Professional Skipper Magazine from VIP Publications

S94 July-Aug 2013 with NZ Aquaculture

The only specialised marine publication in Oceania that focuses on the maritime industry, from super yachts to small craft to large commercial ships, including coastal shipping, tugs, tow boats, barges, ferries, tourist, sport-fishing craft

Issue link: https://viewer.e-digitaleditions.com/i/142553

Contents of this Issue

Navigation

Page 90 of 100

A CASE STUDY: Seed nursing by farmers of Udaipur, South India BY VIKASH KUMAR, CENTRAL INSTITUTE OF FISHERIES EDUCATION, MUMBAI, INDIA CO-AUTHORED BY SUVRA ROY, DEBTANU BARMAN AND DEVANAND UCHOI A quaculture is fast developing in most of the northeastern states of India owing to the high demand for fish. Although the region has excellent potential for aquaculture, this growth is not uniform across all the northeastern states due to differing local food habits. Among the states in the region, Assam, Manipur and Tripura have a large percentage of the population as well as fish eating people, and it is important to recognise that the literacy rate in most of the northeastern states is high compared to the rest of the country. With the increasing research evidence that demonstrates the health benefits of eating fish, it is likely that the literate people in rest of the states will also gradually increase their intake of fish. Through seed nursing carp – Labeo rohita, Catla catla, Silver carp and Cirrhinus mrigala – the farmers of Udaipur are able to make sufficient profit within a short period of time and in this way seed nursing is gaining the attention of many fish farmers. In this case study, fish farmers of Udaipur, South Tripura, India were observed to find out more about their seed nursing practices and the marketing of the fish seed. After two days 10 fingerlings are put into the pond to ascertain the water condition, after another two days the pond is harvested to see if the fingerlings have survived. The farmer then uses cleaner to remove insects. After a further two days netting is done and spawn is stocked in the number of 150,000/0.16ha. POST STOCKING MANAGEMENT After stocking, three days are allowed to pass before feeding the spawn and after a further three days a liquid feed like Ostovet is used. After five days they begin feeding with Mustard Oil cake. 15 days after the stocking of spawn they are then transferred into another pond for better growth. After almost 60 days of rearing the carp spawn there is a survival rate of 150,000 from a total stock of 250,000/0.16ha. POND PREPARATION AND STOCKING The size of ponds used by farmers is generally small, with some farmers having ponds with an area of up to 0.5 hectares, others will have more than one pond. Before the stocking of spawn, netting is performed several times. After which poison, i.e. Endosulfan, is used to kill the weed fishes. The farmers then harvest the dead fish and sell them at the market.Three days later the pond is limed @48kg/0.16ha.After seven days they apply Potash (KMNO4) @ 250gm/0.16ha. Potash is mainly used to reduce the effect of poison. Common chemicals used by farmers HARVESTING AND SELLING Farmers harvest five to six times and sell five to six times during the 60 day rearing period and in each harvesting they spend around 200 rupees and engage six or seven labourers Farmers netting A man carrying bhar with fish fingerlings 6 ■ NZ AQUACULTURE ■ JULY/AUGUST 2013

Articles in this issue

Archives of this issue

view archives of Professional Skipper Magazine from VIP Publications - S94 July-Aug 2013 with NZ Aquaculture