Potential for Genetic Improvement of the Main Slaughter Yields in Common Carp With in vivo Morphological Predictors
Common carp is a major aquaculture species worldwide, commonly sold alive but also as processed headless carcass or filets. However, recording of processing yields is impossible on live breeding candidates, and alternatives for genetic improvement are either sib selection based on slaughtered fish,...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2018-07-01
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| Series: | Frontiers in Genetics |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fgene.2018.00283/full |
| _version_ | 1830451722711990272 |
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| author | Martin Prchal Jérôme Bugeon Marc Vandeputte Marc Vandeputte Antti Kause Alain Vergnet Jinfeng Zhao David Gela Lucie Genestout Anastasia Bestin Pierrick Haffray Martin Kocour |
| author_facet | Martin Prchal Jérôme Bugeon Marc Vandeputte Marc Vandeputte Antti Kause Alain Vergnet Jinfeng Zhao David Gela Lucie Genestout Anastasia Bestin Pierrick Haffray Martin Kocour |
| author_sort | Martin Prchal |
| collection | DOAJ |
| description | Common carp is a major aquaculture species worldwide, commonly sold alive but also as processed headless carcass or filets. However, recording of processing yields is impossible on live breeding candidates, and alternatives for genetic improvement are either sib selection based on slaughtered fish, or indirect selection on correlated traits recorded in vivo. Morphological predictors that can be measured on live fish and that correlate with real slaughter yields hence remain a possible alternative. To quantify the power of morphological predictors for genetic improvement of yields, we estimated genetic parameters of slaughter yields and various predictors in 3-year-old common carp reared communally under semi-intensive pond conditions. The experimental stock was established by a partial factorial design of 20 dams and 40 sires, and 1553 progenies were assigned to their parents using 12 microsatellites. Slaughter yields were highly heritable (h2 = 0.46 for headless carcass yield, 0.50 for filet yield) and strongly genetically correlated with each other (rg = 0.96). To create morphological predictors, external (phenotypes, 2D digitization) and internal measurements (ultrasound imagery) were recorded and combined by multiple linear regression to predict slaughter yields. The accuracy of the phenotypic prediction was high for headless carcass yield (R2 = 0.63) and intermediate for filet yield (R2 = 0.49). Interestingly, heritability of predicted slaughter yields (0.48–0.63) was higher than that of the real yields to predict, and had high genetic correlations with the real yields (rg = 0.84–0.88). In addition, both predicted yields were highly phenotypically and genetically correlated with each other (0.95 for both), suggesting that using predicted headless carcass yield in a breeding program would be a good way to also improve filet yield. Besides, two individual predictors (P1 and P2) included in the prediction models and two simple internal measurements (E4 and E23) exhibited intermediate to high heritability estimates (h2 = 0.34 – 0.72) and significant genetic correlations to the slaughter yields (rg = |0.39 – 0.83|). The results show that there is a solid potential for genetic improvement of slaughter yields by selecting for predictor traits recorded on live breeding candidates of common carp. |
| first_indexed | 2024-12-21T08:37:18Z |
| format | Article |
| id | doaj.art-4f3d77fa8f334f9ab98ccfecc87a555f |
| institution | Directory Open Access Journal |
| issn | 1664-8021 |
| language | English |
| last_indexed | 2024-12-21T08:37:18Z |
| publishDate | 2018-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Genetics |
| spelling | doaj.art-4f3d77fa8f334f9ab98ccfecc87a555f2022-12-21T19:10:02ZengFrontiers Media S.A.Frontiers in Genetics1664-80212018-07-01910.3389/fgene.2018.00283390381Potential for Genetic Improvement of the Main Slaughter Yields in Common Carp With in vivo Morphological PredictorsMartin Prchal0Jérôme Bugeon1Marc Vandeputte2Marc Vandeputte3Antti Kause4Alain Vergnet5Jinfeng Zhao6David Gela7Lucie Genestout8Anastasia Bestin9Pierrick Haffray10Martin Kocour11Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in České Budějovice, Vodňany, CzechiaLPGP, INRA, Rennes, FranceGABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, FranceIfremer, Palavas-les-Flots, FranceBiometrical Genetics, Natural Resources Institute Finland (Luke), Jokioinen, FinlandIfremer, Palavas-les-Flots, FranceFaculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in České Budějovice, Vodňany, CzechiaFaculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in České Budějovice, Vodňany, CzechiaLABOGENA-DNA, Jouy-en-Josas, FranceSYSAAF Section Aquacole, Rennes, FranceSYSAAF Section Aquacole, Rennes, FranceFaculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in České Budějovice, Vodňany, CzechiaCommon carp is a major aquaculture species worldwide, commonly sold alive but also as processed headless carcass or filets. However, recording of processing yields is impossible on live breeding candidates, and alternatives for genetic improvement are either sib selection based on slaughtered fish, or indirect selection on correlated traits recorded in vivo. Morphological predictors that can be measured on live fish and that correlate with real slaughter yields hence remain a possible alternative. To quantify the power of morphological predictors for genetic improvement of yields, we estimated genetic parameters of slaughter yields and various predictors in 3-year-old common carp reared communally under semi-intensive pond conditions. The experimental stock was established by a partial factorial design of 20 dams and 40 sires, and 1553 progenies were assigned to their parents using 12 microsatellites. Slaughter yields were highly heritable (h2 = 0.46 for headless carcass yield, 0.50 for filet yield) and strongly genetically correlated with each other (rg = 0.96). To create morphological predictors, external (phenotypes, 2D digitization) and internal measurements (ultrasound imagery) were recorded and combined by multiple linear regression to predict slaughter yields. The accuracy of the phenotypic prediction was high for headless carcass yield (R2 = 0.63) and intermediate for filet yield (R2 = 0.49). Interestingly, heritability of predicted slaughter yields (0.48–0.63) was higher than that of the real yields to predict, and had high genetic correlations with the real yields (rg = 0.84–0.88). In addition, both predicted yields were highly phenotypically and genetically correlated with each other (0.95 for both), suggesting that using predicted headless carcass yield in a breeding program would be a good way to also improve filet yield. Besides, two individual predictors (P1 and P2) included in the prediction models and two simple internal measurements (E4 and E23) exhibited intermediate to high heritability estimates (h2 = 0.34 – 0.72) and significant genetic correlations to the slaughter yields (rg = |0.39 – 0.83|). The results show that there is a solid potential for genetic improvement of slaughter yields by selecting for predictor traits recorded on live breeding candidates of common carp.https://www.frontiersin.org/article/10.3389/fgene.2018.00283/fullheritability estimatesgenetic correlationsindirect selectionmorphological landmarksslaughter yieldsultrasound imagery |
| spellingShingle | Martin Prchal Jérôme Bugeon Marc Vandeputte Marc Vandeputte Antti Kause Alain Vergnet Jinfeng Zhao David Gela Lucie Genestout Anastasia Bestin Pierrick Haffray Martin Kocour Potential for Genetic Improvement of the Main Slaughter Yields in Common Carp With in vivo Morphological Predictors Frontiers in Genetics heritability estimates genetic correlations indirect selection morphological landmarks slaughter yields ultrasound imagery |
| title | Potential for Genetic Improvement of the Main Slaughter Yields in Common Carp With in vivo Morphological Predictors |
| title_full | Potential for Genetic Improvement of the Main Slaughter Yields in Common Carp With in vivo Morphological Predictors |
| title_fullStr | Potential for Genetic Improvement of the Main Slaughter Yields in Common Carp With in vivo Morphological Predictors |
| title_full_unstemmed | Potential for Genetic Improvement of the Main Slaughter Yields in Common Carp With in vivo Morphological Predictors |
| title_short | Potential for Genetic Improvement of the Main Slaughter Yields in Common Carp With in vivo Morphological Predictors |
| title_sort | potential for genetic improvement of the main slaughter yields in common carp with in vivo morphological predictors |
| topic | heritability estimates genetic correlations indirect selection morphological landmarks slaughter yields ultrasound imagery |
| url | https://www.frontiersin.org/article/10.3389/fgene.2018.00283/full |
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