Establishment of satellite nucleus of genetically improved farmed tilapia (GIFT strain) in Bangladesh
| Autor: | Kohinoor, A.H.M., Islam, M.S., Ponzoni, R.W., Nguyen, N.H., Ahammed, S.U., Hussain, M.G. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
lcsh:LC8-6691
lcsh:Special aspects of education lcsh:Mathematics Satellite nucleus Fisheries Generalización lcsh:QA1-939 lcsh:LB5-3640 lcsh:Theory and practice of education Procesos de justificación Geometría (matemáticas superiores) Genetically Improved Farmed Tilapia (GIFT) Biology Teoría de conjuntos |
| Zdroj: | Bangladesh Fisheries Research Institute Revista de Educación Matemática, Vol 30, Iss 3 (2015) |
| Popis: | The aim of this study was to evaluate growth performance of the GIFT (Genetically Improved Farmed Tilapia) strain after one generation of selection for increased body weight at Bangladesh Fisheries Research Institute. Founder stock comprised of 30 families having 300 individuals of the GIFT strain were introduced from Malaysia through \X!orldFish Center in March 2005. The founder stock was reared in 100 m2 hapa for three months and then individually tagged using Passive Integrated Transponder (PIT) at the weight between 30 and 40 g. After tagging, all the fish were communally grown out in pond until harvest. Breeding value for body weight was estimated using SAS and ASREML ranging from 4.17 to 9.70 g for males and 4.24 to 9.36 g for females. The best 40 females and 40 males from the founder stock were then selected to produce progeny of the first generation (F-1). From each family 25 female and 25 male fingerlings were sampled and tagged using PIT. A total of 2,000 tagged fish from 40 families were stocked in a pond (1000 m2) for a continuation of the selection program. In addition, surplus fish after tagging were also reared together with progeny of the founder stock in cistern ecology for growth evaluation. The mean weight of the F-1 generation of GIFT fish was 7.2% greater than that of the founder population (non selected population). |
| Databáze: | OpenAIRE |
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