Clinical Evaluation of Growth Hormone Secretion in Cattle Using Insulin Tolerance Test

Journal of Veterinary Medical Science

Seiichi KAWAMURA¹  Fumio HOSHI¹  Hiromichi OHTSUKA¹  Masafumi OGURO¹  Hirotaka ISHIKAWA¹ 

[1] Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Science, Kitasato University

关键词: bovine growth hormone;    cattle;    insulin tolerance test;   

DOI  :  10.1292/jvms.65.809

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(18)Growth hormone secretion was evaluated in cattle. Clinically healthy bovine growth hormone (bGH) concentrations were 10.7 ± 1.6 ng/ml in Holstein and 7.8 ± 3.9 ng/ml in Japanese black cattle. The bGH concentration alternated at three-hour intervals, and tended to be higher at midnight and lower in the morning and before feeding. Insulin tolerance test (ITT) at an insulin dosage of 0.25 U/kg showed a significant increase of bGH concentration to 331 ± 153% at 60 to 90 min after injection. In ITT applied to five under-growth calves of Japanese black cattle, the basal bGH concentrations were lower and peak values after insulin injection were shown to be significantly low. The ITT is useful for the clinical examination of bGH secretion in cattle.

【 授权许可】

Unknown