Estimativa do conforto térmico em aviário de frango de corte usando termografia infravermelha

Abstract

This study was conducted to evaluate different colors used in sealing systems, to estimate the optimal temperature in commercial breeding of broilers in relation to welfare, ambience systems. Two aviaries were studied in the region of Rio Claro, SP, and an aviary color blue curtain and other curtain white, both with negative pressure. Temperatures were obtained with the aid of thermal imager in four stages of the broilers. The images were evaluated using the Text IRSoft ® software. For comparisons between poultry was applied Student's t- test to the data of registered environment with confidence level of 95 %, when distribution was normal . The highest temperatures recorded in the first week were on average 32.5 ° C in Aviary with blue curtain and 33.2 in aviary with white curtain. From the second week, the air temperature ranged between 30.5 and 27.4 ° C. There was a significant difference in the temperatures recorded with the color of the curtain used in sealing the aviaries between the phases of creation and the interaction between these factors. The white curtain resulted in lower average temperature and the initial phase showed higher mean temperature in both aviaries. The highest temperatures were recorded at baseline, due to higher temperatures in the external environment or the fact that the initial phase is considered metabolically heating phase of the birds. It was concluded that the application of thermal analysis technique is suitable and recommended for determining the temperature in aviaries, in order to evaluate the thermal comfort of the birds without compromising routine animal.