COMPARATIVE PREVALENCE OF SUBCLINICAL BOVINE ANAPLASMOSIS UNDER DIFFERENT CATTLE MANAGEMENT SYSTEMS IN HARYANA

Abstract

A total of 452 blood smears were prepared from cattle kept under four types of dairy production systems (three large organized dairy farms, six commercial dairy farms, nine small holder dairy production units and twelve Gaushalas) for detecting Anaplasma marginale infection during 2007. During the study period, none of the cattle sampled had clinical symptoms of anaplasmosis. Overall preva lence of A. marginale in cattle was 46.9%. Large organized dairy farms had significantly higher prevalence (59.2%) than commercial dairy farms (46.07%), Gaushalas (44.1%) and small holder dairy units (35%). Overall parasitaemia of A. marginale in cattle was 0.14%. Large organized dairy farms had significantly higher parasitaemia (0.16%) than commercial dairy farms (0.11%), Gaushalas (0.13%) and small hold er dairy units (0.14%). High prevalence of A. marginale and absence of clinical cases in cattle highlights the endemic stability of anaplasmosis in Haryana state.