Economic analysis of different vegetal oil sources associated with biosurfactant on the diet of finishing lamb in feedlot - Brochine, Luciano; Gallo, Sarita Bonagurio; Brochado, Thaís; Kyomen, Felipe Jose Corrado; Bohn, Ingrid; Troy, André da Silva (Reunião Anual da Sociedade Brasileira de Zootecnia, 2016)