Vol. 11, Special Issue 3 (2022)

Author(s):
Anugraha Mercy Easaw and K Vijayakumar

Abstract:
Bovine mastitis is a disease occurring worldwide causing tremendous economic loss. Region to region variation persists and epidemiological studies aid in the understanding of the various risk factors. Fifty-one animals with the signs of clinical mastitis over a period of one year was included in this study. Data regarding various factors including age, breed, stage of lactation, parity, quarter affected, previous history of mastitis and seasonal occurrence. Varying results were obtained for each factor, with animals with 4 – 6 years of age mostly affected (52.94 per cent). Breed wise predisposition was observed for crossbred of Holstein Friesian (45.10 per cent) when compared to Jersey crossbreds. The highest occurrence of mastitis was observed in late lactation (41.18 per cent) and in first two parities (39.22 per cent each). In this study, the hind quarters (53.85 per cent) were more affected in which right hind teat (32.31 per cent) was found to be most affected by mastitis compared to all other quarters. The season in which most clinical cases of mastitis were observed was in monsoon season (41.18 per cent). This study showed varying results for various factors which could aid in the prevention and control of the disease.