WINTER ENERGY-REQUIREMENTS OF BLUE GROUSE

Academic Article

Abstract

  • We measured the effects of temperature (Ta) on the metabolic rate of 6 blue grouse (Dendragapus obscurus) during winter with indirect respiration calorimetry. The standard metabolic rate was 0.812 L O2∙(kg0.734)−1∙h−1 and was 24% higher than that predicted allometrically. The lower critical temperature (Tlc) of fasted grouse was −5 °C; metabolism increased linearly below −5 °C. The heat increment associated with a Douglas-fir (Pseudotsuga menziesii) diet lowered the Tlc by 5 °C From −5 to −20 °C, the metabolism of fasted and fed grouse increased by 30 and 12%, respectively. A positive winter energy balance was predicted for blue grouse from estimates of the field metabolic rate and the consumption and assimilation rates of a Douglas-fir diet.
  • Authors

  • Pekins, Peter
  • GESSAMAN, JA
  • LINDZEY, FG
  • Status

    Publication Date

  • January 1992
  • Has Subject Area

    Published In

    Keywords

  • Nutrition
  • Digital Object Identifier (doi)

    Start Page

  • 22
  • End Page

  • 24
  • Volume

  • 70
  • Issue

  • 1