Abstract
The objective of this study will be to evaluate the effect of the combined use of monensin (MON) and virginiamycin (VM) in the adaptation and finish period on rumen health of Nellore cattle macroscopically and microscopically. Seventy two 22-mo-old yearling Nellore bulls (370 kg) , backgrounded on pasture will be randomly allocated and kept in 24 pens (5,4 m² and e 0,8 m bunk per animal) …