International Journal of Arts & Sciences, CD-ROM. ISSN: 1944-6934 :: 08(04):339–348 (2015) NUTRITIONAL SOLUTION FOR RECYCLED INDUSTRIAL FOOD WASTES Antoine G. Farhat Notre Dame University-Louaize, Lebanon Four hundred day-old Pekin and Muscovy male ducklings were raised on diets based entirely on food wastes to market ages of 7 and 11 weeks, respectively. Two feeding systems were offered to the birds: commercial pellets (control), and feeds consisting exclusively of food waste. The experimental feeding system had a dry pelleted diet and a wet mash diet. Body weight was not significantly different (P>0.05) for the Pekin and Muscovy ducklings fed the feeding system containing food waste when compared to the control feeding system. Feed efficiency was significantly better (P<0.05) for the experimental systems for both breeds. Sixteen carcasses from each breed were analyzed to determine the effect of the waste feeding system compared to the conventional system. Within the Pekin breed, ducklings fed food waste diets had significantly (P<0.05) higher skin and fat % than the ducklings fed the commercial control diet. The precise-feeding technique was performed to ascertain the apparent metabolizable energy corrected for zero nitrogen balance (AMEn) values for the 11 feedstuff ingredients (corn and soybean meal and nine food waste ingredients) used in the feeding trials. Peanut had significantly (P<0.05) the highest energy value followed by pogo, granola, tofu, the food waste diet used in the feeding trial, bread, corn, soybean meal, brewers grain, okara, and peanut skins with 5195, 4195, 4019, 3967, 3498, 3220, 3216, 2357, 1829, 1712, and 1244 kcal AMEn/kg, respectively. Bread NDF was significantly (P<0.05) the most digestible (88.9 % NDF digestibility) as it contained 96.29 % hemicellulose while okara NDF, besides peanut skins and soybean meal, was significantly (P<0.05) the least digestible (26.94 % NDF digestibility) as it contained 14.38 % hemicellulose. The results of these studies demonstrate that industrial food wastes represent valuable resources to recycle into high-quality energy and protein food for human consumption. Keywords: Nutritional evaluation, Food waste, Metabolizable energy, Ducks, Growth, Carcass composition. Introduction The global ecological imbalance and the irrational use of the natural resources continue to threaten life quality in the near future. In a well urbanized and industrialized society, one would feel satisfied with the well being of his or her community. However, the industrialized countries are the most responsible for the deterioration of the environment because of an unsustainable system of production and consumption. The growth of human population requires more food production within the earth's ecological capacity. Rational patterns of consumption, production, and long term sustainability are required to absorb the devastating effects of the population growth and its consequences. The world reserve of grain in the mid nineties was only enough for less than 49 days (Brown, 1996a) indicating the narrow margin of safety. 339