Abstract
The article is devoted to the study of the influence of different modes of LED lamps color temperature in high-speed lighting conditions 2C:5T:3C:2T:3C:9T on productivity and viability, quality of the cross "Shaver" hens’ eggs. 4 modes of color temperature of radiation were tested: in the 1st group-in all periods of light 3000 K; in the 2nd group-the first and last periods of light 3000 K, the average period of light 5000 K; in the 3rd group-the first and last periods of light 5000 K, the average period of light 3000 K; group 4-the first half of each period of light 3000 K, the second half 5000 K. It was found that in groups 1, 2, 3 and 4 with high bird safety (99-100%), egg production per 1 laying hen was 148.6, 141.8, 155.5 and 140.5 pieces; egg weight-61.2, 60.9, 62.3 and 60.9 g; egg weight yield per 1 laying hen-8.99, 8.55, 9.56 and 8.47 kg; feed consumption per 1 kg of egg weight-3.31, 2.43, 2.24 and 2.40 kg. According to the complex of zootechnical indicators, the 3rd group was recognized as the best, which also surpassed other groups in absolute and relative weight of the yolk (15.04 g and 24.35% vs. 14.16-15.04 g and 23.31-24.35%), absolute weight of protein (40.50 g vs. 38.98-39.88 g) and slightly inferior in absolute and relative weight of the shell (6.73 g and 10.78% vs. 6.83-6.92 g and 11.08-11.39%).
Highlights
Light is the most important environmental factor that influences the behavior, physiological state, viability and productivity of birds [1-5]
The highest egg-laying rate for the initial and average laying hens was observed in group 3 at the color temperature of the radiation of LED lamps in the first and last periods of light was 5000 K, and in the average period of light – 3000 K–4.6-9.6% higher than in the other groups
This indicator was minimal in the 4 experimental group, where in the first half of each light period the color temperature of the radiation was 3000 K, and in the second half-5000 K-the lag from the 1 control group was 5.4%
Summary
Light is the most important environmental factor that influences the behavior, physiological state, viability and productivity of birds [1-5]. The mode, intensity, spectrum and source of illumination, as well as the color temperature of the radiation, have become the main factors of light in modern poultry farming [1, 5, 11, 12]. The evolution of animals, including birds, took place under the influence of natural light, the color temperature of which varies depending on the time of year, day and state of the atmosphere. Numerous studies have shown the dependence of the productivity and quality of poultry eggs on the spectrum and color temperature of the source [13-20]. The aim of the study was to study the viability and productivity of laying hens, the quality of food eggs under different modes of color temperature of LED lamps against the background of intermittent daylight
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