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, Cette synthèse a pour objectif de présenter l'état d'avancement des recherches sur ces méthodes alternatives. Les voies de synthèse et de stockage de lipides chez les oiseaux seront abordées ainsi que le comportement alimentaire et le métabolisme hépatique des oiseaux migrateurs, ayant permis de définir les bases biologiques des recherches menées sur la stéatose spontanée chez les palmipèdes domestiques. Les résultats des recherches conduites sur l'engraissement hépatique spontané des palmipèdes, les effecteurs de celui-ci et l'impact en terme de durabilité du système seront discutés. Enfin, plusieurs perspectives de recherche sur des leviers possibles tels que l'alimentation