Genetic parameters for survival during the grow-out period in the GIFT strain of Nile tilapia (Oreochromis niloticus) and correlated response to selection for harvest weight
The aims of this study were the estimation of genetic parameters for survival rate from tagging until harvest and the evaluation of the correlated response in survival rate to selection for harvest weight in the genetically improved farmed tilapia (GIFT) strain. The heritability for survival rate wa...
| Autores principales: | , , , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Hindawi Limited
2017
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/72554 |
| _version_ | 1855530899762839552 |
|---|---|
| author | Hamzah, A. Mekkawy, Wagdy Hooi Ling Khaw Nguyen Hong Nguyen Hoong Yip Yee Abu Bakar, Khairul Rizal Nor, S.A.M. Ponzoni, R.W. |
| author_browse | Abu Bakar, Khairul Rizal Hamzah, A. Hooi Ling Khaw Hoong Yip Yee Mekkawy, Wagdy Nguyen Hong Nguyen Nor, S.A.M. Ponzoni, R.W. |
| author_facet | Hamzah, A. Mekkawy, Wagdy Hooi Ling Khaw Nguyen Hong Nguyen Hoong Yip Yee Abu Bakar, Khairul Rizal Nor, S.A.M. Ponzoni, R.W. |
| author_sort | Hamzah, A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The aims of this study were the estimation of genetic parameters for survival rate from tagging until harvest and the evaluation of the correlated response in survival rate to selection for harvest weight in the genetically improved farmed tilapia (GIFT) strain. The heritability for survival rate was low (0.038), and so was its genetic correlation with harvest weight (0.065), suggesting that selecting for the latter trait would have had no effect on survival. The calculation of the probability of survival by spawning season and line, fitting a model that included the random effects of individual animal and common environment, confirmed this prediction. There were very small and variable between line differences in the probability of survival, which generally favoured the selection line. We conclude that the focus of the GIFT programme on improving harvest weight was not detrimental to the survival of the fish during the grow-out phase. |
| format | Journal Article |
| id | CGSpace72554 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Hindawi Limited |
| publisherStr | Hindawi Limited |
| record_format | dspace |
| spelling | CGSpace725542024-08-27T10:36:26Z Genetic parameters for survival during the grow-out period in the GIFT strain of Nile tilapia (Oreochromis niloticus) and correlated response to selection for harvest weight Hamzah, A. Mekkawy, Wagdy Hooi Ling Khaw Nguyen Hong Nguyen Hoong Yip Yee Abu Bakar, Khairul Rizal Nor, S.A.M. Ponzoni, R.W. fishes research genetic correlation The aims of this study were the estimation of genetic parameters for survival rate from tagging until harvest and the evaluation of the correlated response in survival rate to selection for harvest weight in the genetically improved farmed tilapia (GIFT) strain. The heritability for survival rate was low (0.038), and so was its genetic correlation with harvest weight (0.065), suggesting that selecting for the latter trait would have had no effect on survival. The calculation of the probability of survival by spawning season and line, fitting a model that included the random effects of individual animal and common environment, confirmed this prediction. There were very small and variable between line differences in the probability of survival, which generally favoured the selection line. We conclude that the focus of the GIFT programme on improving harvest weight was not detrimental to the survival of the fish during the grow-out phase. 2017-01 2016-03-10T14:53:09Z 2016-03-10T14:53:09Z Journal Article https://hdl.handle.net/10568/72554 en Open Access Hindawi Limited Hamzah, A., Mekkawy, W., Hooi Ling Khaw, Nguyen Hong Nguyen, Hoong Yip Yee, Abu Bakar, K.R., Nor, S.A.M. and Ponzoni, R.W. 2015. Genetic parameters for survival during the grow-out period in the GIFT strain of Nile tilapia (Oreochromis niloticus) and correlated response to selection for harvest weight. Aquaculture Research |
| spellingShingle | fishes research genetic correlation Hamzah, A. Mekkawy, Wagdy Hooi Ling Khaw Nguyen Hong Nguyen Hoong Yip Yee Abu Bakar, Khairul Rizal Nor, S.A.M. Ponzoni, R.W. Genetic parameters for survival during the grow-out period in the GIFT strain of Nile tilapia (Oreochromis niloticus) and correlated response to selection for harvest weight |
| title | Genetic parameters for survival during the grow-out period in the GIFT strain of Nile tilapia (Oreochromis niloticus) and correlated response to selection for harvest weight |
| title_full | Genetic parameters for survival during the grow-out period in the GIFT strain of Nile tilapia (Oreochromis niloticus) and correlated response to selection for harvest weight |
| title_fullStr | Genetic parameters for survival during the grow-out period in the GIFT strain of Nile tilapia (Oreochromis niloticus) and correlated response to selection for harvest weight |
| title_full_unstemmed | Genetic parameters for survival during the grow-out period in the GIFT strain of Nile tilapia (Oreochromis niloticus) and correlated response to selection for harvest weight |
| title_short | Genetic parameters for survival during the grow-out period in the GIFT strain of Nile tilapia (Oreochromis niloticus) and correlated response to selection for harvest weight |
| title_sort | genetic parameters for survival during the grow out period in the gift strain of nile tilapia oreochromis niloticus and correlated response to selection for harvest weight |
| topic | fishes research genetic correlation |
| url | https://hdl.handle.net/10568/72554 |
| work_keys_str_mv | AT hamzaha geneticparametersforsurvivalduringthegrowoutperiodinthegiftstrainofniletilapiaoreochromisniloticusandcorrelatedresponsetoselectionforharvestweight AT mekkawywagdy geneticparametersforsurvivalduringthegrowoutperiodinthegiftstrainofniletilapiaoreochromisniloticusandcorrelatedresponsetoselectionforharvestweight AT hooilingkhaw geneticparametersforsurvivalduringthegrowoutperiodinthegiftstrainofniletilapiaoreochromisniloticusandcorrelatedresponsetoselectionforharvestweight AT nguyenhongnguyen geneticparametersforsurvivalduringthegrowoutperiodinthegiftstrainofniletilapiaoreochromisniloticusandcorrelatedresponsetoselectionforharvestweight AT hoongyipyee geneticparametersforsurvivalduringthegrowoutperiodinthegiftstrainofniletilapiaoreochromisniloticusandcorrelatedresponsetoselectionforharvestweight AT abubakarkhairulrizal geneticparametersforsurvivalduringthegrowoutperiodinthegiftstrainofniletilapiaoreochromisniloticusandcorrelatedresponsetoselectionforharvestweight AT norsam geneticparametersforsurvivalduringthegrowoutperiodinthegiftstrainofniletilapiaoreochromisniloticusandcorrelatedresponsetoselectionforharvestweight AT ponzonirw geneticparametersforsurvivalduringthegrowoutperiodinthegiftstrainofniletilapiaoreochromisniloticusandcorrelatedresponsetoselectionforharvestweight |