The Effect of Light and Temperature on Molting in Turkeys

Light Regulation in Turkey Management

“…The results of these experiments do not coincide entirely with the reports of Mueller et al (1951) or Moultrie et al (1955) or McCartney (1956). They found weight gain to be larger with longer daylight, which corresponds most nearly with the present seasonal day-length treatment.…”

“…One of these is the effect on subsequent management for reproductive purposes and the other is the effect on market quality characteristics such as growth and feathering. Previous investigations bearing on the latter phase by Mueller et al (1951), Moultrie et al (1955) and McCartney (1956) indicated that body weights were somewhat larger in groups receiving the longer light periods up to 15 hours. However, the feather quality of the birds grown on short days was superior to that of those grown on long days.…”

The Effect of Light on Performance and Behavior in Diethylstilbestrol-Treated Male Turkey Broilers

“…This has usually been explained on the basis of the effects of environmental temperature on feed consumption. Rate of feather development has also been demonstrated to be influenced by the hours of daily light (Mueller et al, 1951). However, light stimulation may also be involved either indirectly through an effect on sexual development (Margolf et al, 1947) or through some more direct neurophysiological path.…”