Economic impact of bacterial disease caused by motile Aeromonas (MAS) in carp culture practices of assam, India: An analysis

The study was carried out in three districts of Assam namely Nagaon, Morigaon and Sonitpur to estimate the economic loss in carp culture due to Motile Aeromonas septicemia (MAS) during 2016–18. A total of 91 small, medium and large farms were found to be affected by MAS out of 293 farms surveyed on the basis of information on occurrence of disease. The result revealed that highest mortality and maximum loss in income was observed in small pond category (<0.2 ha) where mean mortality 9.22 per cent was recorded in Nagaon district followed by Morigaon 9.14 per cent and Sonitpur 4.00 per cent. Similarly, mean loss in income (Rs/ha/yr) was highest in Nagaon district Rs.23304.24 followed by Morigaon Rs.19532.14 and Sonitpur Rs. 11304.56. The overall mean economic loss for the district under studies due to MAS was recorded to be Rs. 16031.32 ha/yr with a mean loss in weight 158.92 kg/ha/yr. This clearly depicts that mean financial loss of Rs. 16031.32 kg/ha/yr has been reported due to MAS in the three district under study. Thus it was found that MAS has significant impact in carp culture practices of Assam.