Zootechnical performance of Dorper x Santa Inês lambs raised in different production systems

Abstract The objective of this work was to compare the zootechnical performance Dorper x Santa Inês crossbred lambs finished in grazing systems on Megathyrsus maximus Aruana cultivar pasture, with and without shading, a feedlot. Twenty-four non-castrated were used completely randomized experimental design, three following treatments eight replicates each: 'Aruana' pasture shading + supplement; feedlot, diet containing ryegrass hay concentrate at 20:80 ratio. did not influence lamb age slaughter, birth weight, leg compactness, true yield, main cut except that breast tip flank lower for shading. However, average daily gain, body condition score, live weight carcass compactness index, cold empty weights, yield differed between treatments, showing higher values Termination feedlot increases sheep favors as well greater commercial cuts, but their yield.