Inbreeding Effects on Body Weight at Harvest Size and Grow-out Survival Rate in a Genetic Selected Population of Pacific White Shrimp Penaeus (Litopenaeus) vannamei
The objective of this study was to investigate the effect of inbreeding on body weight (BW) at harvest size (130 d of age) and grow‐out survival rate (SR) (65–130 d of age) in a nucleus breeding population of Penaeus (Litopenaeus) vannamei. An experiment was designed to generate inbred families the...
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Veröffentlicht in: | Journal of the World Aquaculture Society 2015-02, Vol.46 (1), p.53-60 |
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creator | de los Ríos-Pérez, Lidia Campos-Montes, Gabriel R. Martínez-Ortega, Alfonso Castillo-Juárez, Héctor Montaldo, Hugo H. |
description | The objective of this study was to investigate the effect of inbreeding on body weight (BW) at harvest size (130 d of age) and grow‐out survival rate (SR) (65–130 d of age) in a nucleus breeding population of Penaeus (Litopenaeus) vannamei. An experiment was designed to generate inbred families the product of sibling matings, as well as groups of families with different inbreeding coefficients in three successive generations. The families came from a broodstock line selected for growth and survival. Inbreeding coefficients varied between 0 and 60.4%. A total of 16,361 shrimp from 320 families were produced. Data were analyzed using mixed linear model methodology and restricted maximum likelihood methods. Estimated change on BW per 10% increase on the inbreeding coefficient was −2.19 ± 0.41% (P |
doi_str_mv | 10.1111/jwas.12169 |
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An experiment was designed to generate inbred families the product of sibling matings, as well as groups of families with different inbreeding coefficients in three successive generations. The families came from a broodstock line selected for growth and survival. Inbreeding coefficients varied between 0 and 60.4%. A total of 16,361 shrimp from 320 families were produced. Data were analyzed using mixed linear model methodology and restricted maximum likelihood methods. Estimated change on BW per 10% increase on the inbreeding coefficient was −2.19 ± 0.41% (P <0.001) relative to the mean of non‐inbred shrimp predicted from the model (19.63 g). Regression coefficient for grow‐out SR on inbreeding was not significant. Estimated change in SR per 10% increase on the inbreeding coefficient was −0.009 ± 0.006% (P = 0.108) relative to the mean of non‐inbred shrimp predicted from the model (81.72%). 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An experiment was designed to generate inbred families the product of sibling matings, as well as groups of families with different inbreeding coefficients in three successive generations. The families came from a broodstock line selected for growth and survival. Inbreeding coefficients varied between 0 and 60.4%. A total of 16,361 shrimp from 320 families were produced. Data were analyzed using mixed linear model methodology and restricted maximum likelihood methods. Estimated change on BW per 10% increase on the inbreeding coefficient was −2.19 ± 0.41% (P <0.001) relative to the mean of non‐inbred shrimp predicted from the model (19.63 g). Regression coefficient for grow‐out SR on inbreeding was not significant. Estimated change in SR per 10% increase on the inbreeding coefficient was −0.009 ± 0.006% (P = 0.108) relative to the mean of non‐inbred shrimp predicted from the model (81.72%). 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An experiment was designed to generate inbred families the product of sibling matings, as well as groups of families with different inbreeding coefficients in three successive generations. The families came from a broodstock line selected for growth and survival. Inbreeding coefficients varied between 0 and 60.4%. A total of 16,361 shrimp from 320 families were produced. Data were analyzed using mixed linear model methodology and restricted maximum likelihood methods. Estimated change on BW per 10% increase on the inbreeding coefficient was −2.19 ± 0.41% (P <0.001) relative to the mean of non‐inbred shrimp predicted from the model (19.63 g). Regression coefficient for grow‐out SR on inbreeding was not significant. Estimated change in SR per 10% increase on the inbreeding coefficient was −0.009 ± 0.006% (P = 0.108) relative to the mean of non‐inbred shrimp predicted from the model (81.72%). It is important to control inbreeding level in breeding programs.</abstract><cop>Hoboken, USA</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1111/jwas.12169</doi><tpages>8</tpages></addata></record> |
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subjects | Decapoda Litopenaeus vannamei Penaeus |
title | Inbreeding Effects on Body Weight at Harvest Size and Grow-out Survival Rate in a Genetic Selected Population of Pacific White Shrimp Penaeus (Litopenaeus) vannamei |
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