Comportamento do índice ambiental de produtividade para frangos para corte (IAPfc) no interior de galpões climatizados.

Abstract

The goal this work is to simulate the loss productivity percentages of broiler chickens grown in acclimatized housings as a function of the factorial combination of dry-bulb temperature (tdb) (30 e 35ºC), relative humidity (RH) (45 e 65%), air velocity (V) (0,3, 1,2 e 2,1 m s-1), evaporative cooling efficiency (CE) (40, 60 e 80%) and loading density (LD) (14, 16 e 18 broilers m-2). Production losses throughout the housing were determined by the environmental productivity index for broiler chickens (EPIbc), having as input data, the tdb and RH values inside of the housing simulated by a heat and mass transfer model, in addition to the Vs adopted in the simulations. In general, the benefic effect of the combination of high values of V and CE were verified into the housing internal thermal environment, while the increase of LD and RH moderately increases the losses productivity into the broiler housing