Expeller Soybean Meal: Evaluation of Holstein Cow Production and in Vitro Ruminal Kinetic

We aimed to evaluate the inclusion of expeller soybean meal on quality and milk production Holstein cows, as well estimate compare inherent parameters in vitro ruminal kinetics. Data collection was carried out a private property, interior municipality Dois Vizinhos - Paraná, Brazil. Twenty cows were used, divided into two treatments: one with other conventional meal. The design used completely randomized parity. Milk evaluated through weighing. samples collected days 0, 15, 30 45 protein, fat, urea nitrogen, lactose total solids. In kinetics convencional performed at Universidade Tecnológica Federal do Paraná €“ Vizinhos. gas pressure volume measures taken after 1, 2, 3, 6, 8, 10, 12, 16, 20, 24, 30, 36, 48 72 hours sample incubation. results obtained applied two-compartmental mathematical model no latency time first compartment for description analyzed by variance (ANOVA) compared F test. There significant difference any variables from mil when included animals' diet (P>0.05). showed lower degradation differences concentration solids milk.