| Popis: |
A trial was conducted to determine the effects of dietary protein restriction at an early age and intermittent lighting, designed for curtain-sided houses, on the carcass characteristics of Nicholas commercial male turkeys (sired by male Line 88). Four isocaloric diets containing various levels of protein (100, 90, 80, or 70% of control values) were fed ad libitum from 8 to 56 days of age. All birds were fed control diets from 1 to 7 days of age and from 57 to 124 days of age. Two lighting regimens, a control of 15 h light (L):9 h dark (D), and intermittent (15L:2D:1.5L:2D:1.5L:2D), were each assigned randomly to two rooms from Day 8 until the end of the study. Turkeys reared in intermittent lighting had heavier weights for whole breast (muscle and bone, P |
