Effective temperature as a measure of environmental conditions for pigs

Abstract

1. Three experiments confirmed the view that losses, poor weight gains and low food consumption were always problems among pigs reared in an open pen in a large uninsulated building in comparison with the better results for pigs reared in wooden ark huts. Pigs in an ark hut with an outdoor run did better than those in one with an indoor run.2. The effective temperature of the different types of housing was estimated. The differences found were not large but the environment which produced the best pigs had the highest effective temperature.3. The provision of an insulated, dry floor to sleep on made it possible to rear good pigs in a pen where before they had failed. Woollen jackets did not provide sufficient insulation to affect the growth or health of pigs in a hut or pen.