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Effects of Timing and Duration of LED Light Supply during Incubation on Embryonic Development andHatching Parameters of Sasso Eggs
Author(s)
Oluwadamilola Moyin Oso Regional Centre of Excellence in Poultry Sciences, University of Lomé,01BP1515, Lomé,Togo
Kossi Metowogo Department of Animal Physiology, Faculty of Science, University of Lomé,01BP1515, Lomé,Togo
Benjamin Adjei-Mensah Regional Centre of Excellence in Poultry Sciences, University of Lomé,01BP1515, Lomé,Togo
Oyegunle Emmanuel OKE Department of Animal Physiology, Federal University of Technology,P.M.B 2240, Abeokuta,Nigeria
Clement Gbongbon Regional Centre of Excellence in Poultry Sciences, University of Lomé,01BP1515, Lomé,Togo
Okanlawon Mohammed Onagbesan Department of Animal Physiology, Federal University of Technology,P.M.B 2240, Abeokuta,Nigeria
Kokou Tona Regional Centre of Excellence in Poultry Sciences, University of Lomé,01BP1515, Lomé,Togo
Abstract
Light has been used as a management tool during incubation, but with varying results. The study was to evaluate the effect of egg exposure to LED light at different phases and for different durations on embryo development, hatching and hematological parameters. Five hundred Sasso broiler eggs were assigned to 4 treatments: eggs incubated in the dark throughout incubation (TA), eggs exposed to light from days 1-21 (TB), days 7-21 (TC) and days 14-21 (TD) of incubation. The eggs were photo-exposed using a 6,500k cool LED at 788 clux intensity. The result shows that TB, TC and TD had decreased (P<0.05) average hatch time, internal piping duration, external piping and hatch duration compared to TA. TA eggs recorded a wider hatch window compared to other treatments and the narrowest was TB, comparable to TC and TD. Hematological parameters were not affected at hatch, but the heterophil/lymphocyte ratio was significantly lower (P<0.05) in all photo-incubation treatments when compared to TA. Hatching events in slowgrowing broiler birds can be accelerated by pre-hatch light stimulation, moreover, photo-incubation from the first day of incubation narrowed the spread of hatch. Photo-incubating eggs from days 1-21 will enhance hatch synchronization.
Publication Details
Page(s) 572-579
DOI 10.47278/journal.ijvs/2023.003
Published Journal: International Journal of Veterinary Science, Volume: 12, Issue: 4, Year: 2023
Keywords
broiler Light incubation Embryo Development Hatching Event PhotoIncubation
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