Lateral cranial abdominal radiography of the 15 days old pilot calf (head oriented to the right) after administration of 100 ml of barium sulphate contrast using an oesophageal tube
(A) and after consuming 4 l of contrast milk (BaSO4) (B). Note that the rumen (white arrow) and reticulum (black arrow) can be differentiated from the abomasum. Some barium sulphate
contrast has passed to the small intestine.