Читать книгу Farm Animal Medicine and Surgery - Graham R Duncanson - Страница 182

This condition is not fully understood and it is thought to be spread by arthropods or needles from mass vaccination procedures (Strugnell and McAuliffe, 2012). The main clinical signs in the UK are hind limb oedema, pyrexia and painful, swollen udders in dairy cows, with reduced fertility in stock bulls. Clinical signs gradually resolve and a full recovery may take 10 days or longer. Diagnosis is from fresh blood smears taken in a clean environment and stained with Giemsa. Treatment with 3 days of tylosin at 5 mg/kg im is said to be more effective than oxytetracycline at 10 mg/kg im.