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Volume 43, Issue 4
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K TANAKA, R B ATWELL1990 Volume 43 Issue 4 Pages 231-236
Published: April 20, 1990
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSDownload PDF (955K) -
OSAMU YOKOTA, TAKATOSI WATANABE, HITOSI SAINO, TOSHIHISA AOKI, YUJI MI ...1990 Volume 43 Issue 4 Pages 239-243
Published: April 20, 1990
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSThe antibody response and possibility of fetal infection were assessed in cows that had been vaccinated with a bovine viral diarrhea-mucosal disease live virus vaccine (No.12-43 strain). The seroconversion rate was examined in 92 vaccinated cows. In those cows which had antibody titer of 4 or lower at the time of vaccination, the seroconversion rate reached almost 100%, while in those with antibody titer of 8 or higher, the rate tended to be lower in the cows which showed higher antibody levels against the No.12 and Nose strains. Twenty-six antibody-negative cows were vaccinated and their antibody titers were determined two months later. The mean antibody titers (n=26) against the No.12, Nose, and KS86-1 strains were 4806.5, 1170.0, and 121.4, respectively. Rises in antibody titer were also recognized against field-isolated virus strains obtained from cattle in Hokkaido, and the mean antibody titers against three isolates were 460.2, 135.0, and 131.5. The mean antibody titer (n=6) determined one year after the vaccination was 512 against the No.12 and Nose strains, and 64 against the K (+) strain. In some cases, however, in spite of a high antibody level against the KS86-1 strain, a significant rise in antibody titer was recognized when antibody levels against the No.12 and Nose strains were low. This suggested that some field strains may greatly be different serologically from vaccine strains.
Eight antibody-negative pregnant cows were vaccinated, and all of them showed a significant rise in antibody titer after vaccination. Furthermore, antibody to the No.12 strain was detected in 5 pre-colostrol calves born to these 8 cows, suggesting fetal infection.
The present findings indicated that the live virus vaccine used in this study induced an antibody response effective enough for prevention of bovine viral diarrhea-mucosal disease, although the use for pregnant cows should be avoided.View full abstractDownload PDF (649K) -
SHUSUKE IWASAKI, YOSIYUKI GOTO, YASUO MIURA, MORIO NAGATOMO, YUJI KONO1990 Volume 43 Issue 4 Pages 244-248
Published: April 20, 1990
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSIn 1987, an outbreak of Ibaraki disease of cattle occurred in Miyazaki Prefecture, and 76 of 993 cattle raised on 75 farms showed clinical signs of fever, profuse salivation, coughing and laryngoparalysis, and 12 of affected cattle died. The Ibaraki virus was isolated from 17 of 45 blood samples collected from affected. animals. The virus neutralization (VN) test against the virus revealed that the antibody positive ratios converted from 12.8%(33/258) at the early stage of outbreak to 51.8%(169/326) at the last stage of the outbreak.
The Ibaraki virus could be isolated from 3 of 5 sentinel cattle which had been kept on 2 farms in the district. These sentinel cattle excreted the virus during a period from 1 to 2 months without showing any clinical signs. The virus was not isolated from Culicoides oxystoma or other species of Culicoides, which were suspected to be vectors of the virus, throughout the outbreak.View full abstractDownload PDF (2813K) -
TAKASHI YOKOYAMA, MICHIHARU SAKAI, AKIRA TODA, KUNIMASA MINAKAWA, YOSH ...1990 Volume 43 Issue 4 Pages 249-251
Published: April 20, 1990
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSThe haemagglutination inhibition test of Newcastle disease and the detection of antibodies against bovine leukemia and Aujeszky's disease viruses were routinely conducted in our livestock hygiene service center. Usually, a few animals were sampled from herds or flocks for these tests. The relationship between the reliability of results obtained by these tests and the number of samples tested was pursued. As a result, it was suggested that more numbers of samples should be examined increase the reliability of results in these tests.View full abstractDownload PDF (464K) -
HIROSHI AMANO, NORIKAZU KAJIO, MASATOSHI SHIBATA, MAMORU TSUCHIYA, SAC ...1990 Volume 43 Issue 4 Pages 252-257
Published: April 20, 1990
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSA disease of the female reproductive organ charcterized by mucopurulent vaginal discharge occurred among grazing cattle in Shizuoka Prefecture in 1987. The vaginal discharge appeared four to 10 days after mating and recovered naturally about one month after the onset of symptom. The morbidity rate ranged from 10% to 40% and the herd conception rate was 80%.
As a result of bacteriological examinations conducted on vaginal discharges from 10 diseased cows, Ureaplasma diversum was isolated in a pure state from all the cows and Haemophilus somnus from four cows. Vaginal swabs from 26 clinically normal mated cows gave a positive result forU.diversumin 12 of 26 cows (viable organism number:≤103), whereasU.diversumwas isolated from all the 17 diseased cows examined (viable organism number:≤105).H.somnuswas isolated from cervicovaginal mucus in 10 of 42 healthy cows and in 12 of 33 diseased cows. BothH.somnusandU.diversumwere also isolated at the rates of 5% and 30% of cervicovaginal swabs obtained from virginal cows, respectively. There was no relationship between the incidence of the disorder and the serotype groups ofU.diversum.
Based on the above-mentioned findings, it is suggested that the development of the present disease may be associated withU.diversuminfection. Etiological significance ofH.somnusremains to be solved.View full abstractDownload PDF (977K) -
TAKEO MINAMI, MAKOTO MUTO, TOSHIFUMI WATANABE, YOSHIHIRO ISHIKAWA, YOS ...1990 Volume 43 Issue 4 Pages 267-270
Published: April 20, 1990
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSMyelogram was performed for four dogs with spinal injury because the site of spinal injury and degree of spinal compression were indentified.
We used iohexol (240 mg%) which is relatively new contrast medium. We injected 0.3 ml/kg of iohexol to the cisterna magna.
It was able to find the site of spinal inury. There were no adverse reactions during and after general anesthesia. It was concluded that the myelogram with iohexol was a very safe technique because there were no adverse reactions to spinal injury cases.View full abstractDownload PDF (3872K) -
KOICHI MURATA1990 Volume 43 Issue 4 Pages 271-274
Published: April 20, 1990
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSAvian haematozoa and microfilaria were found in the blood of two adult salmon-crested cockatoos (Cacatuamoluccensis) and an adult lesser sulphur-crested cockatoo (C.sulphurea) newly imported to Kobe Oji Zoo. Gametocytes observed in the blood cells of C. moluccensis were banana-shaped or amoeboid and extended along the host cell nucleus. A few schizonts and numerous trophozoites were also found. Gametocytes appeared inC.sulphureaextended around the host cell nucleus. The cytoplasm of this organism stained pale blue and contained pigment granules which were randomly distributed. The former haematozoa was identified asPlasmodiumsp. and the latter as Haemoproteus sp., probablyH.handaiaccording to their morphological aspects. Microfilarias had rounded anterior ends with straight tails and many dark purple stained nuclei. Two times of intramuscular injection of Ivermectin (1450, μg/kg/time) gave desirable effects on the treatment of microfilaria. A compound, consisting of pyrimethamine and sulfadoxine at a dosage of 12 mg/kg/day and 245 mg/kg/day, respectively, was given orally for three days, but the effect of these compounds onPlasmodiuminfection was not determined. A small amount of blood obtained from these psittacine birds was inoculated intramusculary or intravenously to a budgerigar and two domestic pigeons. As a result, neither clinical signs developed nor haematozoa were observed in the erythrocytes of inoculated birds. Microfilarias, however, were found up to 12 months after inoculation in the peripheral circulation of a domestic pigeon which had been inoculated intravenously, suggesting viability of microfirarias at least in this term.View full abstractDownload PDF (5426K) -
NAOYUKI ITOH, SAYAKO ITOH1990 Volume 43 Issue 4 Pages 275-276
Published: April 20, 1990
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSBabesiagibsoni (B.gibsoni) parasitism was recognized in a one-month-old puppy, which was born from a dog withB.gibsoniinfection. It was suspected that the case was infected by transplacental transmission because of its background. This case suggested that the transplacental transmission may be one of the infectious routes in natural infection withB.gibsoni.View full abstractDownload PDF (2594K) -
RYUJI ASANO, SHIGEO HOKARI, EIJI MURASUGI, HIROMI SHIMIZU, SHIGERU KUW ...1990 Volume 43 Issue 4 Pages 285-288
Published: April 20, 1990
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSTo obtain the basic data on the route ofCryptosporidiumsp. infection as zoonosis, we examined feces from 295 dogs, 32 cats, 19 other animals and 259 persons including 3 cases with the acquired immunodeficiency syndrome and 46 cases with malignant tumor.Cryptosporidiumsp. oocysts were detected in one of 295 dogs (0.3%) and one of 32 cats (3.1%) but none of the other specimens. Since the detection rates ofCryptosporidiumsp. oocysts in the dogs and cats were very low, the possibility that the human infection is acquired from dogs or cats seemed to be low. Considering an increase in the number of people keeping pets, an increase in the number of patients with the acquired immunodeficiency syndrome and no effective method of prevention or treatment for cryptosporidiosis, however, the presence ofCryptosporidiumsp. oocysts in a low frequency in both dog and cat suggests that attention should be paid to a possible association between pets and human cryptosporidiosis.View full abstractDownload PDF (3419K) -
TSUTAE KASHIMA, HIROSHI SAWAYA, AKITSUGU MIYASHIRO, KIYOSHI OHTSUKA, Y ...1990 Volume 43 Issue 4 Pages 289-292
Published: April 20, 1990
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSSeven alimentary tract lymphosarcomas in slaughtered pigs were examined pathologically. Large tumour masses were found in the small intestines (7 cases) and the jejunal lymph nodes (7 cases). There were disseminated tumour nodules on the serosal surface of the omentum majus (6 cases), large intestine (5 cases), liver (7 cases) and spleen (7 cases). In the center of large tumours locating in small intestine normal architectures were completely destroyed by the neoplastic growth. Peyer's patches were replaced by tumour cell proliferation even at the peripheral portion of intestinal tumours. Accumulation of tumour cells was predominant in the submucosa. Tumour cell proliferations were also noted on the serosal surface of the large intestine, liver and spleen, but not in the parenchyma of these organs. Two cases of this series could be classified as follicular lymphoma.
From the findings of these seven cases, seeding on the serosal surface of the abdominal organs and a follicular proliferation pattern were supposed to be characteristics of alimentary tract lymphosarcomas in pigs. This anatomical type of swine lymphosarcomas may not be rare as has been believed.View full abstractDownload PDF (1684K)
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