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The use of wet corn gluten feed and wet distillers grains plus solubles on adaptation and finishing cattle diets, their effects on ruminal pH, rate of passage and digestion, and total tract disappearance determinations

Pablo L Loza, University of Nebraska - Lincoln

Abstract

Six experiments were performed to evaluate the use of wet corn gluten feed (WCGF), with or without forage inclusion, and different corn processing method; the use of WCGF and wet distillers grains plus soluble (WDGS) in cattle finishing diets, with or without forage inclusion, and their effects on ruminal pH during adaptation to finishing diets; and passage and digestion rates of the byproducts. In Exp. 1, diets included 25% WCGF (DM basis) with either dry rolled corn or high moisture corn, with or without 7% alfalfa hay (AH). No interactions were observed between corn processing method and AH for steer performance. Decreasing AH reduced DMI; however, ADG and G:F were unaffected. Dry rolled corn diets resulted in higher DMI and ADG, without affecting G:F. In Exp. 2, a 50% WCGF:50% WDGS combination was fed at 0, 25, 50, or 75% of the diet DM. Diets also contained 7.5% AH or decreasing levels as byproducts inclusion increased. Decreasing the level of AH tended to decrease DMI; but did not affect ADG or G:F. Steer DMI, ADG, and G:F responded quadratically across byproducts level with maximum G:F calculated at 39% byproduct inclusion and no steer performance differences between 0 and 75% inclusions. In Exp. 3, 0, 10, 15, 20, 25, and 30% WDGS were fed in diets containing 30% WCGF, compared to a control diet without byproducts. The inclusion of 30% WCGF in the diets increased DMI, ADG, and G:F. Intake tended to respond quadratically, ADG responded quadratically, while G:F was not affected by WDGS level. Using fecal sampling technique, passage rates were 1.78%/h for DRC and 4.12%/h for WCGF; whereas, 6.16%/h for DRC and 7.45%/h for WCGF using complete rumen evacuation. Including 30% WCGF in adaptations diets reduced DMI variability. ^

Subject Area

Agriculture, Animal Culture and Nutrition

Recommended Citation

Loza, Pablo L, "The use of wet corn gluten feed and wet distillers grains plus solubles on adaptation and finishing cattle diets, their effects on ruminal pH, rate of passage and digestion, and total tract disappearance determinations" (2008). ETD collection for University of Nebraska - Lincoln. AAI3338829.
http://digitalcommons.unl.edu/dissertations/AAI3338829

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