New Forest Eye. This is usually seen in groups of younger cattle. Initially the affected eyes weep, progressing to white opacity, ulceration, and if left rupture of the eye. Flies are responsible for carrying the causative bacteria. Sunlight, dust, overcrowding, thistles, and secondary infections predispose to the disease.
Treatment involves early use of antibiotic eye preparations.
This is a severe mastitis usually seen in heifers and dry cows. The udder is infected by a mixture of bacteria, carried by biting and sucking flies. The infection will also, via the bloodstream, settle out into joints making the animal stiff and lame. Treatment involves antibiotics and drainage of affected quarters. Prevention is vital, as once an infection is established the quarter is usually lost.