LED de diferentes cores como alternativa sustentável para iluminação de poedeiras comerciais

Abstract

The reproductive performance of laying hens is highly dependent on adequate control of light and its effects have been the subject of important studies carried out on reproductive performance. The research was divided into two stages (first and second cycle) with the objectives: Experiment 1 - evaluate the effects of replacing incandescent light bulbs with LED of different colors, the lighting of laying hens in the first laying cycle on production indices and and quality of eggs; experiment 2 - to evaluate the influence of different colors of LED in lighting laying hens in the second laying cycle on production indices and egg quality. For the first experiment were used 360 laying hens with 56 weeks of age, divided into 24 treatments (blue LED, yellow LED, green LED, white LED, red LED and incandescent light bulb, and 4 periods), with 3 replicates of 20 birds in a completely randomized design with a split plot. The results showed that there was increased production of eggs/day (%) (p <0.05) when hens were subjected to illumination with red LED, white LED and incandescent light bulb. The other indices evaluated were not affected (p> 0.05) by type or color of light. In the second experiment, we used 300 laying hens, aged 91 weeks (second laying cycle). We adopted the latin square design with 5 treatments: blue LED, yellow LED, red LED, white LED and green LED (5 periods and in, 5 boxes). The indexes of production and egg quality did not suffer any influences (p> 0.05) between the measured colors.