ABNORMAL GROWTH OF WATTLES AND TESTES OF COCKERELS AFTER REMOVAL OF COMBS

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Abstract
When raised in confinement in battery brooders from which direct sunlight was excluded, 10 White Leghorn cockerels with combs removed when 4 wks. old developed larger wattles and testes than 6 raised under similar conditions whose combs had not been removed. The increase in the size of the wattles and the testes is not the result of either exercise or direct solar radiation. The increase in the size of the wattles is not caused by fatty infiltration but is probably compensatory for the removal of the combs and diminished total surface area which is apparently sensitive to the direct radiant energy of the sun.

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