Utilização de lâmpadas LED’s em diferentes intensidades e cores na produção de frangos de corte

Abstract

The objective was to evaluate the effect of different colors of LED lamps and different light intensities on the growth performance variables of broilers. The experiment was carried out from August 2 to September 13, 2013. We used 672 male broiler chicks, Cobb-500 strain, a day old, vaccinated against Gumboro disease, Newcastle and infectious bronchitis and housed density of 14 birds / m². The rearing period was 42 days. LED lamps were used (Light-Emitting Diode) in green and blue colors, providing the luminous intensities of 7, 14, 21 and 28 lux. A completely randomized design in a 4x2, consisting of eight treatments with four replications was used. Weekly were measured the body weight gains, feed intake and feed conversion. Data were tabulated and then subjected to analysis of variance (ANOVA), and the results obtained, when significant, were submitted to Tukey test for comparison of means at 5% significance level. These statistical procedures were performed with the SAS statistical program. It is concluded that the effects of the use of blue and green LED lamps in different light intensities varied with age of the poultry production. The greatest effect of the interaction between lamp color and intensity occurred after 28 days of age. The use of green color lights in step 35 days of age and blue lights in the phase of 42 days, both at high intensities (21 and 28 lux) showed the best indicators of production feed, feed consumption and weight gain of broilers.