Establishment of satellite nucleus of genetically improved farmed tilapia (GIFT strain) in Bangladesh
The aim of this study was to evaluate growth performance of the GIFT (GeneticallyImproved Farmed Tilapia) strain after one generation of selection for increased bodyweight at Bangladesh Fisheries Research Institute. Founder stock comprised of 30families having 300 individuals of the GIFT strain were introduced from Malaysiathrough \X!orldFish Center in March 2005. The founder stock was reared in 100 m2hapa for three months and then individually tagged using Passive IntegratedTransponder (PIT) at the weight between 30 and 40 g. After tagging, all the fish werecommunally grown out in pond until harvest. Breeding value for body weight wasestimated using SAS and ASREML ranging from 4.17 to 9.70 g for males and 4.24 to9.36 g for females. The best 40 females and 40 males from the founder stock were thenselected to produce progeny of the first generation (F-1). From each family 25 femaleand 25 male fingerlings were sampled and tagged using PIT. A total of 2,000 taggedfish from 40 families were stocked in a pond (1000 m2) for a continuation of theselection program. In addition, surplus fish after tagging were also reared together withprogeny of the founder stock in cistern ecology for growth evaluation. The mean weightof the F-1 generation of GIFT fish was 7.2% greater than that of the founderpopulation (non selected population).
| Main Authors: | , , , , , |
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| Format: | article biblioteca |
| Language: | English |
| Published: |
2008
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| Subjects: | Biology, Fisheries, Satellite nucleus, Genetically Improved Farmed Tilapia (GIFT), |
| Online Access: | http://hdl.handle.net/1834/33210 |
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