Show SUPERIOR SIRES HELP DAIRY improvement meant mean mating of ff F males already in hord herd with purebred bulls bull in most cases dairy herd improvement must menn mean the mating of such females na as are already in the herd with a superior male says the new york fork state college of agriculture at ithaca if the superior characters character in the sire eire are more likely to be transmitted than the less leg desirable ones one td la the dams the sires more desirable qualities will predominate in the daughters one of the most outstanding examples of what a good sire can do in a purebred herd Is in the case of em blannard agaard blag bl nard TrI tomia homestead this bull still unproved was wag purchased in loll 1011 by the university of Illi illinois but his ancestors had been excellent as P producers or as transmitters of production the first ten daughters of this bull to freshen gave as two year olds an average increased production over that of their dams of pounds of milk and pounds of butterfat the value of good purebred sires in grading up scrub or grade cows was shown at the iowa state slate college in an experiment starting in 1907 native scrub cattle from arkansas were graded a ded up through the continuous use of purebred sires the had an average increase of pounds of milk and pounds of butterfat over their scrub dams |