“…However, in experiment 2, which had higher stress as indicated by the controls having a higher mortality and lower growth than experiment 1, SDP improved ( p < 0.05) growth rate, feed conversion, flock uniformity, and breast-meat yield. Henn et al [44] evaluated SDP in two experiments consisting of titrated levels of SDP from 0, 1.5, and 3% SDP in the starter followed by 0 or 0.5% SDP in the grower phase in experiment 1, while experiment 2 had 4 treatments consisting of SDP levels of 0, 0, 0; 1.5, 0, 0; 1.5, 0.5, 0; and 1.5, 0.5, 0.25%, respectively, for the starter, grower and finisher phases. Feeding SDP in Experiment 1 resulted in lower ( p < 0.05) feed intake and improved ( p < 0.05) feed conversion from d 1 to 21.…”