If you were a Holstein herd Ayr calving. Used to house cows through summer and lows out. Embraced the grass system out end of Feb to late Nov. Split block autumn and spring. Is there room for minus stature Holsteins calving in every year? Or is it a pipe dream and need to embrace Irish genetics or Frisians? Which one x would embrace 8000l 4.5% bf 3.5% p. Calving in every year on 2 t of conc off grass based rations. I don't think cross breeding for me with pedigree cows.