Test of the Factor Stimulating Growth-Hormone Release and Analysis of 10-hour Hormone Secretion in Japanese Black Cattle with Normal and with Retarded Growth
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Accession number;04A0231713
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| Title;Test of the Factor Stimulating Growth-Hormone Release and Analysis of 10-hour Hormone Secretion in Japanese Black Cattle with Normal and with Retarded Growth |
| Author;
TAKASU MASAKI
(Gifu Univ., Faculty of Agriculture, JPN)
OBA YASUNORI
(Gifu Univ., Faculty of Agriculture, JPN)
ITO TETSURO
(Gifu Univ., Faculty of Agriculture, JPN)
HOSODA IWAI
(Gifu Univ., Faculty of Agriculture, JPN)
KATO KAZUO
(Tohoku Univ., Graduate School of Agricultural Sci., JPN)
KITO KATSUYA
(Gifu Univ., Faculty of Agriculture, JPN)
KITAGAWA HITOSHI
(Gifu Univ., Faculty of Agriculture, JPN)
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Journal Title;Journal of the Japan Veterinary Medical Association
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Journal Code:Y0220A
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ISSN:0446-6454
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VOL.57;NO.3;PAGE.175-179(2004)
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| Figure&Table&Reference;FIG.3, TBL.4, REF.11 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;To examine growth-hormone (GH) secretion, we conducted two tests: a test of the factor stimulating growth-hormone (GRF) release and analysis of 10-hour GH secretion. In normal cattle, plasma GH concentration increased rapidly after stimulation with the GRF then decreased. But, in some cattle, concentration curves separated into 2 peaks. Some cattle with retarded growth showed high concentrations of plasma GH, whereas others demonstrated little or no response. In normal cattle, plasma-concentration curves manifested large individual differences. Analysis of 10-hour GH secretion showed that, in normal cattle, GH varied in a pulse-like fashion and was less than 10ng/ml. Baseline concentrations, peak amplitudes, and areas under the plasma concentration curve (0-10 hours) were lower in cattle with retarded growth than in normal cattle. These results show that 10-hour GH secretion analysis is useful for the kinetic study of GH secretion in Japanese Black cattle. (author abst.) |
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