TY - JOUR ID - TI - THE EFFECT OF USING ULTRAVIOLET RAYS WITHIN THE LIGHTING SYSTEM ON PRODUCTIVE PERFORMANCE OF BROILER AU - Hadeer H. A. Al-Lami Sabah K. M. Al-hummod PY - 2022 VL - 14 IS - 4 SP - 126 EP - 136 JO - Euphrates Journal of Agricultural Science مجلة الفرات للعلوم الزراعية SN - 20723857 AB - The current study was conducted from December 20, 2021 to January 23, 2022 in Poultry houses of the Department of Animal Production at the Faculty of Agriculture, University of Basra. To study the effect of ultraviolet radiation on the productive performance of broilers. The study was divided into 35-day field experiment. In this study, 180 non-naturalized chicks and one-day-old ROSS 308 were used. Chickens are randomly assigned to five experiments, three replicates for each treatment (12 chicks per replicate). Treatment is as follows UVB lamps and wavelengths (280-320) nm were used. The birds were reared in separate sections, where each section is assigned for one treatment. The Experience is as follows; The control treatment is regular light (LED) without using UV radiation, while the T1, T2, T3 and T4 treatments use UV lamps for different periods of time (30, 60, 90 and 120 minutes/day) respectively during the 35-day trial period. The birds were fed two available diets, the first containing 23.33% crude protein and 2990 kcal/kg metabolic energy. The second diet contained growth containing 20.24% crude protein and 3119 kcal/kg metabolic energy. The results of this study showed a significant increase (P≤0.05) in body weight in birds with T2, T3 and T4 treatments at week 5, in addition to weight gain at week 4 and the cumulative T3 and T4 treatments increased significantly (P≤0.05). It also showed no significant influence of UV use on the amount of weekly and cumulative feed intake, feed conversion ratio, total mortality and production index. There is no significant effect of the use of UV radiation on carcass characteristics (cultivation percentage, relative weight of breast, thighs, back, wings and neck) and relative weight of internal organs (heart, liver, gizzard, spleen and bursa and the Fabricius gland).

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