Source: http://univ-bejaia.dz/jspui/bitstream/123456789/4599/1/Formulation%20d%E2%80%99un%20aliment%20de%20b%C3%A9tail%20%C3%A0%20base%20de%20sous%20produits%20agro%20industriels%20par%20voie%20biotechnologique.pdf