Abstract
ONE of the first to conduct extensive studies of energy utilization with chickens was Fraps (1946) who showed that available energy was related to the fiber content of feedstuffs. Heuser et al. (1945) and Bird and Whitson (1946) reported that rations containing fibrous ingredients such as oats and wheat by-products were the least efficient for egg production. Scott, Matterson and Singsen (1947) showed that an efficient broiler ration, if properly supplemented, could be formulated with high levels of corn. The acceptance of high-efficiency starter diets stimulated the development of similar diets for adult stock.Quisenberry, Sherwood and German (1949) and Singsen, Matterson and Kozeff (1950) in comparing a conventional ration with a high corn ration found that the latter produced more eggs per unit of feed consumed. Bearse, Berg and Miller (1950) reported that the energy content of growing and laying rations had no effect on egg weight or hatchability… .
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