Organic Value Recovery Solutions LLC © Organic Value Recovery Solutions 2010 © Organic Value Recovery Solutions 2010 SOLDIER FLY PREPUPAE AS AN ALTERNATIVE FEED FOR CHANNEL CATFISH Presented at the World Aquaculture Society, Seattle, WA, 2009 G. J. Burtle*, D. C. Sheppard, and G. L. Newton.  Animal & Dairy Science University of Georgia Tifton, GA  31793 Black soldier fly, Hermitia illucens, produce a harvestable prepupae that has potential as a substitute for fish meal or other animal protein sources in diets for fish, such as channel catfish.  Dried black soldier fly prepupae contains 42% CP (Met 0.83%, Lys 2.21%, Cys 0.31%) and 35% lipid (lauric 53.4%, linoleic 8.8%).  Calcium and phosphorus are 5.0 and 0.88% respectively when grown on swine manure.  Lipid and mineral composition change considerably as the soldier fly larval diet is changed.  For example, omega three fatty acids can be increased by adding materials that contain these lipids to the larval diet. Soldier fly larvae can utilize plant products to provide a high quality ingredient for carnivorous fish and crustaceans as outlined in Goal 5 of the PPA Strategic Plan.  Channel catfish (10 g) were fed diets containing 0, 7.5, 15, 22.5 or 30% soldier fly Prepupae Meal (SF) with the 0% SF diet containing 8% menhaden fish meal and soybean meal, wheat middlings, corn, and soy oil varied to make the diets similar in energy (DE, 2,934+ 75 kcal/kg) and protein (32.09+ .09% CP).  Growth after eight weeks was similar (P<.05) for all five diets, 30% SF: 15.9 (4.7), 22.5% SF: 13.7 (3.6), 15% SF: 17.3 (2.5), 7.5% SF: 18.0 (1.9), and 0% SF 15.9 (3.6) grams gain/fish respectively.  Feed intake and feed conversion were also similar due to the apparently good palatability of the diets.  Catfish survival was 97+ .5% and losses were not related to diet.  Based on protein efficiency ratio, diets containing SF had a calculated average value of 108.5% of the diet containing no SF and 8% menhaden fish meal.  Dietary lipid increased as the percentage of SF increased, as did the dietary calcium and phosphorus.  However, direct effects of these differences were not evident in catfish growth, since no statistical significance was detected for catfish gain/fish, feed/gain, feed intake, or survival.  From this study, not adverse performance was observed up to 30% addition of SF and 7.5% SF compared favorably to 8% menhaden fish meal. Final Weight Gains of Fingerlings (10g initially) Fed Four Soldier Fly (SF) and One Menhaden Diets _______________________________________________________________ 7.5% SF 15% SF 22.5% SF 30% SF 8% Menhaden 18.0g 17.3g 13.7g 15.9g 15.9g _______________________________________________________________