Two experiments were conducted to evaluate the effects of microbial enzymes on weight gain, feed intake and feed: gain ratio. In the first trial, 288 chicks from 8-21 days old were assigned to a complete randomized design with a 2 x 2 fatorial arrangement: meal (soybean meal + sorghum and soybean meal + millet) and with or without multi-enzymatic complex (MC), with four replications of 18 bird per experimental unit. Diets were formulated to contain the same levels of metabolizable energy (ME), amino acids, calcium and phosphorus. In the second trial, 384 broilers from 21-42 days old were assigned to a complete randomized design with six treatments and four replications pf 16 birds per experimental unit. All diets contained corn, soybean meal, 7 and 9% of ME, levels of 7 and 5% of methionine (Met), Met + cystine (Cys) and lysine (Lys) with or without MC. It was concluded, in the first trial, that the inclusion of MC in both soybean meal and sorghum and millet-based diets did not show positive effect on broiler performance. In the second trial, ME and amino acids (Met, Met+Cys and Lys) values could be overestimated in 9 and 7%, respectively, when dietary MC level increased, with no effect on bird performance.
millet; multienzymatic complex; sorghum; soybean meal
