Naas, I.2008-03-272008-03-272001-011682-1130https://hdl.handle.net/1813/10254Rosana G. Moreira, Editor-in-Chief; Texas A&M UniversityThis is an Invited Paper from International Commission of Agricultural Engineering (CIGR, Commission Internationale du Genie Rural) E-Journal Volume 3 (2001): I. Naas. Precision Animal Production. Vol. III, January 2001.en-USAnimal ProductionAgricultural Engineeringarticle