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DISTILLERS GRAINS IN POULTRY DIETS

Anticipation of increased supplies of distiller’s dried grains with solubles (DDGS) in the Midwest has rekindled the interest in utilization of this by-product in animal feeds. In the Midwest US, corn is the primary feed stock although other grains can be processed as well. With increasing numbers of chicken layers and a large turkey industry in the Midwest, use of DDGS in poultry diets appears to have potential. Unfortunately, there is limited recent research for this ingredient with modern strains of poultry. In the dry mill production of ethanol two products are produced – liquid. | DISTILLERS GRAINS IN POULTRY DIETS S. Noll V. Stangeland G. Speers and J. Brannon University of Minnesota Anticipation of increased supplies of distiller s dried grains with solubles DDGS in the Midwest has rekindled the interest in utilization of this by-product in animal feeds. In the Midwest US corn is the primary feed stock although other grains can be processed as well. With increasing numbers of chicken layers and a large turkey industry in the Midwest use of DDGS in poultry diets appears to have potential. Unfortunately there is limited recent research for this ingredient with modern strains of poultry. In the dry mill production of ethanol two products are produced - liquid solubles and grain residue. Each could be dried separately but are mixed together to form DDGS as a dry ingredient. Some of the liquid solubles have been fed experimentally with acceptable results Hunt et al. 1997 but usually the product is fed after drying. DDGS as a feed ingredient has a moderate protein content and energy level similar to soybean meal. As a sole source of protein in diet Parsons and coworkers 1983 found DDGS to be limiting in tryptophan and arginine after lysine. An early use of DDGS in poultry diests was primarily as a source of unidentified factors that promote growth and hatchability. Distillers dried solubles DDS or DDGS were used in diets at low levels of inclusion usually less than 10 . Couch et al. 1957 found 5 inclusion of DDS variably improved turkey growth rates with the response ranging from 17-32 . Day et al 1972 reported broiler body weight improvements to DDS and DDGS in broiler diets at 2.5 and 5 in one of 3 trials. Improved reproductive performance has also been indicated for turkey breeder hens. Couch et al 1957 found improvements in turkey breeder hatchability during the second half of lay with inclusion of dried alfalfa meal condensed fish solubles and DDS. Manley et al 1978 found 3 DDGS improved egg production in hens late in lay and experiencing a