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O experimento foi realizado com o objetivo de avaliar os efeitos da adição de complexo multienzimático (CM) e do nível de processamento da soja sobre os valores energéticos e os coeficientes de digestibilidade dos nutrientes de rações para pintos de corte. Foram utilizados 288 pintos de corte machos da linhagem Avian Farms, com oito dias de idade, em arranjo fatorial 3 x 2 (rações à base de soja extrusada subprocessada, normal e superprocessada, suplementadas ou não com complexo multienzimático), totalizando seis tratamentos, com oito repetições de seis aves por unidade experimental. As excretas foram coletadas e pesadas durante cinco dias consecutivos, utilizando-se os métodos de coleta total e de coleta ileal. A adição do CM (protease, amilase e celulase) promoveu aumento médio dos coeficientes de digestibilidade ileal aparente de matéria seca, proteína, energia e gordura das dietas de 4,8; 1,3; 4,8 e 6,0%, respectivamente. Entretanto, os maiores aumentos nos valores de digestibilidade ileal proporcionados pelo CM foram obtidos com as rações contendo soja extrusada subprocessada: 10,7% MS, 4,2% PB, 11,4% EB e 17,6% gordura. A adição do CM melhorou a digestibilidade ileal de FDN, FDA e HEM, em média, 10,60; 23,05 e 6,39%, respectivamente. As aves alimentadas com dietas contendo soja extrusada normal apresentaram maiores coeficientes de digestibilidade ileal dos nutrientes e valores de EM que aquelas alimentadas com sojas extrusadas sub e superprocessadas. This experiment was conducted to evaluate the effect of multienzymatic complex (MC) addition in diets with different types of extruded soybeans on the energy values and nutrient digestibility coefficients for broiler chicks. A total of 288 Avian Farms males broiler chicks averaging eight days old was allotted to a 3 x 2 factorial arrangement (under, standard and over processed extruded full fat soybean-based diets with and without MC, in a total of six treatments with eight replicates and six birds per experimental unit. Feces were collected and weighed during five days. It was observed that the MC addition (composed by cellulase, amylase and protease) increased the coefficients of dietary ileal apparent digestibility of DM, CP, GE, and fat by 4.8, 1.3, 4.8, and 6%, respectively. However, under processed extruded full fat soybean-based diets, with MC, increased most the ileal digestibility: 10.7% (DM), 4.2% (CP), 11.4%, (GE), and 17.55% fat. The MC addition increased the ileal digestibilility of NDF, ADF, and hemicelullose at average 10.60, 23.05, and 6.39%, respectively. The birds fed diets with standard processed extruded full fat soybean showed higher values of coefficients of nutrient ileal digestibility and of metabolizable energy than those fed extruded under and over processed full fat soybean-based diet

Adição de complexo multienzimático em dietas à base de soja extrusada: valores energéticos e digestibilidade de nutrientes em pintos de corte