Correlated responses in tissue weights measured in vivo by computer tomography in Dorset Down sheep selected for lean tissue growth

animal tissues body weight gain génétique genetic gain index de sélection lean body mass masa corporal delgada masse maigre de l'organisme mejora genética new zealand nouvelle-zélande nueva zelandia ovin ovinos peso corporal poids corporel radiografía radiographie radiography selection index sheep tejidos animales tissu animal índice de selección