Avaliação do controle do ambiente em galpões de frangos de corte criados em alta densidade




This research had the objective to study forced ventilation systems under both the thermodynamic aspect, as well as the broiler performance grown at high flock density. The evaluation was based on the third last weeks of growth prior to slaughter. The experiments were carried out in three stages: the first one consisted in simulating the pou1try housing thermal environrnent by using reduced and distorted scale models, recording the inside environmental parameters such as dry bulb temperature (Dbt), wet bulb temperature (Wbt), black globe temperature (Bgt) and wind speed (Ws), and simulating by the use ofsoftware, the broiler growth and performance ( weight gain and mortality). The second one was based on the first stage results. With the resuhs from the first stage an adapted tunnel ventilation design was adopted and installed in a broiler commercial operation, using s flock density of 18 birdslm2, and environrnent and production data were compared with a conventional forced ventilation system and flock density of 13 birds/nr. It was found that the adapted tunnel ventilation led to better thermal comfort to the birds, resulting in higher productivity leveI per floor area. Mathematical models were buih based on the statistical analysis, representing the relation between environrnent and productivity ofbroiler production under high flock density, using the proposed adapted tunnel ventilation


frango de corte ventilação aviarios

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