The SC or SB (1 g/(d calf) containing a total
of 20 billion CFU) was divided into two equal portions and administered orally to each calf
with a 50 ml syringe (1 g of SC or SB diluted in 10 ml sterile water) 10 min before milk
feeding to assure entry to the rumen. An equal volume of water was administered orally
with a syringe to the control calves.