Fish health management and Biosecurity Measures in Marine RAS

Loka, Jayasree and Sadhu, Narasimhulu and Shiva, Ponnaganti (2022) Fish health management and Biosecurity Measures in Marine RAS. In: Training Manual on nursery rearing of Indian pompano in Recirculating Aquaculture System. CMFRI Training Manual Series (28). ICAR- Central Marine Fisheries Research Institute, Visakhapatnam, pp. 60-78.

Text ICAR- CMFRI Training Manual Series No. 28_2022_Chapter 7.pdf Download (3MB)

Abstract

Mariculture, especially cage farming of finfish in marine and coastal waters is a highly economically viable culture system in the world, due to its high production and export market value. Recirculation technology is emerging in the marine aquaculture industry due to its unique form of fish farming and is gaining lot of attention all over the world. High density intensive culture of fish in indoor tanks, with a controlled system will be highly beneficial compared to the traditional method of growing fish in open marine waters (cages/raceways/pens etc), where control of environmental conditions is not possible. RAS with proper management will have several advantages such as year round culture, harvest, flexibility in species selection and site of culture, conservation of water, improvement in water quality through filtration and recycling of clean water, reduction in stress and high survival and production of fish as compared to other mariculture systems. But high density production in a confined volume without proper management will always result in disease outbreaks, which leads to economic loss in a short span of time. Consideration of good health management is the most critical part of successful and efficient operation of recirculating systems. Occurrence of diseases in recirculating systems varies between the species and is mainly due to the lack of management practices. In recent years, prevalence and spread of diseases has been increasing enormously in mariculture systems which are caused by a wide range of infections, including bacteria, viruses, fungi, protozoan and metazoan parasites; nutritional and environmental problems etc. Many of the marine finfish are encountered with many viral, bacterial and parasitic infections during the culture period, due to several environmental stress conditions and also through horizontal transmission. Hence, a thorough knowledge on diseases and pathogen profiling, surveillance and monitoring programmes and also development and implementation of preventive protocols as better management practices of RAS farming, is the need of the hour. Major common diseases encounter in cultivable marine fish and their management practices are mainly discussed in this chapter.

Item Type:	Book Section
Uncontrolled Keywords:	Fish; health management
Subjects:	Fish and Fisheries > Fish Nutrition Marine Fisheries > Fisheries Management Aquaculture > Fisheries Management
Divisions:	CMFRI-Visakhapatnam
Depositing User:	Arun Surendran
Date Deposited:	31 Mar 2023 08:29
Last Modified:	31 Mar 2023 08:29
URI:	http://eprints.cmfri.org.in/id/eprint/16922

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