Abstract
THE relative value of individual proteins and the protein level in chick rations, as well as the value of various protein supplements in promoting egg production and hatchability has been investigated by many workers. So far as growth is concerned, most workers agree that the optimum protein content of the usual type of chick ration lies between 18 and 20 percent. However, since young ducklings grow more rapidly than chicks and presumably require protein to build this rapidly increasing body weight, it seems highly improbable that their requirement is the same as that of chicks.There is little or no definite information in regard to the feed requirements of ducklings during their growth period. Several poultry departments have published rations which they recommend for duck feeding but most of them are based on rations which have been fed, with fair success, by commercial duck farms. These rations have been formulated .
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