1. Department of Animal Science, Universidade Federal do Rio Grande do Sul , Porto Alegre, Rio Grande do Sul , 91540-000 , Brazil
2. South America Senior R&D Manager, Nutrisurance Division, Kemin Industries, Inc. , Indaiatuba, São Paulo , 13347-394 , Brazil
3. R&D New Technologies Manager, Nutrisurance Division, Kemin Industries, Inc. , Des Moines, IA 50317
4. North America Senior R&D Manager, Nutrisurance Division, Kemin Industries, Inc. , Des Moines, IA 50317