The Effect of Controlled Ambient Temperature on Some Factors Associated with Egg Laying in Turkeys ,

AN EARLIER report from this station (Kosin et al., 1952) has shown that the fertilizing capacity of Broad Breasted Bronze males was improved by temperature—“conditioning” them prior to mating at 65°F. This effect was a prolonged one, particularly when the temperature-conditioned males remained in pens maintained at that temperature during the mating season. The present paper will report on certain aspects of egg production in hens subjected to two different temperature environments. METHODS AND MATERIALS The basic experimental design of the study was described in some detail in the paper already cited (Kosin et al., 1952). Therefore, it should be necessary only to augment that description by such additional details as are pertinent to the present report. The reader is also referred to the paper by Burrows and Kosin (1953) as well as the unpublished thesis of the senior author (Mitchell, 1952) where the pertinent literature is more extensively …