Flesh characteristics: Estimation of genetic parameters and correlated responses to selection for growth rate in the GIFT strain
Flesh characteristics comprising chemical composition (protein, fat and moisture percentages and pH) as well as a sensory attribute (colour) were measured in 1951 fillet samples from two generations of two populations (a selection line, selected for increased harvest weight, and a control line, sele...
| Autores principales: | , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Hindawi Limited
2016
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/65125 |
| _version_ | 1855519290836385792 |
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| author | Hamzah, A. Nguyen Hong Nguyen Mekkawy, Wagdy Ponzoni, R.W. Hooi Ling Khaw Hoong Yip Yee Abu Bakar, Khairul Rizal Mohd Nor, S.A. |
| author_browse | Abu Bakar, Khairul Rizal Hamzah, A. Hooi Ling Khaw Hoong Yip Yee Mekkawy, Wagdy Mohd Nor, S.A. Nguyen Hong Nguyen Ponzoni, R.W. |
| author_facet | Hamzah, A. Nguyen Hong Nguyen Mekkawy, Wagdy Ponzoni, R.W. Hooi Ling Khaw Hoong Yip Yee Abu Bakar, Khairul Rizal Mohd Nor, S.A. |
| author_sort | Hamzah, A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Flesh characteristics comprising chemical composition (protein, fat and moisture percentages and pH) as well as a sensory attribute (colour) were measured in 1951 fillet samples from two generations of two populations (a selection line, selected for increased harvest weight, and a control line, selected for average breeding values for harvest weight) of the genetically improved farmed tilapia (GIFT) strain of Nile tilapia. These data were jointly analysed with 5331 harvest weight records from three generations to estimate genetic parameters and correlated selection responses. Multiple trait animal models were used in the analyses. The potential for correlated responses was evaluated by estimating heritabilities and genetic correlations between body traits (weight, length, depth and width) and fillet traits (weight and yield) with the above mentioned flesh characteristics. The heritabilities for protein%, fat% and colour were low (0.06–0.11), whereas for moisture% and pH they were moderate (0.15–0.20). Genetic correlations among some flesh characteristics (moisture% with protein%, fat% and pH and with fat%) as well as between body and fillet traits with flesh characteristics, were significantly different from zero but low (−0.34 to 0.31). Correlated responses were evaluated by comparing the least squares means between the Selection and Control lines. Our results indicate that selection for high growth increased harvest weight in the Selection line relative to the Control line but it did not change the flesh characteristics of the GIFT strain. |
| format | Journal Article |
| id | CGSpace65125 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Hindawi Limited |
| publisherStr | Hindawi Limited |
| record_format | dspace |
| spelling | CGSpace651252024-08-27T10:35:15Z Flesh characteristics: Estimation of genetic parameters and correlated responses to selection for growth rate in the GIFT strain Hamzah, A. Nguyen Hong Nguyen Mekkawy, Wagdy Ponzoni, R.W. Hooi Ling Khaw Hoong Yip Yee Abu Bakar, Khairul Rizal Mohd Nor, S.A. research fish animal products Flesh characteristics comprising chemical composition (protein, fat and moisture percentages and pH) as well as a sensory attribute (colour) were measured in 1951 fillet samples from two generations of two populations (a selection line, selected for increased harvest weight, and a control line, selected for average breeding values for harvest weight) of the genetically improved farmed tilapia (GIFT) strain of Nile tilapia. These data were jointly analysed with 5331 harvest weight records from three generations to estimate genetic parameters and correlated selection responses. Multiple trait animal models were used in the analyses. The potential for correlated responses was evaluated by estimating heritabilities and genetic correlations between body traits (weight, length, depth and width) and fillet traits (weight and yield) with the above mentioned flesh characteristics. The heritabilities for protein%, fat% and colour were low (0.06–0.11), whereas for moisture% and pH they were moderate (0.15–0.20). Genetic correlations among some flesh characteristics (moisture% with protein%, fat% and pH and with fat%) as well as between body and fillet traits with flesh characteristics, were significantly different from zero but low (−0.34 to 0.31). Correlated responses were evaluated by comparing the least squares means between the Selection and Control lines. Our results indicate that selection for high growth increased harvest weight in the Selection line relative to the Control line but it did not change the flesh characteristics of the GIFT strain. 2016-07 2015-04-19T10:42:46Z 2015-04-19T10:42:46Z Journal Article https://hdl.handle.net/10568/65125 en Open Access Hindawi Limited Hamzah, A., Nguyen Hong Nguyen, Mekkawy, W., Ponzoni, R.W., Hooi Ling Khaw, Hoong Yip Yee, Abu Bakar, K.R. and Mohd Nor, S.A. 2014. Flesh characteristics: Estimation of genetic parameters and correlated responses to selection for growth rate in the GIFT strain. Aquaculture Research |
| spellingShingle | research fish animal products Hamzah, A. Nguyen Hong Nguyen Mekkawy, Wagdy Ponzoni, R.W. Hooi Ling Khaw Hoong Yip Yee Abu Bakar, Khairul Rizal Mohd Nor, S.A. Flesh characteristics: Estimation of genetic parameters and correlated responses to selection for growth rate in the GIFT strain |
| title | Flesh characteristics: Estimation of genetic parameters and correlated responses to selection for growth rate in the GIFT strain |
| title_full | Flesh characteristics: Estimation of genetic parameters and correlated responses to selection for growth rate in the GIFT strain |
| title_fullStr | Flesh characteristics: Estimation of genetic parameters and correlated responses to selection for growth rate in the GIFT strain |
| title_full_unstemmed | Flesh characteristics: Estimation of genetic parameters and correlated responses to selection for growth rate in the GIFT strain |
| title_short | Flesh characteristics: Estimation of genetic parameters and correlated responses to selection for growth rate in the GIFT strain |
| title_sort | flesh characteristics estimation of genetic parameters and correlated responses to selection for growth rate in the gift strain |
| topic | research fish animal products |
| url | https://hdl.handle.net/10568/65125 |
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