Abstract
This study was conducted to find the better lighting technique on the light length and the color of light for the laying term. Three hundred and sixty 35-day-old female quail were divided into 6 groups, and reared for 20 weeks in apparatuses with facility to control lighting conditions. Six experimental conditions were shown by a combination of hours/day of lighting and colors (red and incandescent) as 16-R, 16-I, 18-R, 18-I, 20-R, and 20-I. Until the starts of the experiment, quail were reared at the condition of 24-I. R electric lamps, which radiate the red light from 600 to 800 mμ of wave length, and incandescent lamps, which radiate the incandescent light from 400 to 800 mμ of wave length, were used. This experiment was repeated 3 times with the same conditions. A variance analysis was used for the analysis of data obtained. The results were as follows;
1) Sexual maturity of quail was accelerated with lengthening of light length from 16L to 20L, and it was hastended by red light.
2) In the case of incandescent light, egg production rate became higher with lengthening of light length. In the case of red light, the rate increased by prolongation of lightening from 16L to 18L. But no further increase was observed by further prolongation.
3) The response of feed efficiency by light length and light color was resemble closely to that of sexual maturity by each factor.
