The experiment was realized to determine the chemical composition and energetic values of cookie waste (CW), wafer waste (WW), caramel chocolate waste (CCW) and candy and chocolate bar waste (CCBW) using nursery piglets as an experimental model. Ten castrated piglets weighing 7.4±0.97kg individually housed in a metabolic cage were used. The piglets were distributed in five treatments: 1) Reference diet (RD); 2) 60% RD + 40% CW; 3) 60% RD + 40% WW; 4) 80% RD + 20% CCW; and, 5) 80% RD + 20% CCBW. The experiment was repeated in three consecutive 12 day timeframes, being seven for adaptation and five for total collection of feces and urine. The ferric oxide was used as fecal marker. Randomized block design was used to compare the digestibility coefficients. Crude protein values were 7.96, 10.78, 6.33 and 4.01 for cookie flour, dry wafer, caramel chocolate and candy and chocolate bars, respectively. A high amount of ether extract was observed on cookie flour and dry wafer (11.7 and 9.4%, respectively), however the chocolate by-products presented higher values (24.7 and 34.3%, for caramel chocolate and candy and chocolate bars, respectively). There was no difference (P>0.05) among digestibility coefficients of nutrients and energy and metabolizability energy coefficients among the feedstuff studied. The digestible and metabolisable energy values were 3914 and 3745; 4040 and 3767; 4454 and 4200; and, 4937 and 4790 kcal/kg for cookie flour, dry wafer, caramel chocolate and candy and chocolate bars, respectively. It is concluded that cookie flour, dry wafer, caramel chocolate and candy and chocolate bars have potential to be used in the diets of nursery pigs.
pig; digestibility; metabolism
