Abstract
ABSTRACT WHILE many papers have been published on the use of artificial light to stimulate gonad activity among turkeys out of season, the authors have found only one experiment reported where the fluorescent tube was used as one of the sources of light. Since fluorescent tubes are used as the only source of light in many of the cage laying houses for chickens in this area, the following experiment was conducted to compare a 60-watt incandescent lamp and a 15-watt white fluorescent tube for stimulating egg production in mid-winter. Turkeys were used as the experimental birds since the sexual periodicity is fixed from year to year more in turkeys than in chickens. In this latitude (39°N.) turkeys normally do not begin laying until the first week in March unless provided with artificial light. (Scott and Payne, 1937.) These authors using information previously established by Bissonnette (1932), who worked with starlings, demonstrated . . .
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