Efficacy of Rumensin controlled release capsule for the control of alfalfabloat in cattle

Rumensin controlled release capsule (CRC) was evaluated in grazing trials a nd in confinement with fistulated steers fed alfalfa at the vegetative to e arly bud stage of growth. These stages promoted a high incidence of bloat, both in animal days of bloat and in daily frequency of distension. The bolu s reduced the incidence of bloat by an average of 50% in five trials, the d ifference being statistically significant in four of them. The cultivars AC Grazeland and Alfagraze did not differ significantly in daily bloat incide nce when evaluated at early stages of growth.