Artificial lighting is one of the most powerful management
tools available to commercial layer producers. Artificial light allows
anticipating or delaying the beginning of lay, improving egg production,
and optimizing feed efficiency. This study aimed at comparing the
performance of commercial layers submitted to lighting using different
LED colors or conventional incandescent lamps. The study was carried
out in a layer house divided in isolated environments in order to prevent
any influenced from the neighboring treatments. In total, 360 Isa Brown
layers, with an initial age of 56 weeks, were used. The following light
sources were used: blue LED, yellow LED, green LED, red LED, white LED,
and 40W incandescent light. Birds in all treatment were submitted to
a 17-h continuous lighting program, and were fed a corn and soybean
meal-based diet. A completely randomized experimental design with
subplots was applied, with 24 treatments (six light sources and four
periods) of three replicates. Egg production (%) was significantly
different (p0.05) by light source. It was
concluded that the replacement of incandescent light bulbs by white
and red LEDs does not cause any negative effect on the egg production
of commercial layers