Abstract
This experiment was designed to determine the influence of various white light intensities on spermatogenesis, hematology and growth performance of male quail. A total of 80 birds of one day aged had been assigned to four equal groups: G1 control group was kept under natural light program 12h light:12h dark. G2, G3, G4 were exposed to artificial white light emitting diodes at 0.6, 45 and 25 Lux for 5 hours daily for 8 weeks starting at 14 days of age. The result showed that the application of Lux 0.6, 45 and 25 caused a significant increase in heart weight relative to control. Lux 0.6 led to decrease in total body weight, left testis weight and foam weight. The result revealed that exposure to 0.6 Lux caused significant decrease in sperm count and live sperm percentage and increase in dead sperm percentage. Program of 25 Lux generated a significant increase in RBC counts compared to 0.6 Lux. Exposure to 45 Lux and 25 Lux triggers a significant increase in PCV and hemoglobin concentrations. Exposures to 0.6 Lux and 25 Lux resulted in a significant increase in mean corpuscular hemoglobin concentration, while apply to program 0.6 Lux cause increase in stress index. The best feed conversion ratio was detected in normal daylight, 0.6 Lux and 25 Lux respectively. In conclusion, exposure of male quails to different intensities of white LED bulb had an effect on the some physiological and reproductive parameters.
Highlights
Many physiological functions are affected by light, which is a vital part of the physical environment [1]
This experiment was designed to determine the influence of various white light intensities on spermatogenesis, hematology and growth performance of male quail
Light is consisting of three different aspects: intensity, photoperiod and wavelength, so both photoperiod and light intensity are essential environmental factors, light intensity, color and photoperiodic regime will influence the functioning of broiler chickens [3]
Summary
Many physiological functions are affected by light, which is a vital part of the physical environment [1]. Light could be affected quail development, physiological efficiency, reproduction and behavior [2]. Artificial lighting was widely used to improve production and reproductive performance [5]. Natural or artificial light has been one of the environment factors which affect the growth, reproduction and welfare of poultry by modulating different bird behaviors and physiological functions [6]. Poultry has vision-sensitive retinal photoreceptors, while non-visual (extra-retinal) photoreceptors are able to detect and adapting photoperiods to the environment [7]. The lighting is a main factor in bird development, whose function is to stimulate the development of the bird's reproductive system and locomotive activity to higher food and water intakes [12]
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