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ARS Home » Southeast Area » Mississippi State, Mississippi » Poultry Research » Research » Publications at this Location » Publication #298719
Title: Live production and carcass characteristics of broilers fed a blend of poultry fat and corn oil derived from distiller’s dried grains with solubles (DDGS)

Author
item Kim, Elizabeth
item Purswell, Joseph - Jody
item DAVIS, J - Mississippi State University
item LOAR, R - Poet
item KARGES, K - Poet

Submitted to: Poultry Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 6/7/2013
Publication Date: 9/15/2013
Citation: Kim, E.J., Purswell, J.L., Davis, J.D., Loar, R., Karges, K. 2013. Live production and carcass characteristics of broilers fed a blend of poultry fat and corn oil derived from distiller’s dried grains with solubles (DDGS). Poultry Science. 92(10):2732-2736.

Interpretive Summary: In order to meet increasing demands for biodiesel production, corn distiller’s dried grains with solubles (DDGS) is now being further processed to remove corn oil. In addition to being used as a bio-diesel feedstock, this DDGS-derived corn oil may also be used as a source of dietary energy for poultry. While conventional corn oil has been extensively studied for its role in poultry nutrition, this is the first study to evaluate the use of DDGS-derived corn oil in broiler diets. A 49 d broiler production study was conducted to compare the effects of blending poultry fat and DDGS-derived corn oil on live performance and carcass characteristics. Four corn-soybean meal based diets were formulated with differing blends of poultry fat (PF) and corn oil (CO). All diets contained the same amount of total fat but differed in the composition of the blends. One diet had the sole source of fat as PF (100:0% PF:CO) and then was replaced with 25% CO, 75% CO, and a 100% CO replacement. All diets were fed in a three phase feeding program. Upon completion of the experiment, birds were processed and carcass, abdominal fat, and breast muscle components were determined. There were no significant differences in live performance for the starter phase (0-18 d). For the grower phase (0-35 d), birds fed 75:25% PF:CO , significantly (P=0.05) increased BW, BW gain, and decreased feed conversion. Birds fed diets with 100% replacement of poultry fat with corn oil saw the same significant increase; however, FCR (feed:gain) was significantly higher for these birds when compared to birds fed the 75:25% PF:CO diets. There were no significant differences for the finisher phase (0-48 d) in live production parameters, but there was a trend where 75:25% PF:CO showed an improvement in live production parameters. On d 49, live weights for birds fed the 0-100% PF:CO diets were significantly (P=0.05) lower than all other treatment birds with a trend for lower carcass and breast weights and an increased abdominal fat pad. Pellet durability for grower and finisher pellets were found to be significantly (P=0.05) improved for increasing amounts of CO added to the diet. The results of this study indicate that a new DDGS-derived CO may be used to partially replace PF in broiler diets.

Technical Abstract: Corn distiller’s dried grains with solubles (DDGS) are now being further processed to remove corn oil and may subsequently be used as a source of dietary energy for poultry. The objectives of this study were to compare the effects of a poultry fat (PF) and a new DDGS-derived corn oil blend (CO) on live performance and carcass characteristics of 49 d broilers. Four corn-soybean meal based diets were formulated with differing blends of PF and CO. All diets contained the same percentage of total fat, but differed in the composition of the blends. One diet had the sole source of fat as PF (100:0% PF:CO) and was then replaced with 25% CO, 75% CO and a 100% replacement of CO. All diets were fed in a three phase feeding program. On d 49, birds were processed and carcass, abdominal fat pad, and breast muscle components were determined. There were no significant differences in live performance for the starter phase (0-18 d). For the grower phase (0-35 d), birds fed 75:25% PF:CO , significantly (P=0.05) increased BW, BW gain, and decreased feed conversion. Birds fed diets with 100% replacement of poultry fat with corn oil saw the same significant increase; however, FCR (feed:gain) was significantly higher for these birds when compared to birds fed the 75:25% PF:CO diets. There were no significant differences for the finisher phase (0-48 d) in live production parameters, but there was a trend where 75:25% PF:CO showed an improvement in live production parameters. On d 49, live weights for birds fed the 0-100% PF:CO diets were significantly (P=0.05) lower than all other treatment birds with a trend for lower carcass and breast weights and an increased abdominal fat pad. Pellet durability for grower and finisher pellets were found to be significantly (P=0.05) improved for increasing amounts of CO added to the diet. The results of this study indicate that a new DDGS-derived CO may be used to partially replace PF in broiler diets.