Very cool white LED light improves reproductive performance and up-regulates expression of reproductive genes in layers

This study was carried out to evaluate the effect of light color temperature on reproductive performance and expression pattern GnRH-1 FSH β genes in layers. At lay, 165 Fayoumi healthy pullets were separated into well ventilated, environmentally controlled rooms. Birds allocated three groups with 55 birds each (5 males 50 females) till 3 months after laying, representing base generation (F0). Fertile eggs collected incubated, newly hatched chicks also divided from first day life (F1). In two generations, group exposed cool white LED (day light) (6500 kelvin); second very (sky blue (10000 third warm (yellow (2700 kelvin). The profiles serum level evaluated generations. Blue light-exposed exhibited better performance, higher up-regulation increased levels than those either or yellow colors. A comparison between F0 F1 revealed an improved profile for birds. It therefore appears that could improve status laying chickens.