Abstract
RECENT studies by Sielder and Schweigert (1953), Yacowitz (1953), Sunde (1954a), and Runnels (1955) indicated that the use of animal fats in poultry rations improved the utilization of the feed for broilers. Sunde (1954b) and Carver et al. (1954) reported that a hydrogenated fat or stearic acid would not improve feed utilization, but that all other fats tested would improve the utilization of the feed fed to young chicks. Both workers reported that the saturated fats were not absorbed by the digestive tract, and therefore offered very little nutritionally.Biely and March (1954) reported that in both chick and poult rations the addition of fat may be advantageous when relatively high levels of protein are fed. Siedler et al. (1955) reported that 3 or 6 percent fat or 3 percent free fatty acids did not decrease the rate of gain and were utilized efficiently.EXPERIMENTAL PROCEDUREDay-old chicks of both …
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