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Volume 42, Issue 8
Displaying 1-9 of 9 articles from this issue
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HIROSHI SENTSUI1989 Volume 42 Issue 8 Pages 523-529
Published: August 20, 1989
Released on J-STAGE: June 17, 2011
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SATOSHI OSAME, SHIGERU ICHIJO, TAKUO MIYAKE1989 Volume 42 Issue 8 Pages 531-536
Published: August 20, 1989
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSTwenty-four Aberdeen Angus and 12 Hereford calves, four to 116 days of age, were examined. These calves were kept together in four farms where white muscle disease of the cardiac type had been identified. Serum enzyme activities (GOT, GPT, CPK, LDH) in many calves increased, especially CPK over 100 IU in 50% of calves and LDH over 2, 500 WU in 47% of calves with increases of LDH1 and LDH2. Electrocardiograms showed sinus tachycardia, an elevated ST segment and a high T-wave, and a windening of the interval of each wave. Serum tocopherol, selenium and blood glutathione peroxidase were at deficient levels. After injection of tocopherol and selenium, serum LDH1 and LDH2 decreased to normal levels.
Consequently, cardiomyopathy of calves kept together in farms with white muscle disease of cardiac type was also thought to be caused by the deficiencies of tocopherol and selenium, and it was suggested that the outbreak of this disease was relevant to the breed of cattle.View full abstractDownload PDF (2247K) -
TADAAKI SHIRAISHI, FUMIO HARA, YUKIO OKADA, TADASHI TAKUWA, SHINOBU FU ...1989 Volume 42 Issue 8 Pages 537-541
Published: August 20, 1989
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSAntibodies against swine (H1N1) and Hong Kong (H3N2) types of influenza virus were surveyed in 5, 022 pigs raised in Shimane Prefecture in Japan during the seven years period. from 1978 to 1985. Hemagglutination inhibition (HI) antibody titers of 40 or higher measured by micro-titer technique were considered as positive antibody against the virus.
Positive rates of antibody against A/SW/Shimane/1/78 (H1N1) were 36.7-69.6% in each year observed. There was no significant difference in antibodypositive rates measured at various seasons throughout the year. However, a marked difference in antibodypositive rates could be revealed among the farms observed. The number of pigs bearing antibody against the Hong Kong type of virus (A/Shimane/1/80 (H3N2)) increased after 1980 and gradually decreased after reaching a high level of 54.4% in 1983. There was no correlation between incidence of swine and Hong Kong types of influenza virus infection; however, dual infection with the two types of the virus in pigs was suggested by serological surveillance.View full abstractDownload PDF (667K) -
AKIHIRO NORO, KAZUYUKI MINATO, KAZUO MATSUMURA, MASAHIRO TAKAHASHI, MU ...1989 Volume 42 Issue 8 Pages 545-548
Published: August 20, 1989
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSA clinico-biochemical study was undertaken in cows with low fat milk and control cows reared in an open field to investigate the effect of a change in roughage. No significant differences were demonstrated in the hematological parameter between the low-fat milk cows and control cows. The serum concentration of free fatty acids increased in the lowfat milk cows when the roughage was changed. Examination of the rumen revealed no differences in the pH level or protozoal count between the two groups. Throughout the course of this investigation, the production of VFA and the acetic acid-propionic acid ratio were reduced in the low-fat milk cows. On examining the composition of fatty acidsin raw milk, the content of short-chain saturated acid was reduced in the low-fat milk compared with the control milk.
These results seemed to indicate that the decreased cotent of short-chain saturated acids in milk fat due to the decreases in the ruminal VFA production and acetic acid/propionic acid ratio was responsible for the low fat milk examined in this study.View full abstractDownload PDF (493K) -
MASAHIRO NODA, HIDEYUKI YAMASHITA, KIYOSHI MIURA, KEIZOU YAMANAKA, MAS ...1989 Volume 42 Issue 8 Pages 549-555
Published: August 20, 1989
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSIn 1986, 1987 and 1988, from June to November of each year, 108, 125 and 60 sentinel cattle respectively were located in various parts of Hiroshima Prefecture, Japan, and utilized to isolate arboviruses, such as bovine ephemeral fever virus and Chuzan virus. Four strains of a virus, one in 1986, two in 1987 and one in 1988, were isolated in HmLu-l cell culture, derived from baby hamster lung, from the blood specimens of cattle which showed slight fever and leukopenia. All the isolates were sensitive to ether, chloroform and deoxycholate, labile at pH 3.0 but stable at pH 7.4 and 8.0. They passed readily through membrane filter of 450 and 200 nm pore size, passed through 100 nm filters with some titer loss, but did not through 50 nm filters. Replication of the isolate was not inhibited by 5-iode-2-deoxyuridine. The bullet-shaped virus particles were observed in the preparations from the isolate by electron microscopy. The isolates were serologically indistinguishable from one another and showed cross reaction with Fukuoka virus, a member of the family Rhabdoviridae, which was previously isolated from biting midges and mosquitoes in Japan. All these findings support the identification of the isolates as Fukuoka virus. Neutralizing antibody incidences to the virus were observed in five of the 14 sentinel cattle herds, showing positive rates of 16.7-69.2%, in June 1987, and in 10 of the herds, showing positive rates of 9.1-76.9%, in November 1987. neutralizing antibody to the virus in bovine sera collected in various parts of Hiroshima Prefecture, Japan in 1983 and 1987 indicated positive rates of 8.4 and 28.9%, respectively. The etiological significance of the virus in the bovine disease remains to be investigated.View full abstractDownload PDF (5451K) -
SHINTARO OHTANI, KIYOSHI OKUDA1989 Volume 42 Issue 8 Pages 557-563
Published: August 20, 1989
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSThirty-three farmers selected randomly were questioned on their dairy management in April, 1988. The relationship between the each answer to the questions and their improvement data of dairy herd in 1987 was studied statistically to investigate the influence of factors of dairy management on reproductive performance.
This study showed that knowledge of estrous signs might be indispensable in obtaining high reproductive performance, and that the farmers who had enough knowledge of dairy management and managed actively and carefully, were able to attain good reproductive performance.View full abstractDownload PDF (796K) -
TOSHIKO HANAWA, NORIYUKI OKITA1989 Volume 42 Issue 8 Pages 565-567
Published: August 20, 1989
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSA total of 321, 237 cattle were slaughtered at an abattoir during the last six years. Two of 81 tumors that were found among them were odontogenic tumors. One occurred on the left maxilla adjacent to the molars and measured approximately 7cm×17cm. The other occurred in the right incisor region of the mandible and was about 5 cm in diameter. Histopathologically, the former was diagnosed as an ameloblastic odontoma and the other as an adamantinoma.View full abstractDownload PDF (6397K) -
TAKASHI OGAWA, SATOKO MATSUNO, TETSUJI OKAWA, TOSHIO OGAWA1989 Volume 42 Issue 8 Pages 569-571
Published: August 20, 1989
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSA dog diagnosed as having Cushing's disease was treated by daily administration of o, p'-DDD, No anticipated therapeutic efficacy could be obtained, and side effects, including an elevation of serum K level, developed. CT scan revealed hypertrophic right adrenal gland, which was thus excised. Subsequent intermittent administration of o, p'-DDD achieved good therapeutic results.View full abstractDownload PDF (5767K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...1989 Volume 42 Issue 8 Pages 573-582
Published: August 20, 1989
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSDownload PDF (31918K)
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