Threats associated with non-infectious diseases in modified extensive shrimp farming systems of West Bengal, India
2009
Nagesh, T. S. | Abraham, T. J. | Ghosh, A. R.
The influence of farm establishment and management practices adopted in modified extensive shrimp farms of West Bengal, India on the non-infectious diseases was studied. A total of 60 shrimp farms culturing Penaeus monodon were randomly taken for the study. Information was collected through a structured questionnaire by interviewing the farmers, taking into account all their management practices such as farm establishment, pre-stocking management, stocking management and post-stocking management and particulars regarding disease occurrence during 2001 and 2002 covering two crops. The data generated were evaluated for their association with disease outbreak. Three major non-infectious diseases viz., epicommensal fouling, soft-shelling and gill choking were noticed during the study. Among the variables studied, provision for inlet/outlet, pond ploughing, pond desilting, duration of pond preparation, source of seeds, acclimatization, stocking density, mean water exchange per day, type of aeration and number of crops taken in a year were found to be significantly associated with the incidence of noninfectious diseases.
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