Lambs fed with increasing levels of grape pomace silage: Effects on productive performance, carcass characteristics, and blood parameters

•Inclusion of grape pomace silage from Vitis vinifera (cv. Bordeaux) to replace whole plant corn silage in diet of lambs modified feed conversion, weight gain and feed evaluation.•The lambs performance was altered with inclusion of grape pomace silage due to higher presence of lignified fractions.•Due to the higher lipid content of diets with grape pomace silage, carcass fat of lambs modified.•Copper levels identified in grape pomace silage did not cause poisoning in lambs.