On-farm trials of WorldFish Genetically Improved Rohu
Rohu Labeo rohita (Hamilton) is an economically and culturally significant aquaculture species in Bangladesh. However, until recently, genetically improved rohu strains have not been available to Bangladeshi farmers. In 2020, a multiplier population comprised of highly-ranked families from the third...
| Main Authors: | , , , , , , , , , , |
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| Format: | Conference Paper |
| Language: | Inglés |
| Published: |
Sylhet Agricultural University
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/127570 |
| _version_ | 1855537018471186432 |
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| author | Hamilton, Matthew Yeasin, Mohammed Alam, Md. Badrul Ali, Md. Rayhan Fakhruddin, Md. Islam, Md. Mazharul Barman, Benoy Shikuku, Kelvin Shelley, Colin Rossignoli, Cristiano Benzie, John |
| author_browse | Alam, Md. Badrul Ali, Md. Rayhan Barman, Benoy Benzie, John Fakhruddin, Md. Hamilton, Matthew Islam, Md. Mazharul Rossignoli, Cristiano Shelley, Colin Shikuku, Kelvin Yeasin, Mohammed |
| author_facet | Hamilton, Matthew Yeasin, Mohammed Alam, Md. Badrul Ali, Md. Rayhan Fakhruddin, Md. Islam, Md. Mazharul Barman, Benoy Shikuku, Kelvin Shelley, Colin Rossignoli, Cristiano Benzie, John |
| author_sort | Hamilton, Matthew |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Rohu Labeo rohita (Hamilton) is an economically and culturally significant aquaculture
species in Bangladesh. However, until recently, genetically improved rohu strains have not
been available to Bangladeshi farmers. In 2020, a multiplier population comprised of
highly-ranked families from the third selected generation of the WorldFish Rohu Genetic
Improvement Program (the ‘G3 multiplier’) was released to commercial hatcheries as
spawn. This spawn was subsequently developed into broodstock by these hatcheries and
sale of this genetically improved product commenced in 2022. To assess the performance of
(i.e. estimate realised genetic gain in) the G3 multiplier population, on-farm trials were
undertaken in 2021-22. One pond, in each of 19 Bangladeshi semi-commercial farms, was
stocked with equal numbers of tagged fish from three treatments – the ‘G3 multiplier’, a
‘control’ strain (putatively genetically equivalent to unimproved riverine stocks) and a
‘commercial’ strain – and managed according to each farmer’s normal practices. At harvest,
the G3 multiplier had the greatest mean harvest weight in each of the 19 farms and
exhibited a mean realised genetic gain of 37% over the control. The growth rate of the
commercial strain was similar to that of the control. The greater harvest weight exhibited
by the G3-multiplier over the control and commercial strains in this study verified that the
WorldFish Rohu Genetic Improvement Program has attained a rate of genetic gain
comparable to that achieved in other family-based (i.e. pedigree-based) finfish programs
over its first three generations. |
| format | Conference Paper |
| id | CGSpace127570 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Sylhet Agricultural University |
| publisherStr | Sylhet Agricultural University |
| record_format | dspace |
| spelling | CGSpace1275702026-01-08T02:15:20Z On-farm trials of WorldFish Genetically Improved Rohu Hamilton, Matthew Yeasin, Mohammed Alam, Md. Badrul Ali, Md. Rayhan Fakhruddin, Md. Islam, Md. Mazharul Barman, Benoy Shikuku, Kelvin Shelley, Colin Rossignoli, Cristiano Benzie, John food security health nutrition genetic improvement rohu labeo rohita goal 1 no poverty goal 2 zero hunger goal 14 life below water fish g3 rohu trial realised genetic gain Rohu Labeo rohita (Hamilton) is an economically and culturally significant aquaculture species in Bangladesh. However, until recently, genetically improved rohu strains have not been available to Bangladeshi farmers. In 2020, a multiplier population comprised of highly-ranked families from the third selected generation of the WorldFish Rohu Genetic Improvement Program (the ‘G3 multiplier’) was released to commercial hatcheries as spawn. This spawn was subsequently developed into broodstock by these hatcheries and sale of this genetically improved product commenced in 2022. To assess the performance of (i.e. estimate realised genetic gain in) the G3 multiplier population, on-farm trials were undertaken in 2021-22. One pond, in each of 19 Bangladeshi semi-commercial farms, was stocked with equal numbers of tagged fish from three treatments – the ‘G3 multiplier’, a ‘control’ strain (putatively genetically equivalent to unimproved riverine stocks) and a ‘commercial’ strain – and managed according to each farmer’s normal practices. At harvest, the G3 multiplier had the greatest mean harvest weight in each of the 19 farms and exhibited a mean realised genetic gain of 37% over the control. The growth rate of the commercial strain was similar to that of the control. The greater harvest weight exhibited by the G3-multiplier over the control and commercial strains in this study verified that the WorldFish Rohu Genetic Improvement Program has attained a rate of genetic gain comparable to that achieved in other family-based (i.e. pedigree-based) finfish programs over its first three generations. 2022-09-16 2023-01-19T14:35:47Z 2023-01-19T14:35:47Z Conference Paper https://hdl.handle.net/10568/127570 en https://hdl.handle.net/10568/126606 https://hdl.handle.net/20.500.12348/5350 Open Access application/pdf application/pdf Sylhet Agricultural University Matthew Hamilton, Mohammed Yeasin, Md. Badrul Alam, Md. Rayhan Ali, Md. Fakhruddin, Md. Mazharul Islam, Benoy Barman, Kelvin Shikuku, Colin Shelley, Cristiano Rossignoli, John Benzie. (16/9/2022). On-farm trials of WorldFish Genetically Improved Rohu. Sylhet, Bangladesh. |
| spellingShingle | food security health nutrition genetic improvement rohu labeo rohita goal 1 no poverty goal 2 zero hunger goal 14 life below water fish g3 rohu trial realised genetic gain Hamilton, Matthew Yeasin, Mohammed Alam, Md. Badrul Ali, Md. Rayhan Fakhruddin, Md. Islam, Md. Mazharul Barman, Benoy Shikuku, Kelvin Shelley, Colin Rossignoli, Cristiano Benzie, John On-farm trials of WorldFish Genetically Improved Rohu |
| title | On-farm trials of WorldFish Genetically Improved Rohu |
| title_full | On-farm trials of WorldFish Genetically Improved Rohu |
| title_fullStr | On-farm trials of WorldFish Genetically Improved Rohu |
| title_full_unstemmed | On-farm trials of WorldFish Genetically Improved Rohu |
| title_short | On-farm trials of WorldFish Genetically Improved Rohu |
| title_sort | on farm trials of worldfish genetically improved rohu |
| topic | food security health nutrition genetic improvement rohu labeo rohita goal 1 no poverty goal 2 zero hunger goal 14 life below water fish g3 rohu trial realised genetic gain |
| url | https://hdl.handle.net/10568/127570 |
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