title: Selection for adaptation to dietary shifts: towards sustainable breeding of carnivorous fish.
abstract: Genetic adaptation to dietary environments is a key process in the evolution of natural populations and is of great interest in animal breeding. In fish farming, the use of fish meal and fish oil has been widely challenged, leading to the rapidly increasing use of plant-based products in feed. However, high substitution rates impair fish health and growth in carnivorous species. We demonstrated that survival rate, mean body weight and biomass can be improved in rainbow trout (Oncorhynchus mykiss) after a single generation of selection for the ability to adapt to a totally plant-based diet (15.1%, 35.3% and 54.4%, respectively). Individual variability in the ability to adapt to major diet changes can be effectively used to promote fish welfare and a more sustainable aquaculture.
authors.affiliation: INRA, UMR1313 GABI Génétique Animale et Biologie Intégrative, Jouy-en-Josas, France. richard.leboucher@rennes.inra.fr
authors.forename: Richard
authors.initials: R
authors.lastname: Le Boucher
authors.forename: Mathilde
authors.initials: M
authors.lastname: Dupont-Nivet
authors.forename: Marc
authors.initials: M
authors.lastname: Vandeputte
authors.forename: Thierry
authors.initials: T
authors.lastname: Kerneïs
authors.forename: Lionel
authors.initials: L
authors.lastname: Goardon
authors.forename: Laurent
authors.initials: L
authors.lastname: Labbé
authors.forename: Béatrice
authors.initials: B
authors.lastname: Chatain
authors.forename: Marie Josée
authors.initials: MJ
authors.lastname: Bothaire
authors.forename: Laurence
authors.initials: L
authors.lastname: Larroquet
authors.forename: Françoise
authors.initials: F
authors.lastname: Médale
authors.forename: Edwige
authors.initials: E
authors.lastname: Quillet
mesh_terms: D000222:Adaptation, Physiological; D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D059001:Aquatic Organisms; D018533:Biomass; D001835:Body Weight; D001947:Breeding / Q000379:methods*; D060435:Carnivory / Q000502:physiology*; D003247:Conservation of Natural Resources / Q000379:methods*; D004032:Diet; D017686:Oncorhynchus mykiss / Q000235:genetics / Q000502:physiology*; D016019:Survival Analysis