Resíduo industrial do tomate em substituição à silagem de sorgo no confinamento de bovinos nelore

Abstract

The experiment was carried out at Experimental Farm of the Universidade Estadual de Montes Claros, Janaúba County, in the North of Minas Gerais, from August 31 to October 25, 2009, in order to evaluate the productive performance and carcass traits of Nellore bovines in feedlot with different levels of industrial tomato residue in substitution of sorghum silage. They were used 20 Nellore bulls with average of 450.30 and 540.70 kg of initial and final live weight, respectively, being 4 repetitions per treatment divided into a design entirely at random composed of 5 treatments, in individual cages provided with feeders and covered masonry drinkers, with total area of 15m2 . The diets were formulated for daily live weight gain of 1.25 kg with the roughage:concentrate 50:50 relation, isoprotein and isoenergetic ones. The treatments were substitution of 0%, 15%, 30%, 45% and 60% of sorghum silage by industrial tomato residue in the dry matter. The substitution of sorghum silage for agro industry tomato residue until levels of 60% (dry matter basis) did not influence the productive performance of Nellore bovines finished in feedlot. The substitution of sorghum silage by tomato residue is viable when the relation cost/kg DM of the silage:cost/kg DM of the tomato residue is equal 1.12. The measures of evaluated carcass characteristic were not influenced by the substitution of the sorghum silage by tomato residue until the level of 60% of inclusion.