Abstract
Abstract One digestibility experiment (Exp. 1) and one growth experiment (Exp. 2) evaluated 2% soy-lecithin as an emulsifier of 6% rendered fat in a two-phase starter diet program (phase 1 = d 0 to d 14 postweaning; phase 2 = d 14 to d 35 postweaning). In Exp. 1, there was no interaction between lecithin and rendered fat. Lecithin improved gain/feed (G/F) (P 0.1) on average daily feed intake (ADFI) or gain/ME. Rendered fat significantly improved ADG, ADFI, and G/F during phase 2 and overall, but had no effect on gain/ME (P > 0.1). In Exp. 2, lecithin did not improve digestibility of rendered fat, but rendered fat increased apparent digestibility of crude fat (P 0.1) on the utilization of GE or N by the pigs. Lecithin did not improve the utilization of rendered fat by weanling pigs in this study.
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