Effect of dried distillers grain with solubles (DDGS) and rye on growth performance and gut health of broilers as affected by enzyme supplementation
Published: July 29, 2013
By: F. Yan, J. Dibner, M. Vazquez-Anon and C. Knight
Novus International Inc. St. Charles, MO
A study was conducted to evaluate effect of high levels of corn DDGS and rye on growth performance and gut health of broilers as influenced by a nonstarch polysaccharides (NSP) degrading enzymes blend (CIBENZA® CSM, Novus International, Inc.). The study consisted of 8 treatments: corn soy control, 30% DDGS, 16% corn bran, 38% rye, 38% rye plus enzyme, 25% rye, 25% rye 30% DDGS, and 25% rye 30% DDGS plus enzyme. Corn bran at 16% provided the same level of crude fiber as that contained in 30% DDGS. Each diet was fed to 8 replicate floor pens of 21 male broilers. Body weight, feed intake, FCR, and mortality were determined at 19, 35, and 42 d. Ileal Clostridium perfringens (Cp) on d 28, and digesta viscosity on d 43 were measured. Data were analyzed by one way ANOVA and statements of significance were based on P < 0.05. Incorporation of 30% DDGS to corn soy diets decreased body weight at d 19 and 35 and increased FCR throughout the trial, whereas birds fed diets containing 16% corn bran performed equally or better than control birds, suggesting fiber might not be a critical factor in limiting high levels of DDGS in broiler diets. Inclusion of 30% DDGS in diets containing 25% rye did not significantly affect performance of broilers. Birds fed diets containing 25% rye weighed less and had higher FCR; increasing rye to 38% did not further worsen growth performance. Enzyme significantly improved weight gain and FCR throughout the trial when it was added to diets containing 38% rye; and the effect was slightly less when it was added to diets containing 25% rye and 30% DDGS. Rye inclusion increased digesta viscosity and enzyme addition significantly reduced it. Mortality at 35 or 42 d was positively correlated with both digesta viscosity and ileal Cp level. In summary, high levels of DDGS and rye were detrimental to broiler performance and NSP degrading enzymes improved growth performance and gut health of broilers when rye or rye and DDGS were present.
Key words: broiler, gut health, enzyme, distillers grain, rye
Key words: broiler, gut health, enzyme, distillers grain, rye
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