Evaluation of sodium monensin on the performance of lambs supplemented in pasture

The experiment was conducted to evaluate the effect of the ionophore addition to the concentrate supplement on the 0; 25; 50 and 75 mg of monensin/animal/day on levels, in the performance of sheep. It was used 16 lambs average with age of four months old and average initial weight of 17.85 ± 3.84 kg, the animals were kept in a pasture of Bermuda grass Tifton 85 ( Cynodon spp.) in on completely randomized design was used. Pasture accumulation and quality were evaluated. Addition of monensin did not affect average daily weight gain, the best feed conversion and feed efficiency. Supplementation of the sodium monensin concentrated supplement did not favored or better performance of animals.