An experiment was carried out to evaluate the apparent digestibility of diets and the metabolism of broilers fed diets containing full-fat soybean (FFS) processed by vacuum (FFSvac) or by steam (FFSstm). The experimental design was completely randomized with five treatments (control diet - CD, CD with isometric substitution of 40% FFSvac or FFSstm; diet with FFSvac and diet with FFSstm). The treatments with isometric substitution evaluated the digestibility of processed soybeans; the remains, the digestibility of diets containing either processed soybean or not (control). The N intake was 23 and 20% less (P<0.01) to the broilers fed with diets containing FFSvac or FFSstm than control group. The excretion, digestibility and absorption of N were not influenced (P>0.05) by the diets. The excretion of energy was 19 and 22% less (P<0.01) to the broilers fed with FFSvac in the diet than control group and those fed with FFSstm in the diet. The diet with FFSvac enhanced (P<0.01) the digestibility and the metabolization of energy. The apparent metabolizable energy corrected for N retention (MEn) was 12% higher (P<0.01) to the one fed of diet with FFSstm and similar to control diet (P<0.01). The dry matter, protein and ether extract digestibles, the apparent metabolizable energy and MEn were similar (P>0.05) for full-fat soybean processed by vacuum or by steam. Full-fat soybean processed by vacuum or by steam is an alternative to soybean meal and to the vegetal oil in the diets for broilers.
alternative feed; aviculture; metabolizable energy; processing
