Effect of a symbiotic on average weight gain and egg per gram of feces account of confined lambs

Abstract

The aim of this work was to evaluate the performance of lambs confined per 45 days, supplemented with commercial symbiotic. The experiment was lead in the North of the Paraná State, Brazil. Santa Ines, Suffolk and Santa Ines x Suffolk crossbred lambs (n=44), fed with oat hay and concentrate (30:70), had been divided in two groups: Control (n=22), not supplemented with symbiotic, and Symbiotic (n=22). Alive body weight, average daily body weight gain (ADWG) and egg per gram of feces account (EPG) had been evaluated into intervals of 15 days. There was no difference for average alive body weight (P > 0.05). During the confinement, the ADWG in Symbiotic group (280g/day) was higher than in Control one (238g/day) (P < 0.05), achieving maximum value on the last 15 days of confinement (288g/ day). At the end of confinement, EPG decreased in Symbiotic group (864) (P < 0.05), as it increased in Control group (2864) (P < 0.05). Economic analysis showed economic return of R$ 782.31 for Simbiotic 1 Aluno (a) do Programa de Pós-graduação em Ciência Animal, Universidade Estadual de Londrina – UEL, Londrina-Pr.