as much as about 10, 000, were noted in many calves from 4 to 6 weeks after the eggs appeared in the feces, and the eggs disappeared in the following autumn. Coccidial oocysts were detected 19 of 20 (95%), but the OPG values were below 5, 000. Trichuris eggs were also detecetd in some calves, and the maximum EPG was 800.
    Two calves with an extremely high SPL-EPG value died. One died suddeny, and the other died from emaciation. The season of heavy infection with SPL among the calves almost coincided with the season when the Sudden death occurred. This is the first report on a periodical parasitological survey of calves on a farm where Sudden death occurred.
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  • TSUGUAKI FUKUYASU, YOSHIHISA AMADA, KEIKO SAITO, KIYOMI ASHIDA
    1992 Volume 45 Issue 10 Pages 752-756
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
    Four hundred and two and 1, 041 sera were collected from brood sows and fattening pigs on 40 farms in 11 prefectures respectively, and antibody titers to Pasteurella multocida serotype A and D were examined by an indirect hemagglutination test.
    By examining the 402 sows and 1, 041 fattening pigs, positive ratios of antibody to P. multocida serotype A were 84.8% in sows and 52.9% in fattening pigs and those for the P. multocida serotype D were 11.9% in sows and 10.8% in fattening pigs. Antibodies to P. multocida serotype A were positive among the sows and fattening pigs raised in all of the 11 prefectures. All sows in four of the prefectures and all fattening pigs in only one prefecture were negative for antibody to P. multocida serotype D. On the other hand, the sows showing positive antibody to P. multocida serotype A and D were distributed in 25 of 26 farms and 13 of 26 farms, and fattening pigs showing that were distributed in 26 of 27 farms and 17 of 27 farms, respectively. On examination of fattening pigs, those younger than 3 months, 3 to 6 months and older than 6 months of age, antibody positive ratios to serotype A were 14.8%, 74.1% and 79.4%, respectively. A similer tendency was observed regarding serotype D.
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  • TSUGUYUKI NAKAO, WAKAE YOSHIKAWA, MACHIKO KAWAMOTO, SHUNICHI KAMIMURA, ...
    1992 Volume 45 Issue 10 Pages 757-760
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
    Two hundreds and two calves with congenital defects were morphologically and functionally investigated regarding their thyroids. They were classified into 9 groups by their body system, in which 18 weak calves (less than 90 days old) and 20 calves with retarded growth (more than 90 days old) were included. No apparent congenital defects were found clinically or by necropsy of these calves.
    Of 202 calves, only 5.8% in male and 20.6% in female were found to have normal growth. The average weight and ratio to body weight of thyroids showed no difference between the groups.
    Significantly low serum thyroxin (T4) levels were found in the groups of weakness and retarded growth against the groups of normal control and some other groups (P<0.01 or 0.05). Calves with thyroxin levels out of normal range, 4.2 to 8.6μg/dl, occupied more than half irrespective of types of the defects. Most of calves with low thyroxin level had a history of weakness or severe retarded growth. It is suggested that cretinism of calves is also present like man and dogs.
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  • TOSHIYUKI MATSUNAGA, SHINICHI KAMATA, NORIHIDE KAKIICHI, KAZUO UCHIDA
    1992 Volume 45 Issue 10 Pages 761-765
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
    A total of 72 strains of gram-negative bacteria isolated from bovine mastitic milk on 66 dairy farms in Japan during the period from November 1988 to May 1989 were identified, and examined for their drug susceptibility and β-lactamase production.
    These strains were classified into 31 of family Enterobacteriaceae and 41 of glucose-nonfermentative bacteria (GNF). Enterobacteriaceae strains were identified as 12 species of 7 genes, and predominant species were Esherichia coli, Klebsiella pneumoniae and Enterobacter agglomerans. GNF strains were identified as 15 species of 7 genes and 2 group, and Acinetobacter lwoffi, Pseudomonas putida, Pseudomonas fluorescens, Alcaligenes faecalis, Moraxella urethralis occupied over half of the strains.
    Eighty point six% of Enterobacteriaceae and 68.3% of GNF were positive for β-lactamase production. Drug susceptibility of the strains to β-lactamase was thought to correlate with their β-lactamase productivities. Antibacterial activities of benzylpenicillin and ampicillin were affected more strongly by β-lactamase than those of cefazolin and cefoperazone.
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  • 1992 Volume 45 Issue 10 Pages 766-773
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
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  • MASANORI KOBAYASHI
    1992 Volume 45 Issue 10 Pages 775-778
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
    The effect of intermittent light stimulation (ILS) on electroencephalograms (EEG) was examined using a dog having intermittent seizures. EEG on resting state and regimen of ILS were recorded after sedation with subcutaneous injection of xylazine. The exposure time was 10 sec with a 10 sec rest time between exposures. For the dog having convulsions, normal EEG patterns were recorded during the resting time, but the photic driving response advantage was absent in the right occipital when exposed to ILS for 1 min at fixed frequency of 10 Hz. Moreover, the photo-convulsive response in EEG appeared about 5 sec after ILS.
    On the control dog, the photic-driving response advantage was noticed in the occipital regions, and an abnormal EEG that was seen in the dog with intermittent seizure did not appear, when exposed for 1 min at fixed frequencies of 8, 10, 12 and 15 Hz.
    The ILS activated EEG would be useful for diagnosis of convulsive diseases in veterinary medicine.
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  • TAKASHI OGAWA, JUNJI SUZUKI, TOSHIO OGAWA
    1992 Volume 45 Issue 10 Pages 779-782
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
    A 1-year-old, female, Shiba dog showed head tremors, staggering and depression, blindness, seizure and a coma. These signs progressed over a very short time. Serum biochemical data revealed increased ammonia, GPT and ALP, and abnormal urological findings of ammonium biurate were present. Portocaval shunt could be diagnosed tentatively and medical management with fluid therapy was carried out but no clinical improvement was observed. Portocaudalcaval shunt was diagnosed by operative portography and a 4F flexible catheter was inserted into the caudal vena cava through the shunt vessel. During operation, it was detected that the shunt vessel was branched just before the caudal vena cava. Portal vein pressure was measured during shunt vessel ligature and a total occlusion was performed because of a marked increase in the portal vein pressure was not observed. Palpation of the inserted catheter as it passed between the mesenteric and portal veins, and through the shunt identified the surgical location. Clinical improvement was generally noted within the first two days postperation and an ammonia tolerance test revealed excellent results.
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  • 1992 Volume 45 Issue 10 Pages 783-789
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
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  • KEIJI FUNATOGAWA, SATOSHI INOUE, HIROYUKI HANEISHI, TERUJI HARIGAYA
    1992 Volume 45 Issue 10 Pages 792-795
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
    Listeria monocytogenes (L. monocytogenes) resuspended in several type of milk and other solutions was heated at 60°C. Decimal reduction time (D value) was calculated from the survival curve of L. monocytogenes. These D value of survival phase of L. monocytogenes was longer than that of log phase of L. monocytogenes. And also, preheating of the solution resuspended survival phase of organisms at 48°C for an hour increased D value of L. monocytogenes, especially in the case of raw milk than the case of sterilized milk.
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  • YASUSHI MURAKAWA, YOUICHI UCHINUNO, SACHIO TOKIYOSHI, HIDEO FUJIKAWA, ...
    1992 Volume 45 Issue 10 Pages 796-798
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
    Persistence of antibodies against rabies virus was studied in house-held dogs vaccinated with an inactivated tissue culture rabies vaccine. Moreover, neutralizing antibody (NAb) titers to rabies virus were surveyed in 942 sera collected from house-held dogs in Fukuoka city during a 1986-1989 period and in 149 sera collected from retained stray dogs in Kumamoto and Miyazaki prefectures during a 1986-1987 period.
    The geometric mean NAb titers at 1, 6, and 12 months postvaccination were 1: 137.2, 1: 59.3, and 1: 26.0, respectively. All of the serum samples collected at 12 months post-vaccination retained a NAb titer level of 1: 4 or more.
    The geometric mean NAb titers in house-held dogs and retained stray dogs were 1: 18.4 and 1: 6.0, respectively. The difference in the titer was statistically significant. The rate of serum samples showing NAb titer of 1: 4 or more was 62.4% in the house-held dogs, and the rate was significantly higher than that in the retained ones (31.5%).
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  • 1992 Volume 45 Issue 10 Pages 799-806
    Published: October 20, 1992
    Released: June 17, 2011
    JOURNALS FREE ACCESS
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