Correlation between mastitis occurrence and the count of microorganisms in bulk raw milk of bovine dairy herds in four selective culture media - Souto, L. I. M; Minagawa, Clarice Yukari; Telles, Evelise Oliveira; Garbuglio, Márcio Augusto; Amaku, Marcos; Melville, Priscilla Anne; Dias, Ricardo Augusto; Sakata, Sônia Tatsumi; Benites, Nilson Roberti (Journal of Dairy Research, 2010)