Leite et al., 2006. Rev. Bras. Zootec., 35 (3): 792-796

This trial was carried out to determine the effect of continuous, alternate or rotational grazing systems on the performance of pigs (feed intake, weight gain, feed conversion and backfat thickness) during the growing and finishing phases, as well as the forage availability and chemical composition of a white clover pasture (Trifolium repens L.). 36 castrated pigs were allotted to a randomized complete block experimental design with three treatments and three replicates. 12 feedlot pigs were kept on a rearing system. Based on animal performance and forage on offer, there were no significant differences among the grazing systems. However, significant differences were observed on the pasture chemical composition of the grazing systems studied. Pigs reared on white clover pasture consumed 13.41-15.92% less feed and had thinner backfat thickness and weight gain than pigs reared in the confined system. No significant differences on feed conversion between feedlot pigs and pigs under pasture conditions were observed.