Estimation of genetic gains in muscovy duck selected for body weight at ten weeks of age in Taiwan

Hu Y.H., Poivey Jean-Paul, Rouvier Roger, Huang A.J.F., Wang C.T., Tai Chein. 2002. Estimation of genetic gains in muscovy duck selected for body weight at ten weeks of age in Taiwan. In : 7th World congress on genetics applied to livestock production. Pig breeding. Poultry and rabbit breeding. Horse breeding. Fish and shell-fish breeding. Breeding of non-conventional or regional species. Reproduction. INRA-Centre de recherche de Toulouse, CIRAD. Paris : INRA, pp. 269-272. World Congress on Genetics Applied to Livestock Production. 7, Montpellier, France, 19 August 2002/23 August 2002.

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Abstract : One Muscovy line (L302) was created at the Ilan Branch Institute of the Taiwan Livestock Research Institute (Duck Research Center, DRC) in Taiwan since 1984 to genetically improve the growth performance (Tai, 1986). A mild selection pressure was applied on individual phenotypic values of body weight at 10 weeks of age. From generations 0 to 8 (G0 to G8), body weight at 10 and 18 weeks of age, and the feather length at 10 weeks of age in male and female ducks (BW 10m, BW 10f, BW 18m, BW 18f, FL 10m, FL 10f, respectively) were measured. Using the genetic parameters of these traits estimated in the base population the genetic trends over the eight generations of selection were calculated (Hu et al., 1999). Taiwan is a subtropical island and most of duck houses are opened or in semi -confinement. The climatic effect was supposed to be important. A control line allows to take into account the environmental variations to estimate the selection response (Hill, 1972). The use of BLUP breeding values could increase the efficiency of the selection. The selection program was modified by using the BLUP animal model for predicting additive genetic value instead of phenotypic value as selection criterion, and by creating a control line since the G8 in 1997. The goal of this study was thus to analyze the response to selection for an increased body weights at 10 weeks of age in the first three generations of the selection experiment, Selection response, predicted genetic response and genetic trends were calculated and discussed. (Résumé d'auteur)

Mots-clés Agrovoc : Génétique, Performance animale, Croissance, Choix des espèces, Canard

Mots-clés géographiques Agrovoc : Taïwan

Classification Agris : L10 - Animal genetics and breeding

Auteurs et affiliations

  • Hu Y.H., Taiwan Livestock Research Institute (TWN)
  • Poivey Jean-Paul, CIRAD-EMVT-PPA (FRA)
  • Rouvier Roger, INRA (FRA)
  • Huang A.J.F., Taiwan Livestock Research Institute (TWN)
  • Wang C.T., Taiwan Livestock Research Institute (TWN)
  • Tai Chein, National Cheng Kung University Tainan (TWN)

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