Seasonal Patterns in Growth Hormone, Insulin and Insulin-like Growth Factor-1 in Female Muskoxen

  • Jan Z. Adamczewski
  • Susan C. Tedesco
  • Bernhard Laarveld
  • Peter F. Flood
Keywords: Ovibos moschatus, nutrition, weight, muskoxen, hormones

Abstract

Over a year, mean serum growth hormone concentrations ranged from 0.5 to 3 ng/ml in tame muskoxen with the lowest values and fewest pulses between October and January. Serum insulin ranged from 0.25 to 0.92 ng/ml, with minima in summer. There were marked seasonal changes in serum insulin-like growth factor-1 in both tame and wild muskoxen but the late summer peak was higher and more distinct in the tame animals with levels reaching 160-250 ng/ml in September.
Published
1997-02-01
How to Cite
AdamczewskiJ. Z., TedescoS. C., LaarveldB., & FloodP. F. (1997). Seasonal Patterns in Growth Hormone, Insulin and Insulin-like Growth Factor-1 in Female Muskoxen. Rangifer, 17(3), 131-134. https://doi.org/10.7557/2.17.3.1364
Section
Brief communications