Calculation of Sensible Heat and Moisture Loss from Housed Cattle Using a Heat Balance Model

摘要

The objective has been to design a more realistic method to calculate the heat and moisture exchanges between an animal and its environment. The model is based on a mathematical model of the heat balance of the animal. It is designed to be conceptually simple, but based on basic physiological and physical principles. The control of body temperature in the animal is achieved through three different types of regulation mechanisms; metabolic heat production, sensible heat loss and latent heat loss (evaporation). In the heat balance model the homeotermic temperature range is divided into three temperature zones where each of the mechanisms is assumed to dominate.