USE of A MIXTURE of PROBIOTIC STRAINS AGAINST SHIGA TOXIN-PRODUCING ESCHERICHIA COLI (STEC) COLONIZATION IN SHEEP - Rigobelo, Everlon C. [UNESP]; Maluta, Renato P. [UNESP]; Maesta, Sirlei A. [UNESP]; Franco Lemos, Manoel Victor [UNESP]; Ávila, Fernando Antonio de [UNESP] (Federation Amer Soc Exp Biol, 2012)