Índices térmicos ambientais em aviários com e sem o uso de forro.

Abstract

The objective of the current study was to evaluate the environmental thermal conditions in aviaries with and without the polyethylene lining. The experiment was accomplished in two distinct periods from 1 to 42 days of age and in four aviaries of 12 m x 10 m dimensions, divided in 4 boxes with 200 birds each. Data regarding environmental variables were obtained twice a week starting from the beginning of the 4th week of age of the birds considering a schedule of data collection every 3 hours interval, during the whole day. Considering the data collected at every schedule, the external and internal thermal atmosphere from each box the Black Globe Humidity Index (BGHI) and the Radiant Thermal Charge (RTC) were determined. Following the same experimental design, the latter measurements were obtained in 3 weeks, considering 9 daytime schedule/day, twice a week. Birds comfort were observed to be better under the environmental thermal conditions in which polyethylene lining were adopted in the aviaries.