Four out of the six calves drank morethan 5 l in one meal and the highest voluntary intake
was 6.8 l in one meal (13.2% of BW). Abdominal radiographs showed that the abomasum has a large ability
for distension. Milk in the rumen was not observed in any of the calves, regardless of intake. The behaviour
of the calves was observed for 2 h after each test session. No behaviour indicating abdominal pain or discomfort was observed regardless of intake. The results indicate that when warm whole milk is administered
from a teat bottle, farmers can increase the amount of milk they offer their calves beyond the traditionally