Experience and judgment are needed to decide when to assist with calving. After one or two hours of intense pushing, the forefeet of the calf should appear. If there are signs of distress, assistance should be provided. It is very important to wash and disinfect hands, arms, the cow's vulva and all equipment used during assistance. The position of the calf must be checked first and, if necessary, corrected before using traction. Traction should be applied as the cow pushes.
If the cow gets contractions (uneasy, lies down and gets up again) for more than eight hours without observing the breaking of the water. Some abnormality is preventing stage 1 of the birth process to progress to stage 2.
The first principle to remember is that if either the front legs or the head is bent backwards, the calf cannot come out. With the right training, the following three common problems (incorrect postures) can be observed and corrected easily when done soon after the water has broken, and the birth canal is still very wet and naturally lubricated.
A process called uterine involution begins immediately after calving. The uterus shrinks in size considerably and layers of tissue must be renewed.
Although ovarian activity may lead to ovulation as early as 15 days after calving, this is usually not accompanied by heat (silent heat), and the first few cycles may be of short duration. However, more than 90% of cows should have been observed in heat at least once within 60 days of calving.