Sunday, March 15, 2026

Is light from tunnel fans determining birds’ day length?

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By Michael Czarick

& Dr. Brian Fairchild

Special to Poultry Times

ATHENS, Ga. — Broiler producers, especially those growing large birds (>6 lbs.), often prefer to raise their birds under fairly low light. Low light levels, often less than 0.2 ft. candles, are typically sought in an effort to reduce bird activity which in turn will help to improve feed conversions, as well as reduce scratches and condemnations. Though growing broilers under minimal light has proven beneficial in many instances, there is a potential downside, namely a reduction in day-length control, particularly during hot. . .

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