Les rations d’engraissement de taurillons : Eléments d’évaluation de la durabilité
Résumé
Different criteria of sustainability were compared to evaluate three bull-fattening systems using contrasted diets based on hay, maize silage or concentrate. Environmental impacts were determined using life cycle assessment, economic margin was evaluated from feeding costs and animal price, and animal welfare related to diet was appreciated through digestive discomfort and health value of produced meat through fatty acid composition. The results show that diet ranking depends on the criteria considered, and that the mode of expression of the criteria is of major importance.