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An experiment was carried out to assess the performance of steers on Brachiaria brizantha and Cynodon dactylon cv. Coast cross pastures by the continuous stocking method with a variable stocking rate. A completely randomized experimental design was used with two pastures representing the treatments, each containing 10 replicates. The results of t-tests demonstrated that the steers grazed for less time (7:19 h) on the B. brizantha grass pasture than the on Coast-cross grass pasture (8:13 h). There was no difference in rumination time from 6:46 and 6:89 h for the B. brizantha and Coast-cross pastures, respectively. There was a significant difference for the values regarding the time that the steers remained idle, and the animals were more frequently idle on the B. brizantha pasture, which was associated with less grazing time because there was no significant difference in the total rumination time. The lowest bite rates were observed in the Coast-cross pasture compared with B . brizantha during the daytime and nighttime. Nonetheless, the total number of bites were significantly higher in the Coast cross pasture; however, the lowest bite rate overall was recorded in the B . brizantha pasture. These results suggested that there was a compensation mechanism between the grazing times and the bite rates so that the animals could regulate the quantity of forage ingested. Se realizo un experimento para evaluar el comportamiento de novillos en pasturas de Brachiaria brizantha y Cynodon dactylon , en pastoreo continuo con carga animal variable. El diseno experimental fue completamente al azar con las dos pasturas como tratamientos, cada uno con diez repeticiones. La prueba T demostro que los novillos pastaban en menos tiempo la pastura de Brachiaria , con el tiempo 7:19 horas, mientras que el tiempo en la pastura Coast-cross era 8:13 horas. No hubo diferencias en el tiempo rumia, lo cual fue 6:46 y 6:89 horas para pastos de hierba Brachiaria y Coast-cross, respectivamente. Para las cantidades relacionadas con el momento en que los novillos se quedaron inactivos, hubo diferencias significativas, con mas tiempo para los animales que permanecieron en la pradera de Brachiaria; este hecho se asocia con el menor tiempo pastoreo, ya que no hubo diferencias significativas en el tiempo total de la rumia. Las tasas de mordeduras mas bajos fueron significativamente inferiores en Coast-cross en comparacion con Brachiaria , ya sea en el dia o la noche. No obstante, el numero total de mordeduras fueron significativamente mas altos para en Coast-cross pastos, sin embargo, la tasa de picadura mas bajo sobre el tiempo total se registro en Bracharia pastos. Los resultados sugieren que existe un mecanismo de compensacion entre los tiempos de pastoreo y la tasa de mordeduras, de modo que los animales podian regular la cantidad de forraje consumido.

INGESTIVE BEHAVIOR OF STEERS ON PASTURES OF Brachiaria brizantha AND Cynodon dactylon