Efeito do ambiente biomicroclimático sobre o desempenho de aves de postura, um estudo realizado indoor na região de União dos Palmares, Alagoas

Abstract

This study evaluated the effects of bioclimatic environment in the creation of laying hens in sheds on growth performance and feed intake. It is true that in tropical regions, like northeast Brazil, the high temperature and humidity, especially in summer, have been shown to be factors that significantly affect production, including the quality of eggs. To identify the micro climate of sheds, we developed an experiment, conducted in a commercial chicken broiler Carnauba set, located in the União dos Palmares, Alagoas state during periods of 08 November 2008 to March 27 2009. Sampling started on November 07 2008 bioclimatic with using strain animals DEKALB WHITE, with 18 weeks of age during the dry period. We monitored and assessed thermal conditions through sensors meter of air temperature and relative humidity. These meteorological data were developed calculations and analysis of Indices of comfort for chicken s postures, UTI Index (temperature and humidity) and H (enthalpy). For productive performance, we analyzed the production and egg weight and feed intake. It was verified the need for improvements in the internal environment of the house, introducing equipment that minimizes the thermal stress that was observed mainly in the hottest hours of the day.