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Full-Text Articles in Life Sciences
Comparison Of Conventional And Two-Stage Reversible Flow, Static-Bed Biodenitrification Reactors, Bryan L. Woodbury, Mohamed F. Dahab
Comparison Of Conventional And Two-Stage Reversible Flow, Static-Bed Biodenitrification Reactors, Bryan L. Woodbury, Mohamed F. Dahab
Department of Animal Science: Faculty Publications
This paper compares the operation of a traditional single-stage system with a two-stage, reversible flow biodenitrification system for removing nitrates from drinking water. The purpose of this study was to investigate the ability of these two-stage systems to remove nitrate and residual organics from treated water as compared to single-stage units. In the reversible flow system, the second-stage (i.e. follow) reactor is operated in series with the first-stage (i.e. lead) reactor. After a given period of operation, the flow regime is reversed so that the follow reactor becomes the lead one and vice versa. The active solids remaining in the …
Managing N Inputs And The Effect On N Losses Following Excretion In Open-Dirt Feedlots In Nebraska, Galen Erickson, Terry Klopfenstein
Managing N Inputs And The Effect On N Losses Following Excretion In Open-Dirt Feedlots In Nebraska, Galen Erickson, Terry Klopfenstein
Department of Animal Science: Faculty Publications
Feedlot nutrition will play an important role in meeting environmental challenges of beef cattle feedlots. Nutritionists are continually refining protein requirements and recently adopted a new, metabolizable protein (MP) system to more efficiently use N and allow more accurate diet formulation. Protein requirements vary by animal age and weight during the finishing period. Our hypothesis was that formulating diets with the MP system would decrease N inputs leading to decreased excretion and losses. Comparing industry average diets (13.5% CP) to phase-fed diets formulated to not exceed MP requirements decreased N inputs by 10 to 20% for calves and yearlings without …
Nutritional Methods To Decrease N Losses From Open-Dirt Feedlots In Nebraska, Galen Erickson, Terry Klopfenstein
Nutritional Methods To Decrease N Losses From Open-Dirt Feedlots In Nebraska, Galen Erickson, Terry Klopfenstein
Department of Animal Science: Faculty Publications
Nitrogen losses from cattle feedlots are a concern due to loss of valuable N and enrichment of the atmospheric N pool. Nutritional methods to decrease losses would have economic and environmental benefit. One method to decrease N losses is by increasing carbon on the pen surface. From a management perspective, feeding a diet that will increase carbon may be the most cost effective. Therefore, three experiments evaluated feeding corn bran (less digestible than corn) at either 0, 15, or 30% of the diet. The 15 and 30% bran diets increase organic matter (carbon) excretion by approximately 0.5 and 1.0 kg/steer/d, …
Nf01-491 The Corn Stalk Nitrate Test, Charles A. Shapiro, Richard L. Deloughery
Nf01-491 The Corn Stalk Nitrate Test, Charles A. Shapiro, Richard L. Deloughery
University of Nebraska-Lincoln Extension: Historical Materials
This NebFact is about several soil and plant nitrogen tests that have been developed for use, before planting or mid-season, to help farmers decide how much nitrogen to apply to their corn.