TY - SER AU - Barnabé,V.H. AU - Barnabé,R.C. AU - Oliveira,C.A.de AU - Gambarini,M.L. AU - Guido,M.C. AU - Valentim,R. TI - Testosterone concentration in blood serum of buffalo bulls during 24 hours in winter and summer seasons KW - BUFALO KW - BIOLOGIA ANIMAL KW - TESTOSTERONA KW - SANGUE ER -