Abstract
MANUFACTURERS of some forced draft incubators recommend that turkey eggs be removed from the incubator to a separate hatcher at 24 days’ incubation. This change involves a drop in incubation temperature from 99¾ to 97°F., cessation of turning, and a change in position from an angle of 45 degrees from horizontal to a horizontal position in which the eggs lie on their sides.The experiments reported herein were undertaken to determine the effects of transfer to the hatcher and to each of the hatcher conditions at 12, 15, 18, 21, 24, and 25 days’ incubation, respectively. The effects of hatcher temperatures of 93, 95, 97, 98, 99¾ and 102°F. were also determined.Egg length was measured prior to incubation so that its relation to hatchability under the various experimental conditions might be determined.Romanoff (1935) reported experiments in which turkey eggs were incubated for three weeks in a forced draft .
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