Color Temperature of Led Light-Emitting Diodes Lighting Devices and Productivity of Laying Hens

Gladin, Dmitry; Kavtarashvili, Alexey

doi:10.1051/e3sconf/202124701039

Cited by 2 publications

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References 11 publications

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“…Light is one of the main exogenous regulators of the physiological state, growth, development, behavior, and productivity of poultry [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Effect of smooth switching the light on/off under intermittent LED lighting on the productivity of laying hens

Gladin

Kavtarashvili

2022

BIO Web Conf.

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The influence of smooth switching the light on/off on the productivity and viability of laying hens of the SP-789 cross was studied. In the experiments, three identical groups of 120-day-old birds were formed. In the first preliminary experiment, poultry was raised up to 410 days of age, in the second main experiment it was raised up to 350 days of age. All birds were kept in cage batteries under intermittent LED lighting. The light was turned on at 2-3 am, 8-12 am, and 2-5 pm. In both experiments, lights were switched on and off instantaneously in the control group. In the first preliminary experiment, the sunrise and sunset imitations took place each time the light was switched on and off, and lasted 3 minutes in the experimental group No.1 and 6 minutes in the experimental group No. 2. In the second main experiment, in the experimental group No.1 the mode of imitation of sunrise and sunset was similar to that of the experimental group No. 1 of the first preliminary experiment. In the experimental group No. 2, sunrise was simulated only during the first light turn on, and sunset was simulated during the last light turn off (3 min). The best results were obtained in the group with smooth switching the light on at the beginning of the first photoperiod and smooth switching the light off at the end of the last photoperiod (for 3 min). As compared with control, this group showed an increased livestock livability (91.7%) by 1.9%, egg production (171.6 eggs) and yield of egg weight (9.81 kg) per initial and average laying hen by 7.3% and 6.5%. Feed efficiency per 10 eggs (1.33 kg) and 1 kg of egg weight (2.32 kg) decreased by 5.0% and 4.5% respectively.

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“…Light is one of the main exogenous regulators of the physiological state, growth, development, behavior, and productivity of poultry [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…They are characterized by low power consumption [13], the possibility of providing local lighting of poultry, low maintenance costs [14]. The high efficiency of LED lighting sources in keeping laying hens is shown in numerous studies [6,15,16].…”

Section: Introductionmentioning

confidence: 99%

Effect of smooth switching the light on/off under intermittent LED lighting on the productivity of laying hens

Gladin

Kavtarashvili

2022

BIO Web Conf.

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The influence of the duration of the “subjective day” under intermittent LED lighting on the daily rhythm of oviposition and the productivity of hens

Kavtarashvili

Гладин

2021

IOP Conf. Ser.: Earth Environ. Sci.

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Lighting is the key factor affecting oviposition time. The oviposition time is directly related to ovulation, which occurs 5 hours after reaching the peak concentration of luteinizing hormone in the blood, which depends on the lighting regime. This paper studies the impact of the “subjective day” duration under intermittent LED lighting on the daily rhythm of oviposition and the productivity of hens of the productive flocks of cross SP-789. The “subjective day” lasted 16 hours per day for group 1, 15 h for group 2, 14 h for group 3 and 13 h for group 4. It was established that the shorter the duration of the “subjective day”, the earlier the hens begin and finish laying. So, in groups 1, 2, 3, and 4, hens began laying eggs at 4 a.m., 3 a.m., 2 a.m., and 1 a.m. and ended at 6 p.m., 4 p.m., 4 p.m., and 3 p.m. with an average time of laying eggs of 8.67; 7.36; 5.36 and 5.27 h, respectively. In groups 1, 2, 3, and 4 the livability of hens, weight of eggs, egg production and yield of egg weight per the initial laying hen, feed consumption for 10 eggs and 1 kg of egg weight were 98.0, 97.0, 99.0, 99.0%; 60.0, 59.9, 60.4, 59.7 g; 123.9, 124.1, 130.3, 126.1 pcs, 7.48, 7.47, 7.97, 7.63 kg; 1.37, 1.36, 1.32, 1.36, and 2.28, 2.26, 2.18, 2.26 kg, respectively.

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Color Temperature of Led Light-Emitting Diodes Lighting Devices and Productivity of Laying Hens

Cited by 2 publications

References 11 publications

Effect of smooth switching the light on/off under intermittent LED lighting on the productivity of laying hens

Effect of smooth switching the light on/off under intermittent LED lighting on the productivity of laying hens

The influence of the duration of the “subjective day” under intermittent LED lighting on the daily rhythm of oviposition and the productivity of hens

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