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No Thumbnail AvailableProjectManual on seed production of carps
Institutional Strengthening in the Fisheries Sector, Bangladesh
1992Also available in:
No results found.Massive stocking of the open waters with nursery raised fingerlings and large-scale expansion of fish culture are two important strategies currently adopted in Bangladesh for increasing fish production. As a matter of policy, large size fingerling is being used for both open water stocking as well as pond aquaculture. Implementation of Asian Development Bank and World Bank sponsored Second and Third Fisheries Projects which has started stocking of fingerling in flood plains for rearing of mark et size fish has created a new demand for carp seed. These new projects stipulate that the number of 1012 cm size fingerling to be released in open waters every year about 400500 million. To achieve this target, private sector should significantly increase its fingerling production for supply to these projects. Moreover, technology of fingerling rearing as used now, in private sector, should be changed because for stocking in the natural waters, the fingerling should be reared at least up to 101 2 cm size. In some areas of the country (particularly in Jessore) private farmers are using effective methods and getting excellent results in producing of small size fingerling in multicrop system, but multicycle production of large size fingerling is not carried out at any part of the country. Moreover, in general, the present fry/fingerling production technology is characterized by inadequate pond preparation, improper manuring and supply of poor quality feed. (Production data of fish seed producers of the country are given in Table 1.) Further, the presently used management methods are not suitable for full utilization of production capacity of broodfish. With the improvement of broodfish preparation methodology the breeding season may be prolonged, facilitating multicycle production of fish seed. -
No Thumbnail AvailableProjectReport of the Training course on seabass spawning and larval rearing - Songkhla, Thailand - 1 to 20 June 1982
South China Sea Fisheries Development and Coordinating Programme
1982Also available in:
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No Thumbnail AvailableBook (series)The artificial propagation of warm-water finfishes: a manual for extension 1980
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No results found.This Manual deals with the artificial propagation of warmwater finfishes. Being primarily meant for the extension workers and aquaculture training institutions, it is profusely illustrated. It outlines the basic biological aspects of reproduction in fish and presents the various techniques being used for the collection of fertilized eggs, the artificial fertilization of eggs and the subsequent rearing of larvae and fry. Hatchery and nursery facilities, including equipment and tools, required to set-up a medium-size fish seed production and distribution centre are also included. The various methods of transporting fish eggs, larvae, fry and fingerlings are discussed. The methods of collection and preservation of fish pituitary glands and the dosage of pituitary extracts used for inducing successful spawning in various warmwater fishes are dealt with. Finally, artificial propagation techniques for some commercially important warmwater fishes are presented.
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