Blackleg, pulpy kidney (enterotoxaemia), black disease, tetanus, and malignant oedema are common causes of death in unvaccinated sheep and cattle. Other animals, particularly goats, are also susceptible.
Seen mostly in lactating beef cows in winter and early spring, grass tetany can lead to the death of most clinically affected animals. The disorder is associated with low levels of magnesium in the blood.
The main roundworm of cattle is Ostertagia ostertagi, known commonly as the brown stomach worm. Control of ostertagia will incidentally control other roundworms of lesser importance.
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