Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Estimated energetic costs of short-term change in Tb during ad libitum feeding (A), fasting (F) and re-feeding (R) as calculated from the heat capacity equation. The metabolic costs associated with the periodic rises in Tb were typically higher in cold-acclimated ducklings, but declined more profoundly during fasting. The metabolic costs are not insubstantial; when expressed as a portion of basal metabolic rate [30] are between 7 and 11%.
