Globally aquaculture has become a major enterprise producing fish, shellfish and many aquatic foods for human consumption besides numerous raw and processed products for human use. Fish forms an important source of quality animal protein and its demand has been increasing due to its numerous health benefitting nutrients and good source of omega 3 fatty acids. The worldwide decline of marine stocks has provided impetus for rapid growth in aquaculture which is poised to be one the fastest growing food-producing sectors. Currently, more than 40 % of the total global fish production is contributed by aquaculture and more than 220 species of finfish and shellfish are farmed. As the human population continues to expand beyond 7 billion, its reliance on farmed fish production as an important source of protein will also increase. India has also emerged as a major fish producer, particularly from aquaculture sector where it ranks at 2nd in the world. While inland fish production has reached to the tune of 10.74 MMT in the country, more than 80% of this is being produced through aquaculture sector. The journey of freshwater aquaculture in the country has started from the small scale homestead activity during preindependence period, through achievements of major milestones such as development of induced breeding technology (1957); composite carp culture (1960s); introduction of exotic fish and successful implementation of series of schemes such as NDP (1965), AICRPs (1971), ORP (1974-75), Lab-to-Land Programme (1979), etc and has reached to the present day’s status of a large scale commercial and intensive farming enterprise.
See Full PDF See Full PDFThe present study was undertaken with a view to finding out the carps poly-culture technique, pond management and cost analysis in Mohanpur, Rajshahi region of Bangladesh. The study was conducted for a period of four months (October 2010 to February 2011). It provides an overview on the guiding principles, aspects and tasks, and presents the applicable production techniques and patterns of carp polyculture. It is expected that this publication will help identify resources and contribute to the successful planning and realization of fish production by those fish pond owners and operators who need to strengthen and improve their knowledge on the subject. 1. Introduction The polyculture of major and exotic carps and monoculture of catfish (P. sutchi), Telapia are the most widely practiced culture system in Bangladesh. Three Indian major carps namely, Labeo rohita, Catla catla and Cirrhinus mrigala and one exotic carp, Hypopthalmichthys molitrix now account for more than 78% of total po.
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Indian Fisheries Outlook, ICAR-CIFRI, Kolkata, India
Aquaculture is being the fastest food production sector in the world with an estimated production of about 179 million tonnes. The fish production from capture fisheries (96 million tonnes) is almost stagnant for many decades but the demand is rising significantly due to the awareness about the health benefits of fish consumption. The additional demand for fish consumption must be achieved only through aquaculture. The current fish production from aquaculture has increased from 44 million tonnes (2005) to 82 million tonnes (2018) and it is sharing almost 45% of total global fish production but this production level is not sufficient to fulfil the demand (FAO, 2020). This article will focus on the present status and future scope of freshwater aquaculture in India to achieve blue revolution in India.
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The present study was undertaken with a view to finding out the carps poly-culture technique, pond management and cost analysis in Mohanpur, Rajshahi region of Bangladesh. The study was conducted for a period of four months (October 2010 to February 2011). It provides an overview on the guiding principles, aspects and tasks, and presents the applicable production techniques and patterns of carp polyculture. It is expected that this publication will help identify resources and contribute to the successful planning and realization of fish production by those fish pond owners and operators who need to strengthen and improve their knowledge on the subject. 1. Introduction The polyculture of major and exotic carps and monoculture of catfish (P. sutchi), Telapia are the most widely practiced culture system in Bangladesh. Three Indian major carps namely, Labeo rohita, Catla catla and Cirrhinus mrigala and one exotic carp, Hypopthalmichthys molitrix now account for more than 78% of total pond production (ICLARM, 2002). The concept of polyculture of fish is based on the concept of total utilization of different trophic and spatial niches of a pond in order to obtain maximum fish production per unit area. Different compatible species of fish of different trophic and spatial niches are raised together in the same pond to utilize all sorts of natural food available in the pond. The possibilities of increasing fish production per unit area, through polyculture, is considerable, when compared with monoculture system of fish. Different species combination in polyculture system effectively contribute also to improve the pond environment. Algal blooming is common in most tropical manure fed ponds. By stocking phytoplanktophagus Silver carp in appropriate density certain algal blooming can be controlled. Grass carp on the other hand keeps the macrophyte abundance under control due to its macrovegetation feeding habit and it adds increased amount of partially digested excreta which becomes the feed for the bottom dweller coprofagous common carp. The bottom dwelling mrigal, common/mirror carp help re-suspension of bottom nutrients to water while stirring the bottom mud in search of food. Such an exercise of bottom dwellers also aerates the bottom sediment. All these facts suggest that polyculture is the most suitable proposition for fish culture in undrainable tropical ponds. Actually the development of aquaculture production technology is a continuous process. System approach should be addressed in education and research process so that we can find the need or problem of rural farmers and thereby suggest for appropriate aquaculture technology.
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Journal of Krishi Vigyan
In this study, the carps were cultured with Asian seabass (Lates calcarifer) to access the feasibility, growth, survival and production of fishes in freshwater condition for two consequent years. Carps (Catla catla, Labeo rohita, Cirrhinus mrigala and Ctenopharyngodon idella) were cultured along with seabass in experiment pond whereas only carps were reared in control pond. The result showed that the water and sediment quality were optimum in both the ponds as per fish growth and survival. The work revealed that average growth of carps in terms of length, weight, biomass and production was significantly high (P<0.01) in experiment pond during the subsequent years of the study. Satisfactory results and the positive impact of introducing seabass in carp polyculture may be attributed to seabass stocking after the carps have attained appropriate size. The stocking of seabass seeds was done after getting the proper size of carps that help protect these carps from predation and chasing, availability of primary food components for consumption than the supplementary feed and consumption of weed fish by seabass minimized competition for food, oxygen and space for carps. Based on these findings, it was concluded that such practices would be a milestone for fish farming in freshwater.
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Aquaculture Economics & Management
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JOURNAL OF EXTENSION EDUCATION
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International International Journal of Avian & Wildlife Biology
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Journal of Krishi Vigyan
