The Minimum Base Value of Heat Production in Animals

Publisher Website
Google Scholar
Abstract
The authors'' idea that there is an energy expense for utilization of the body tissue nutrients as katabolized, which implies that the base value of heat production is less than that of fast, was further amplified. The energy expense of utilization of the body nutrients katabolized during fast was estimated as the increase in heat production following the feeding of oleo oil and dried beef muscle (to represent the body nutrients katabolized during fast) to steers established in approximate energy equilibrium; and the net energy of the body nutrient katabolized (the heat production of fast minus the energy expense of utilization of the fasting nutrients) was considered to represent the theoretical minimum base value of heat production. The energy expense of utilization of body nutrients katabolized was thus estimated as 14.4 cal. per kg of live wt. during fast and equal time standing and lying, or as 12.6 cal. per kg during fast in the lying position alone, or as 26.5% of the metabolizable energy of the oleo oil and dried beef muscle fed.