Growth performance of sheep fed on mixed diets containing shrubs (Acacia, Atriplex, Cactus) and nitrogen/energy supplementation

acacia animal production arbre arbuste arbustos arid zones atriplex body weight composition globale compound feeds feed production gain de poids ganancia de peso hordeum vulgare matorral multipurpose trees nutritive value ovin ovinos peso corporal piensos compuestos plant production poids corporel production aliment pour animaux production animale proximate composition scrub sheep shrubs trees tunisia tunisie uses usos utilisation valeur nutritive valor nutritivo weight gain zone aride