Evaluation of corn and sorghum distillers byproducts
1997
Lodge, S.L. | Stock, R.A. | Klopfenstein, T.J. | Shain, D.H. | Herold, D.W.
Two trials were conducted to determine the feeding value of sorghum distillers byproducts. Trial 1, a finishing trial, used 160 yearling steers (327 kg). Treatments consisted of dry-rolled corn (DRC) control, sorghum wet distillers grains (SWDG), sorghum wet distillers grains plus solubles (SWDGS), and sorghum dried distillers grain plus solubles (SDDGS). Distillers byproducts were fed at 40% of the diet DM. Cattle fed diets containing SWDG, SWDGS, or DRC were similar in efficiency of gain (P > .10); cattle fed SDDGS were less efficient (P < .10) than all other treatments. Sorghum wet distillers grains, SWDGS, and SDDGS contained 96, 102, and 80% relative NEg of corn, respectively. In Trial 2, 16 crossbred lambs (55 kg) were used to determine the digestibility of sorghum and corn distillers byproducts. Byproducts were fed at 80% of the diet DM and treatments consisted of corn wet distillers grains (CWDG), corn dried distillers grains plus solubles (CDDGS), SWDG, and SDDGS. Neutral detergent fiber digestibility was not different among treatments (P > .10). Corn wet distillers grains were higher in true nitrogen (P < .001), apparent nitrogen (P < .01), and organic matter digestibility (P < .05) than SWDG. Wet distillers byproducts were higher (P < .01) in apparent organic matter and nitrogen digestibility than dried distillers byproducts. Digestibility of distillers byproducts and subsequent energy values are influenced by type of grain used in the fermentation process and drying of the finished byproduct.
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