title: Evaluation of dehydrated restaurant food waste products as feedstuffs for finishing pigs.
abstract: Two dehydrated restaurant food waste (DFW) products were evaluated as potential feedstuffs for finishing pigs. For each product, fresh food wastes were obtained from food service operations at a resort complex in central Florida. The wastes were mostly leftover food and plate scrapings. The wastes were minced, blended with a feed stock (soy hulls and wheat flour [DFW1] or soy hulls and ground corn [DFW2]), pelleted, and dried. The dried product was then blended with additional minced fresh food wastes and dried; this process was then repeated. The final DFW products contained approximately 60% dried food wastes. The DFW1 and DFW2 products contained 11.4 and 8.4% moisture, 15.0 and 14.4% CP, 13.8 and 16.0% crude fat, 10.4 and 14.5% crude fiber, 5.8 and 4.7% ash, .63 and .64% lysine, .54 and .63% Ca, .34 and .38% P, .69 and .86% Cl, and .35 and .47% Na, respectively. Two feeding trials with 48 and 72 finishing pigs (56 to 112 kg), respectively, were conducted comparing diets without (control) or with the DFW product included at 40% of the diet (DFW1) for Trial 1 and 40 or 80% of the diet (DFW2) for Trial 2. Pigs fed the DFW diets in both trials had ADG that were similar (P > . 10) to and average gain:feed ratios that were superior (P = .06, Trial 1; P < .01; linear, Trial 2) to those for control pigs. Carcass lean content and lean quality scores were not reduced (P > . 10) by feeding pigs the DFW diets in either trial. Carcass fat became softer (P < .01; linear) with increasing amount of DFW2 in the diet in Trial 2. Thus, dehydrated restaurant food wastes have the potential to produce a nutritious feedstuff for pigs while offering a viable solid waste disposal option.
authors.affiliation: Department of Animal Science, University of Florida, Gainesville 32611, USA.
authors.forename: R O
authors.initials: RO
authors.lastname: Myer
authors.forename: J H
authors.initials: JH
authors.lastname: Brendemuhl
authors.forename: D D
authors.initials: DD
authors.lastname: Johnson
mesh_terms: D000821:Animal Feed; D000822:Animal Husbandry; D000818:Animals; D001823:Body Composition; D003890:Desiccation; D005502:Food; D005735:Garbage; D008461:Meat Products / Q000592:standards; D012037:Refuse Disposal; D012147:Restaurants; D013552:Swine / Q000254:growth & development*; D014866:Waste Products
chemical_list: D014866:Waste Products