Sistemas de aquecimento automáticos na produção de frangos de corte

Abstract

The general aim of this research was to study the effects of different heating systems on the bioeconomic development of broilers from day 1 to day 45. The experiment was carried out during the winter of 2005, in commercial broiler houses located in western Paraná. The research was developed in a 1200 m2 broiler houses, with male broilers, from three different breedings, in the period between birth and slaughter on day 45, for each analyzed treatment. The adopted treatments for the economic evaluation of the different heating systems were automatic wood-burning system and automatic infrared gas system. The economic evaluation was made analyzing the energy consumption by the heaters in each treatment the gas the wood-burning through the bioeconomic index and the gross margin. The zootechnical indexes, which were evaluated, were the average weight gain and the feed consumption. The statistical data evaluation was by a randomized block in a factorial 2 X 3 model, two heating systems (automatic wood-burning and automatic infrared gas systems), three breedings broilers (A, B, C), made up by six treatments and six repetitions, totaling thirty-six broiler houses with thirteen thousand three hundred (13.300) birds each. The averages were analyzed by the Tukey test. For the general analyses of the results the Software Statistic® was utilized. The results showed that, in relation to energy consumption, the wood-burning system presented a higher energy consumption due to the lower heating power of wood, compared to the infrared gas system. Although the gas system has exhibited a higher production cost, it is still being used by the business owners. There was not a significant difference for the gross margin values and the bioeconomic index worked out for the different treatments.