Casting the Cow.

Casting the Cow.
After it has been determined that there is enough room for the calf to be delivered per vaginam, the cow is cast in (preferably) right lateral recumbency. This 1) allows the hind legs of the dam to angle forward, which enlarges the operative diameter of the pelvis; 2) lets the heifer slightly spread her legs and stretch the cartilaginous symphysis pubis; 3) aid the calf in coming through the birth canal in a plane parallel to the ground, versus having to rise from the bottom of the abdomen - against the force of gravity - to enter the pelvic inlet; 4) virtually all cows go down during the second stage of parturition, hence it is better to cast them in a preselected location with sufficient room behind the cow to assist her.

Drost M (1983)