Figure 1. The potassium (K) of grass silage (left) is higher than cereal silages (middle) and is very difficult to predict. Mineral analysis (right) of grass silages intended for dry cows is very worthwhile.

An update on hypocalcaemia control

The use of Ca salt containing drenches around calving is popular and is reasonably effective at controlling clinical hypocalcaemia. The most soluble salts are the most effective; calcium chloride is...