Show MUCH DEFENDS ON THE DAIRY BULL BUIL it la Is a comparatively simple matter to increase tile he production of I 1 dairy herds through the use of 0 pure bred bulls until the herd averages pounds of butterfat a year per co cow says the U S D A As production increases from to lbs it becomes moro more difficult to find bulls that are arc good enough bough to increase ere se production A study ot of dairy bulls each having five or more daughters whose yearly milk and butterfat butter tat records could be compared with the yearly milk and butterfat butter tat of nine bulls which were used in herds where the dams averaged yearly pounds ot of butterfat or less every one increased the production of the daughters over that of 0 the dams ot of the daughters ot of the 19 49 bulls which were vere used in herds that averaged between and pounds of butterfat 44 increased and 5 decreased production of 0 the tha 85 bulls used in herds that averaged from to pounds of 0 butterfat butter tat 57 increased aud and 28 decreased production 0 of the 57 bulls used in herds that averaged pounds of butterfat bulter fat or over 28 increased and 29 decreased production |