Genetic parameters of product quality and hepatic metabolism in fattened mule ducks

Marie-Etancelin Christelle, Basso B., Davail S., Gontier K., Fernandez Xavier, Vitezica Zulma G., Bastianelli Denis, Baéza Elisabeth, Bernadet Marie-Dominique, Guy G., Brun J.M., Legarra Andrés. 2011. Genetic parameters of product quality and hepatic metabolism in fattened mule ducks. Journal of Animal Science, 89 (3) : pp. 669-679.

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Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Abstract : Genetic parameters of traits related to hepatic lipid metabolism, carcass composition, and product quality of overfed mule ducks were estimated on both parental lines of this hybrid: the common duck line for the maternal side and the Muscovy line for the paternal side. The originality of the statistical model was to include simultaneously the additive genetic effect of the common ducks and that of the Muscovy ducks, revealing a greater genetic determinism in common than in Muscovy. Plasma metabolic indicators (glucose, triglyceride, and cholesterol contents) were heritable, in particular at the end of the overfeeding period, and heritabilities increased with the overfeeding stage. Carcass composition traits were highly heritable in the common line, with values ranging from 0.15 for liver weight, 0.21 for carcass weight, and 0.25 for abdominal fat weight to 0.32 for breast muscle weight. Heritabilities of technological outputs were greater for the fatty liver (0.19 and 0.08, respectively, on common and Muscovy sides for liver melting rate) than for the pectoralis major muscle (between 0.02 and 0.05 on both parental sides for cooking losses). Fortunately, the processing industry is mainly facing problems in liver quality, such as too high of a melting rate, than in meat quality. The meat quality appraisal criteria (such as texture and cooking losses), usually dependent on pH and the rate of decline of pH, were also very lowly heritable. This study demonstrated that genetic determinism of meat quality and ability of overfeeding is not similar in the common population and in the Muscovy population; traits related to fattening, muscle development, and BW have heritability values from 2 to 4 times greater on the common line than on the Muscovy line, which is relevant for considering different selection strategies. (Résumé d'auteur)

Mots-clés Agrovoc : Canard, Canard de Barbarie, Génétique, Paramètre génétique, Amélioration des animaux, Anas, Foie, Abats, Viande de canard, Métabolisme des lipides, Composition chimique, Modèle mathématique, Hybride

Mots-clés géographiques Agrovoc : France

Mots-clés complémentaires : Anas platyrhynchos

Classification Agris : L52 - Animal physiology - Growth and development
L10 - Animal genetics and breeding
U10 - Computer science, mathematics and statistics
Q04 - Food composition

Champ stratégique Cirad : Axe 3 (2005-2013) - Alimentation accessible et de qualité

Auteurs et affiliations

  • Marie-Etancelin Christelle, INRA (FRA)
  • Basso B., INRA (FRA)
  • Davail S., UPPA (FRA)
  • Gontier K., UPPA (FRA)
  • Fernandez Xavier, ENSAT (FRA)
  • Vitezica Zulma G., ENSAT (FRA)
  • Bastianelli Denis, CIRAD-ES-UPR Systèmes d'élevage (FRA) ORCID: 0000-0002-6394-5920
  • Baéza Elisabeth, ITAVI (FRA)
  • Bernadet Marie-Dominique, INRA (FRA)
  • Guy G., INRA (FRA)
  • Brun J.M., INRA (FRA)
  • Legarra Andrés, INRA (FRA)

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