CARVALHO, Valcimar F. de.; YANAGI JUNIOR, Tadayuki.; DAMASCENO, Flávio A.; MORAIS, Sandra R. P.; YANAGI, Silvia N. M.
Résumé:
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
