Developing breeding objectives for beef cattle production 2. Biological and economic values of growth and carcass traits in Japan

allaitement beef beef cattle birth weight body weight bovin de boucherie breeding methods carcass composition carne de res composition de la carcasse crecimiento croissance efficiency eficacia farming systems feedlot feedlots ganado de carne growth hatos herds japan japon lactancia marbling meat production modele modelos models peso al destete peso al nacimiento peso corporal poids au sevrage poids corporel production de viande suckling troupeau viande bovine weaning weight