Potential use of milk urea nitrogen to abate atmospheric nitrogen emissions from Wisconsin dairy far

This study evaluates how associative changes in dietary crude protein, milk urea nitrogen, and urinary urea nitrogen affect atmospheric nitrogen emissions from dairy farms while discussing challenges and opportunities


Powell JM, Rotz CA, and Wattiaux MA
Journal of Environmental Quality 2014 Journal Article

Potential for Reducing On-Farm Greenhouse Gas and Ammonia Emissions from Dairy Cows with Prolonged

This study explores the effects of long-term condensed tannin (Quebracho and chestnut extracts) addition to dairy cow diets on enteric methane, nitrous oxide, and ammonia emissions from manure.


Duval BD, Aguerre M, Wattiaux M, Vadas PA, et al.
Water, Air, & Soil Pollution 2016 Journal Article

Penn State Dairy Production and Management Online Course

In this free eight-week online course, you will gain a broad and comprehensive understanding of all aspects of dairy management such as genetics, nutrition, reproduction, animal health, farm economics, and sustainability of dairy production systems. There’s something here for everyone whether you are just looking for the basics or have years of experience in the dairy industry.


Penn State University 2015 Web Page

Got pasture? How grazing intensity affects the environmental impacts of dairy systems

A Wisconsin dairy farm was modeled to evaluate greenhouse gas emissions, net energy intensity, and land use of confined dairy systems with increasing levels of pasture in the diet. Enteric methane was the greatest contributor to GHG emissions, and the production of crops was the most energy-intense process.


Aguirre-Villegas HA, Passos-Fonseca TH, Reinemann DJ, and Larson RA
J. Dairy Sci. 2017 Journal Article

Diet strategies to reduce amounts of Nitrogen and Phosphorous in dairy rations

Presents strategies to balance rations and group and feed animals according to their nutrient needs.


Virginia Tech 2009 Fact Sheet