Haemolytic disease in new born calves.
Neonatal haemolytic disease was diagnosed in a Bos indicus cross bred beef herd in south-east Queensland. The evidence suggested that this was due to B. argentina vaccination for babesiosis while non-pregnant or less than one month pregnant. The cows received 5 or 6 vaccinations during their breeding life, which indicated that antibody levels can persist for long periods. The autopsy, histopathological and haematological findings indicated that the mechanism was disseminated intra-vascular coagulation which occurred in calves dying within 24 hours of birth. This resulted in fibrin deposition in pulmonary capillaries and severe pulmonary oedema.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology* / Q000473:pathology; D004211:Disseminated Intravascular Coagulation / Q000150:complications / Q000662:veterinary; D004899:Erythroblastosis, Fetal / Q000209:etiology / Q000473:pathology / Q000662:veterinary*; D005260:Female; D011247:Pregnancy; D014611:Vaccination / Q000009:adverse effects / Q000662:veterinary*