OBSERVATIONS ON 3 OUTBREAKS OF LEPTOSPIRA-INTERROGANS SEROVAR POMONA INFECTION IN LAMBS

Sickness and deaths associated with leptospirosis were reported in thr ee lamb flocks in the Manawatu region. The clinical, pathological and serological features of Leptospira interrogans serovar pomona infectio n are described. The mucous membranes of affected animals were pale an d jaundiced. Haemoglobinuria, haemoglobinaemia and centrilobular hepat ocellular necrosis were also consistent findings. All clinically sick lambs had very high titres in the microscopic agglutination test for L . pomona. Circumstantial evidence of pigs being the source of infectio n was found in one of the three cases.