A Quantitative Assessment of Beneficial Management Practices to Reduce Carbon and Reactive Nitrogen Footprints of Dairy Farms in the Great Lakes Region

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Assessing and improving the sustainability of dairy production is essential to secure future food production. Implementation of Beneficial Management Practices (BMPs) can reduce carbon and reactive nitrogen footprints of dairy farms. BMPs can and have been developed for different farm components, including feed, manure management and field cultivation practices.…

Intake and Digestibility of Nutrients, Manure Production, and Nitrogen Excretion as Affected by Nonfiber Carbohydrate Sources and Rumen Degradable Protein Levels in the Diet of Dairy Cows

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This study was to determine the effects of nonfiber carbohydrate (NFC) sources and rumen degradable protein (RDP) levels in diet on apparent total-tract nutrient digestibility, manure production and nitrogen (N) excretion in dairy cows.…

Transferring Knowledge of Dairy Sustainability Issues Through a Multi-layered Interactive “Virtual Farm” Website

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The goal of the Sustainable Dairy “Virtual Farm” website is to disseminate research-based information to diverse audiences from one platform. This is done with layers of information starting with the mSustainable dairy logoost basic then drilling down to peer-reviewed publications, data from life-cycle assessment studies and models related to the topics.…

Climate Change Mitigation and Adaptation in Dairy Production Systems of the Great Lakes

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To better understand how dairy agriculture can reduce its impact on climate change, the USDA has supported a large, transdisciplinary research project to examine dairy production systems across the Great Lakes region of the United States. The goals of the Sustainable Dairy Coordinated Agricultural Project are to identify where in the life cycle of a dairy system can beneficial management practices (BMP) be applied to reduce greenhouse gases (GHG) without sacrificing productivity or profit to the farmer.…

Use of zilpaterol hydrocholoride to reduce odors and gas production from the feedlot surface when beef cattle are fed diets with or without ethanol byproducts


Many malodorous compounds emitted from the feedlot surface of beef finishing facilities result from protein degradation of feces and urine (Mackie et al., 1998; Miller and Varel, 2001, 2002). The inclusion of wet distillers grain with solubles (WDGS) in beef finishing diets has been shown to increase nitrogen excretion (Spiehs and Varel, 2009; Hales et al.,…

Measuring Pasture Dry Matter Intake of Horses

Why Is It Important to Accurately Measure Horse Dry Matter Intake?*

The ability to predict a horse’s rate of pasture dry matter intake (DMI) assists horse owners/managers in accounting for pasture’s contribution toward a horse’s daily nutrient requirements. Accounting for nutrients obtained from pasture improves the ability to accurately balance rations thereby preventing inefficiencies associated with over- or under- feeding nutrients.…

Equine Pasture Management Introduction


Sound grazing management strategies for horses have beneficial impacts on horse health, the environment, and the overall cost of keeping horses. This presentation explains how the fundamental principles of horse grazing behavior, horse nutrient requirements, plant chemical composition, and plant physiology are integrated in the development of sound grazing management strategies.…

Effect of Grazing Cell Size on Horse Pasture Utilization

Purpose *

Horses grazing continuously within a single pasture often graze selectively resulting in under- and over-grazed areas. The net result is inefficient use of forage and/or eventually loss of ground cover. This practice contributes negatively to pasture health and the environment. Rotational grazing can alleviate this problem by forcing horses to be less selective due to constraints on space and time allowed for grazing.…