Voluntary intake, apparent digestibility and nitrogen balance by sheep supplemented with Leucaena leucocephala - Longo, Cibele; Nozella, Eduardo Fernando; Cabral Filho, Sergio Lucio Salomon; Lavorenti, Norberto Antonio; Vitti, Dorinha Miriam Silber Schmidt; Abdalla, Adibe Luiz (Livestock Research for Rural Development, 2008)