It was carriedout an experiment with goats Saanen, on the first lactation, with 50 kg of bodyweight, housed in individual stalls of 3 m², to evaluate the effect ofsubstitution of soybean meal (SM) protein by the protein from the corn glutenflour (CGF), in the milk production, milk composition, voluntary intake andplasmatic urea. The experimental design was the triple Latin square 4x4, withfour periods of 21 days, being 14 days of adaptation to the diet and seven daysfor samples collection. The goats were fed and milked in the morning and afternoon.The substitution levels studied were: 0, 10, 30 and 50% of CGF (based in thecrude protein). The substitution of the soybean meal by CGM did not affect theintake (kg/day and %BW) of dry matter, crude protein and acid detergent fiber,but there was quadratic effect for neutral detergent fiber intake (kg/day and%BW). There was effect on the levels of plasmatic urea nitrogen (PUN), wherethe smallest values were in the intermediate levels of substitution, being thebiggest values for the treatment with only SM. The milk production decreasedlineally with the inclusion of CGM. The substitution levels resulted in linealdecrease in the fat production (kg/day), in the milk fat content (%) and milktotal solids content (%). There was quadratic effect for lactose production,being the smallest value for 31.6% of substitution level. It was no effect onin crude protein in the milk, which average was .083 kg/day. The crude proteincontent, lactose and total solids did not suffer effect of the substitutionlevels, being the average values of 2.98, 4.35 and 11.51%, respectively.
