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Performance of sheep in feedlot termination fed with dried grapes residue diets associated with different energy sources

The effect of combining diets residues from grapewine industries with different energy sources on consumption, daily weight gain and feed conversion of sheep in feedlot termination were evaluated. Eighteen seven-month old male sheep, non-defined breed, were used, weighted initialy 23.0kg, distributed in randomized blocks with three treatments and six repetitions. The experimental period consisted of 63 days, being the diets composed of 50% of grapewine industry residue and 50% of energy concentrate: ground corn grain (Zea mays) (T1), cassava chips (Manihot esculenta) enriched with 1.8% of urea (T2) and fodder cactus dried meal (Opuntia ficus) enriched with 1.1% of urea (T3). Intakes of dry matter (DM), crude protein (CP) and total carbohydrate (TCHO) were evaluated, as well as daily and total weight gains and feed conversion. Respectively for the combination of residue and ground corn grain, for cassava chips and for fodder cactus dried meal, intakes of MS, PB and CHOT were 1085, 906 and 1508g dia-1; 129, 139 and 220g dia-1; 846, 691 and 1157g day-1; average daily weight gains were 117g, 71g and 132g; feed conversions were 9.50, 13.28 and 11.30. Daily averages of live weight gains obtained by sheep during the fattening period showed a good forage potential of the residues of grapewine industries combined with different energetic sources.

intake; feed conversion; weight gain


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