Acarine Borne Haemoprotozoan Diseases in Bovine Calves.

Occurrence of haemoprotozoan diseases in 72 young bovine calves was investigated from January, 2008 to June, 2009 in semi arid Jaipur, Rajasthan. It was observed that 25% of the animals were infected with one or other haemoprotozoan parasites. However species wise prevalence data revealed that Theileria annulata predominated (12.5%), followed by Anaplasma spp. (11.1%) and Babesia spp (4.2%). Concurrent infections with T. annulata and Anaplasma spp. were witnessed in two (2.8%) calves. The parasitaemia however, predominated with Anaplasma spp. (50-65%) followed by Theileria spp. (30-40%) and Babesia spp. (20-30%). Interestingly, transplacental fatal theileriosis in a three day old calf, analogous to human malaria has been pioneering documentation for further systematic studies. [ABSTRACT FROM AUTHOR]