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Title: Effect of intermittent lighting schedules during the natural scotoperiod on T-3-induced ascites in broiler chickens
Authors: Hassanzadeh, M ×
Bozorgmerifard, MH
Akbari, AR
Buyse, Johan
Decuypere, Eddy #
Issue Date: Oct-2000
Publisher: Carfax publishing
Series Title: Avian pathology vol:29 issue:5 pages:433-439
Abstract: The influence of an intermittent lighting programme during the 12 h of the dark period on the incidence of ascites and on metabolic parameters of broiler chickens was examined. A group of 336 1-day-old male broiler chickens mere randomly allocated to two open rooms At 5 days of age, an intermittent lighting schedule of 3 h of dark alternating with 1 h of light was introduced during the night in one room, while in the second room the schedule consisted of 23 h of light alternating with 1 h of dark. One-half of the birds in each room were fed a diet supplemented with 1.5 ppm 3, 3', 5-triiodothyronine (T-3), while the other half received a control diet. Mortality associated with ascites was significantly higher in birds fed the T-3-supplemented diet, but was significantly lower in birds in the room receiving the intermittent lighting schedule. The intermittent lighting programme was also associated with a temporary reduction in growth rate, packed cell volume and plasma T-3 concentrations, suggesting reduced oxygen utilization. However, final body weights were not significantly affected by the lighting programme. It was concluded that imposing 12 h of intermittent lighting during scotoperiod reduces the incidence of ascite mortality.
URI: 
ISSN: 0307-9457
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Division of Livestock-Nutrition-Quality (-)
× corresponding author
# (joint) last author

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