Show chance for improvement of herd Is IB big problem the old saying that a good sire Is halt half the herd might be truthfully completed with the statement that a poor one to ta blame near all of it the I 1 he problem of a new herd sire la Is one which many farmers will be facing this winter the main chance tor for herd improvement lies in the introduction tro of better blood through the sire at the iowa experiment station by using purebred pure bred bulls on scrub cows in the second generation an increase of per cent in milk yield and per cent in fat production was obtained and many ot other her instances could be cited of the value of bf a purebred sire at the head of the herd |