Multivariate analysis relating milk production, milk composition, and seasons of the year oleh IONE M.P. HAYGERT-VELHO, GABRIEL M. DA CONCEIÇÃO, LUIZ C. COSMAM, DILETA R.M. ALESSIO, MARCOS BUSANELLO, MICHELI R. SIPPERT, CÁSSIA DAMIANI, ANA PAULA A. ALMEIDA, JOÃO PEDRO VELHO