QTL detection for excretion traits in broilers

Creators: Mignon-Grasteau, Sandrine; Carré, Bernard; Gabriel, Irène; Rideau, Nicole; Chantry-Darmon, Céline; Boscher, Marie Yvonne; Bastianelli, Denis; Sellier, Nadine; Chabault-Dhuit, Marie; Le Bihan-Duval, Elisabeth; Narcy, Agnès

Others:: Unité de Recherches Avicoles (URA) ; Institut National de la Recherche Agronomique (INRA); Laboratoire d'Analyse Génétique pour les Espèces Animales (LABOGENA) ; Institut National de la Recherche Agronomique (INRA); Direction des Ressources Humaines et du Développement Durable (DRHDD) ; Institut National de la Recherche Agronomique (INRA); Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad); Institut Sophia Agrobiotech (ISA) ; Institut National de la Recherche Agronomique (INRA)-Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS); ANR GENOM-BTV009 CHIEF

Description

Digestive efficiency (DE) has a large impact on excretion traits and on environmental impact of poultry production. A F2 cross between 2 lines of chickens divergently selected on DE has been used to detect QTL. A total of 865 birds were measured for the quantity of fresh and dry excreta as raw values (FEW, DEW) or as relative to consumption values (FEWC, DEWC), for water content (WC), pH (PHE) and nitrogen to phosphorus content ratio (NP) of excreta, and for pH of gizzard and jejunum contents (PHG, PHJ). Eleven QTL were found for: DEW (GGA19, GGA26), FEWC (GGA8), DEWC (GGA16), NP (GGA11, GGA26), WC (GGA28), PHG (GGA2, GGA16, GGA27), PHJ (GGA19). On chromosomes 16 and 27, QTL co-localized with QTL for DE. On chromosomes 8, 16 and 26, QTLs for excretion traits co-localized with QTLs for relative intestine length

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QTL detection for excretion traits in broilers

Description

Abstract

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