Exp. 1: Energy digestibility.
This experiment was conducted to determine the apparent total tract digestibility (ATTD) of gross energy (GE), the digestible energy (DE) and metabolizable energy (ME) and the ME:DE ratio of 13 DLRSM fed to growing pigs. Eighty-four crossbred barrows (initial BW: 48.3 ± 2.4 kg; Duroc × Landrace × Yorkshire) were allocated to one of 14 dietary treatments in a completely randomized design with 6 barrows in each dietary treatment. The 14 experimental diets included one corn-soybean meal basal diet and 13 DLRSM test diets. The DLRSM test diets were formulated to contain 19.2 % DLRSM which replaced 20 % of the energy supplied by corn, soybean meal, and Lys in the basal diet (Table 4). The chemical composition of the experimental diets is presented in Table 5.