NAGPUR: Magur fish is considered as a great delicacy by fish eaters. But this fresh water fish is fast dwindling in Maharashtra. With an aim to conserve this fish and promote Magur farming by farmers in the state and region, the College of Fishery Sciences has started a seed production and breeding programme in the college.
From August onwards the college would make available seeds of this fish to farmers. The fish is in demand from the state fishery board as well as the fish cooperatives.
"There is no agency in the state which is producing Magur seeds. So we initiated a project initially to multiply it on a small scale. But when we found the technique good enough to be used for commercial seed production we started this initiative. The seed production technique is very technical and specialized and not everyone can do it," said professor R D Kalorey, acting associate dean of the college and dean of faculty of fishery sciences in Maharashtra Animal and Fishery Sciences University ( Mafsu).
Though the college is already into seed production of other major fresh water fish Rohu, Katla and Mrigal the multiplying Magur is a highly skilled job and hence the college has created a separate facility for it near Telangkhedi garden.
The college is using a specialized technique called as breeding by stripping method. Swapnil Ghatge, assistant professor in the college, explained that the males are first killed, their testes removed and the sperms flushed out. To remove eggs the female fish are pressed along the length of their body to squeeze out all the eggs. Both eggs and sperms formation is induced through hormonal injections.
The two are mixed in the laboratory and allowed to fertilize. They are then kept in incubation trays before releasing into earthen ponds.
"It requires a round the clock monitoring of temperature of water, oxygen levels, water flow and quality, feeding and nursery management. For this, the final year students are given the duty to maintain record in shifts. After ten days, the seeds are released in shallow earthen ponds. Once the seeds reach fingerling stage they can be given to farmers for further growth in fish ponds or farm ponds," said Ghatge.
At present the college produces about 80 lakh seeds of Rohu, Katla and Mrigal put together. But for Magur the college is producing 25,000 seeds to begin with this year. Dr Kalorey says that farmers in region are still not very aware about good practices. They prefer to buy spawn which is much cheaper compared to fingerlings not realizing that survival rate of this is very low. So the college is also trying to educate farmers.
The college has nine fish nurseries of 150 sq m, four rearing ponds of 500 sq m and two breeding ponds of 2800 and 1600 sq m.
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