By R. Mauget (auth.), W. Sybesma (eds.)
Read or Download The Welfare of Pigs: A Seminar in the EEC Programme of Coordination of Research on Animal Welfare held in Brussels, November 25–26, 1980 PDF
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Additional info for The Welfare of Pigs: A Seminar in the EEC Programme of Coordination of Research on Animal Welfare held in Brussels, November 25–26, 1980
Example text
The temper- ature of the room in which the feeding cage was housed was either 10, 25 or 35 0 e and the animals were left until the switch was no longer operated. Under these conditions food intake was reduced at 35 0 e by comparison with 25 0 e, but at 100e there was no change. In a second series of studies the pigs were exposed in the cage to 10, 25 or 35 0 e for 2 or 4 h before the switch was made available. Food intake was then increased at looe, but had almost returned to normal at 35 0 e. Similarly it was found that after several days exposure to 10 or 35 0 e after a period of 25 0 e food intake was increased at 100e, but at 35 0 e it was hardly affected.
Compo Biochem. Physiol. 50, 71-76. L. , 1970a. The thermoregulatory behaviour of young pigs in a natural environment. Physiol. Behav. L. , 1970b. ~, 981-987. Variations in deep body temperature in the young unrestrained pig over the 24 h period. J. , Lond. 210, 989-998. L. , 1974. Effects of environmental temperature on food intake in growing pigs. Compo Biochem. Physiol. 48, 573-581. L. , 1973. The effects of food intake and fasting on 24 h variations in body temperature in the young pig. Pflugers.
Was it a very barren environ- ment or was there straw? D. L. Ingram (UK) The animals were kept in cages on wire mesh. If one wants to look at the effects of environment, then providing straw or allowing two animals to get together destroys the object of the exercise. G. van Putten So, it was a very barren environment. (,'vetherZ-ands) You stated that animals kept in a rich environment have lower temperature demands and wind velocity is not so important. However, in the experiments of Dr. Baldwin, the animals were kept in a very poor environment and yet you refer to these experiments as valid.