IMMAG Updates

June 2017

Welcome to the monthly update for the Iowa Manure Management Action Group (IMMAG) Web site. This update is provided as a service to inform you about changes made to the IMMAG Web Page or items of interest dealing with manure management and air quality from animal feeding operations. If you wish to subscribe to this mailing please click here. You may also view this update with direct links on the CURRENT NEWS site on IMMAG.

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Diet Manipulation Can Be Used to Reduce Odor

Nutrient input reduction and nutrient form modification have been shown to be helpful in reducing odor, ammonia levels, hydrogen sulfide levels, and dust and particulates. By providing nutrient inputs that are suited to the needs of the animal, overfeeding nutrients is avoided, and in turn, reduces the amount of excreted nutrients. Utilizing phase feeding, lowering crude protein, or adjusting grind particles size are just several feed management and diet formulation practices which have been shown to reduce emissions. Benefits include; impacting multiple emissions, easy implementation when working with a nutritionist, and in many cases, the changes may cost very little.  However, the availability of additives, feedstuffs, and the costs may fluctuate. More information about diet manipulation can be found on the Air Management Practices Assessment Tool website.

Dairy Month and Dairy Manure

jersey cowsDairy month, a great excuse to nibble on some ice cream with strawberries, rehydrate with a glass of ice cold milk, or to behold the power of cheese. But in this newsletter, it also means it’s a chance to think about the back end of the cow and the manure. This year we decided to take a stroll down memory lane to see how improvements in milk production and changes to manure characteristics have changed over time. We also wanted to see what it means for sustainability. Milk production per cow has increased dramatically, while manure production has slowly increased. Today’s dairy cow produces less manure  per gallon of milk than ever before. Check out the details on The Manure Scoop.

Animal Agriculture Education Project Launched

The EPA recently launched the Animal Agriculture Education Project, which is a series of educational modules featuring videos, virtual farm tours, and discussion topics including manure management decision-making and water quality protection measures. The Animal Agriculture Education Project is accessible on the Livestock and Poultry Environmental Learning Center website.


June 23, 2017 -- Manifold Distribution and Calibration Field Day, ISU Allee Research and Demonstration Farm, Newell

June 27 - 29, 2017 -- Nitrogen and Water Week, multiple locations

June 29, 2017 -- Iowa Swine Day, Scheman Building, Ames

July 26, 2017 -- Manure Distribution and Calibration Field Day, Zoske’s Sales and Service, Iowa Falls

August 4, 2017 -- Manure Distribution and Calibration Field Day, Eldon C. Stutsman, Inc., Hills

August 22-23, 2017 -- North American Manure Expo, Arlington, WI


Dan Andersen
(515) 294-4210
Twitter: @DrManure

Rachel Kennedy
(515) 294-6685

Melissa McEnany
(515) 294-9075


Iowa Manure Management Action Group
Twitter: @iowamanure

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