Show purebred pure bred sires improve more than head of br breeding eed stock on tanas farms in the united states ure are undergoing systematic improvement pro through the use nab of pure bred sires persons persona participating in this work at the doge close of the year 1024 1924 numbered exclusive users of pure bred sires widely distributed among 40 46 states the agricultural department in conjunction with state and county extension workers work cra la Is aiding these thee owners to improve their methods of breeding and feeding |