Features of development of visceral organs in embryos of egg cross chickens ‘Lohmann Brown’ under red and green monochromatic LED lighting
- Authors: Chelnokova M.I.1, Chelnokov A.A.1
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Affiliations:
- Velikie Luki State Agricultural Academy
- Issue: Vol 17, No 1 (2022)
- Pages: 112-123
- Section: Animal breeding
- URL: https://journal-vniispk.ru/2312-797X/article/view/315655
- DOI: https://doi.org/10.22363/2312-797X-2022-17-1-112-123
- ID: 315655
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Abstract
New data on the features of development of visceral organs in embryos of egg cross chickens ‘Lohmann Brown’ under red and green monochromatic LED lighting were obtained. The effect of two continuous LED lighting modes has been studied: experimental modes - r ed and green light, control - d arkness. The absolute values of weight dimensions and specific growth rate (according to the Schmalhausen-Brody formula) of heart, muscular stomach, liver of chicken embryos were estimated using morphometric methods. The studies proved that red and green LED lighting has a stimulating effect on the embryonic development of visceral organs (heart, muscular stomach, liver) in ‘Lohmann Brown’ egg cross compared to the control (darkness). Under red and green LED stimulation, chicken embryos prevailed in the heart mass from the 14th to the 20th day of embryogenesis. The muscular stomach and liver of chicken embryos developed more intensively under red illumination on the 18th and 20th days, and under green illumination - a similar effect on the muscular stomach was noted on the 19th and 20th days, on the liver - o n the 20th day. It has been established that in the early ontogenesis of ‘Lohmann Brown’ chickens there were several critical stages (phases). They fall on different days of development and characterize the features of rhythmicity in growth processes of visceral organs in chicken embryogenesis under LED stimulation of red and green spectrum. Chicken embryos under red and green illumination had the highest growth rate of heart on the 17th and 20th day, respectively; muscular stomach under red illumination - o n the 17th and 20th days, liver - on the 16th and 17th day under red and green illumination. By the hatching period on the 20th day, there were no differences in the development of visceral organs of chicken embryos depending on red and green light spectrum. The hatching of ‘Lohmann Brown’ chicken embryos exposed to red and green light occurred on the 20th day of incubation - a day earlier than under control conditions (darkness). The proposed biological causes underlying the effect of monochromatic light of different color spectrum on embryogenesis of chicken embryo and organs are discussed.
About the authors
Marina I. Chelnokova
Velikie Luki State Agricultural Academy
Email: marinachelnokova@yandex.ru
ORCID iD: 0000-0002-9353-767X
Candidate of Biological Sciences, Head of the Veterinary Department, Faculty of Animal Husbandry Technology and Agroecology
2 Lenin ave., Velikiye Luki, Pskov region, 182112, Russian FederationAndrey A. Chelnokov
Velikie Luki State Agricultural Academy
Author for correspondence.
Email: and-chelnokov@yandex.ru
ORCID iD: 0000-0003-0502-5752
Doctor of Biological Sciences, Professor of the Department of Animal Husbandry and Processing Technology, Faculty of Animal Husbandry Technology and Agroecology
2 Lenin ave., Velikiye Luki, Pskov region, 182112, Russian FederationReferences
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