Targeted differential monochromatic lighting improves broiler breeder reproductive performance

Sagi Zaguri , Joanna Bartman , Nataly Avital-Cohen , Liron Dishon , Małgorzata Gumułka , Yupaporn Chaiseha , Shelly Druyan , Israel Rozenboim


Light perception in birds is composed of the retina and extraretinal sites, located in the brain. Previous studies indicate that selective photostimulation of the eye decreased reproductive performance, whereas extraretinal photostimulation increases it. Differential photostimulation of the retina and extraretinal sites is based on the retina's sensitivity to green wavelengths and on the red wavelengths' ability to penetrate body tissues. We previously found that short-day exposure to green light within a long-day exposure to red light increases reproductive activity in female turkeys and broiler breeder hens. Furthermore, in a study conducted recently in our laboratory, we found that blue light repressed expression of green light receptor in the retina, which can further enhance reproduction activity in broiler breeders. Here, we examined the “brain activate/eye deactivate” hypothesis on gonadal axis activity and reproductive performance in a broiler breeder flock. Broiler breeder hens and roosters (ROSS 308) were divided into 5 light-treatment groups (controlled rooms with light-emitting diodes [LED] lamps): warm white (control), long-day (14 h) red (630 nm) and short-day (6 h) green (514 nm) (red-green), long-day green and short-day red (green-red), long-day red and short-day blue (456 nm) (red-blue), and long-day blue and short-day red (blue-red). Birds were reared from 20 to 55 wk of age. Eggs were collected daily. Weekly egg production calculated. All eggs were incubated for fertility and hatchability examination. Blood was drawn monthly for plasma analysis. At 35 wk of age (after peak production) and 55 wk of age (end of the experiment), 10 hens from each treatment group were euthanized, and selected tissues and glands were taken for gene expression trials. Providing long-day red light to extraretinal photoreceptors while maintaining retinal photoreceptors on short day with blue or green light significantly improved reproductive activities, manifested by elevated egg production and gonadal axis activity compared with Controls and primary breeder recommendations. Long-day green light reduced reproductive performances. We suggest that targeted photostimulation enhances reproductive and gonadal axis activities in broiler breeders.
Author Sagi Zaguri - The Hebrew University of Jerusalem
Sagi Zaguri,,
, Joanna Bartman - The Hebrew University of Jerusalem
Joanna Bartman,,
, Nataly Avital-Cohen - The Hebrew University of Jerusalem
Nataly Avital-Cohen,,
, Liron Dishon - The Hebrew University of Jerusalem
Liron Dishon,,
, Małgorzata Gumułka (FoAS / Department of Animal Reproduction, Anatomy and Genomics)
Małgorzata Gumułka,,
- Department of Animal Reproduction, Anatomy and Genomics
, Yupaporn Chaiseha - Suranaree University of Technology
Yupaporn Chaiseha,,
, Shelly Druyan - The Volcani Center
Shelly Druyan,,
, Israel Rozenboim - The Hebrew University of Jerusalem
Israel Rozenboim,,
Journal seriesPoultry Science, ISSN 0032-5791, e-ISSN 1525-3171, (N/A 140 pkt)
Issue year2020
Publication size in sheets0.55
Keywords in Englishphotostimulation, extraretinal photoreceptors, broiler breeder, reproduction, gonadotropin-releasing hormone, gonadotropin-inhibitory hormone
ASJC Classification2700 General Medicine; 1103 Animal Science and Zoology
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa (CC-BY); after publication
Targeted differential monochromatic lighting improves broiler breeder reproductive performance of 20-07-2020
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Score (nominal)140
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.38; WoS Impact Factor: 2019 = 2.659 (2) - 2019=3.103 (5)
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FinansowanieThis research was funded by grant no. 0390286 from the Israeli Ministry of Agriculture
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