Show U ac L GUINEA PIG AID TO scientists of especial interest to live stock breeders bleeders Bre eders prepared by the united states state of agriculture service it way may be possible some day for the live stock producer to breed his animals in such buell a way as to speed up the growth of their offspring scientists of tile the united states department of agriculture have accomplished this with guinea pigs and believe the same principles may apply to live stock dr hugh 0 mahee geneticist of the bureau of 0 animal industry and hla his associates observed that inbreeding and cross breeding of guinea pigs ex arted a marked influence on the rapid ity or slowness of the growth they are starting new researches to te test 61 t these scientific principles of 0 inheritance on live stock esi pec lally swine r sheep heep and cattle if the live stock breeder could influx ence the rate of growth of 0 ills 1118 young I 1 farm animals as tins has been done with guinea pigs he be would have control of an important element in the cost of production it Is generally accepted that rapid growth Is economical growth the department scientists obtained various results by cross breeding the members of unrelated families of guinea pigs each ot of which had been thoroughly inbred when both parents were members of lightweight families the offspring grew faster and larger than either parent at the same age when one parent was a lightweight find and the other a heavyweight the offspring grew more nearly like the heavyweight parent gaining especially fast in case the mother was the heavyweight the investigators gained no advantage of growth by crossing two heavyweight families but did improve the fertility of the offspring the hen heaviest family of inbred guinea pigs outgrew all others during their first tour four months |