Evaluation of extruded cereal grains, oil seeds and exogenous enzyme supplementation based on growth performance and nutrient digestibility studies in broilers

In the first study, the effect of extrusion of three cereal grains and exogenous dietary enzyme (D) were evaluated. Two hundred and eighty-eight day-old (Arbor Acre x Arbor Acre) male broiler chicks housed in 48 digestibility cages, were fed 12 different diets. Primary cereal grains barley (B), corn (C) and wheat (W), raw (R) or extruded (E), each with D or without (D-) were fed using a 3 x 2 x 2 factorial design.;The second experiment investigated the effect of different ratios of R and E cereal grains. Two hundred and forty day-old male broiler chicks (Petersen x Arbor Acre) housed in 40 digestibility cages were fed 10 different diets. Corn and W in different combinations of R: E; 100:0 (H: Z), 75:25 (S: T), 50:50 (F: F), 25:75 (T: S), 0:100 (Z: H) were investigated using a 2 x 5 factorial design.;A third experiment was conducted to determine the effect of E cereal grains and full fat oilseeds. One hundred and forty-four day-old male broiler chicks (Ross x Ross) housed in 24 digestibility cages were fed 6 different diets. E cereal grains barley (EB), corn (EC) and wheat (EW) with either full fat canola seed (FC) or full fat soybean seed (FS) were fed using a 3 x 2 factorial design. (Abstract shortened by UMI.).