Clinical signs of milk fever in sheep
Characteristically, milk fever in sheep occurs in outbreaks, involving multiple animals, although it is not uncommon for individual sheep to be affected. Usually, less than 5% of ewes are affected, but severe outbreaks may involve up to 30% of the flock.
Clinical signs are very similar to sheep ketosis, but progression is usually much faster. Signs include drowsy appearance, depression and coma, salivation, a stiff or staggering gate, sternal recumbency with the head stretched out and the chin on the ground with legs folded beneath or stretched out behind the ewe.