The production of water vapours and heat by layers in conventional cages
2002
Para, L. | Ondrasovic, M. | Ondrasovicova, O. | Vargova, M. | Kocisova, A. (University of Veterinary Medicine, Kosice (Slovak Republic))
Production of water vapours and heat was investigated in a conventional house for layers with four deck cages and capacity for 17 000 birds. The respective values were calculated on the basis of temperature and relative humidity outside and inside the house over a 10-day period. The external temperature ranged from 6.0 to 25 degree C and relative humidity from 46 to 90%. The internal values of temperature and relative humidity varied between 11.0 and 25 degree C and 54 and 80%, resp. The calculated production of water vapour during 1 hour intervals ranged from 3.48 to 4.35 g/h/kg and the total mean was 3.91 g/h/kg. Production of heat in the same intervals varied within 2.66-8.74 W/h/kg with daily means ranging between 5.32 and 8.74 W/h/kg and total mean reaching 5.78 W/h/kg
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