Abstract
THE EFFECTS of various protein and energy levels on the growth rate of chicks and turkey poults has been investigated by many workers in recent years. Sunde (1956) fed diets to chicks consisting of 20 and 28 percent protein and with energy levels ranging from 655 to 932 Calories of productive energy per pound of feed. The results of this study indicated that a high protein, low-energy diet produced a reduction in growth rate with a decreased efficiency of feed utilization. When the energy level of this diet was increased, the weight of the birds at four weeks of age was increased and a greater efficiency of feed utilization was realized. A significant increase in the growth rate and feed efficiency of chicks fed a diet containing 10 percent tallow was reported by Aitken et al. (1954) when the protein content was increased from 22 to 25 percent. Biely and …
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