Involvement of Leptospira serovars with Different Clinical Conditions of Leptospirosis in Cattle
Balakrishnan GovindanDepartment of Veterinary Microbiology, Madras Veterinary College, Tamil Nadu Veterinary and Animal Sciences University, Chennai - 600 051, India.
Abstract: Leptospirosis is a worldwide zoonosis affecting domestic animals, pet animals, wild animals and human beings. It causes abortion, repeat breeding, jaundice and haemorrhagic mastitis in bovines. The present study was undertaken to understand the involvement of different leptospiral serovars with different clinical conditions of leptospirosis among bovines. A total of 1122 serum samples collected from cattle with different clinical conditions which included abortion (247), repeat breeding (429), jaundice (215), haemorrhagic mastitis (231) were subjected to Microscopic agglutination test. The study revealed the association of hardjo with abortion (21.98 per cent), repeat breeding (47.25 per cent), jaundice (15.38 per cent) and haemorrhagic mastitis (15.38 per cent). The serovar pomona was associated with abortion (19.67 per cent), repeat breeding (39.34 per cent), jaundice (21.31 per cent) and haemorrhagic mastitis (19.67 per cent). Serovar hebdomadis was associated with abortion (29.48 per cent), repeat breeding (37.17 per cent), jaundice (16.67 per cent) and haemorrhagic mastitis (16.67 per cent). Serovar ballum was found to associate with abortion (18.75 per cent), repeat breeding (46.87 per cent), jaundice (15.62 per cent) and haemorrhagic mastitis (18.75 per cent). In addition, the serovar australis was found to associate with abortion (19.29 per cent), repeat breeding (42.10 per cent), jaundice (19.29 per cent) and haemorrhagic mastitis (19.29 per cent). However from this study, serovar specificity with regard to clinical conditions in cattle could not be established as all the five serovars were involved with different clinical conditions.
Keywords: Leptospira serovars; Clinical conditions; Leptospirosis; Cattle Back to TOC