EFFECT OF LIGHT COLOR INTERMITTENT AND CONTINUOUS LIGHTING ON PRODUCTIVE PERFORMANCE DURING GROWTH PERIOD OF LOCAL IRAQI LAYER HENS.

Abstract

This study was conducted to determine effect of light colors intermittent and continuous lighting on productive performance for local Iraqi layer hens during growth period (12-16) weeks at Poultry Research Station / Agricultural Research Department of Ministry of Agriculture - Abu Ghraib during period from 21/06/2022 to 27/02/2023. The experimental treatments were divided into 5 treatments according to lighting system followed as follows: T1: C-control solar lighting with Continuous lighting treatment  lighting system at Poultry Research Station (10 light: 14 darkness), T2: C+: solar lighting with intermittent lighting system for experiment 6 solar light: 7 darkness: 4 solar light: 7 darkness, T3: WL: white lighting with intermittent lighting system for experiment 6 white light: 7 darkness: 4 solar light: 7 darkness, T4: RL: red lighting with intermittent lighting system for experiment 6 red light: 7 darkness: 4 solar light: 7 Darkness, T5: UVR: UV lighting with intermittent lighting system for experiment 6 UV rays: 7 Darkness: 4 Solar light: 7 Darkness. Results showed a significant increase in amount of feed consumed for continuous lighting treatment, a significant increase (p≤0.05) for WL treatment at first egg weight and for UVR treatment at body weight at first egg, and a significant decrease for C- treatment at age at first egg. There were no significant differences in body weight during growth period, egg weight, and age at 50% production.