it is well documented that the induction of the oesophageal groove reflex in the milk fed calf depends on certain prerequisites : the fluid drunk by the calf must come into contact with the receptors located in the pharynx , it must be consumed voluntarily by the animal without undue disturbances , it should have no offensive smell or taste and the general status of the calf should not be disturbed .
C0026131
milk
C0005889
fluid