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Bill Mahanna

Bill Mahanna

Mahanna is a board-certified nutritionist with DuPont Pioneer and an adjunct professor at Iowa State University.

Nutritional Sciences Manager / Pioneer
Email Bill Mahanna
Articles

ARTICLES

TMR centers: What the U.S. can learn from the Japanese

September 20, 2013
Bill Mahanna
I have made about a dozen trips to Japan over the last decade to work with dairies on the north island of Hokkaido. While the Japanese are internationally known for “Kaizen,” referring to a focus on continuous improvement of processes in manufacturing, engineering and business management, it is impressive how quickly they adapt ideas from around the world into their dairy sector.
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1412pd mahanna 1 full

Drought lessons learned the hard way

September 19, 2012
Bill Mahanna
The stressful growing condition much of the country is currently experiencing is the fourth time agriculture has been devastated by drought in the last 100 years. Most of us have at least seen documentaries or read John Steinbeck’s novel The Grapes of Wrath, about the Dust Bowl. This seven-year drought affected much of the U.S., with 1934, 1936 and 1939 being the most devastating years.
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Fermentrics: A new ration evaluation tool

April 9, 2012
Bill Mahanna
Fermentrics is a nutritional diagnostic report unique in that it contains data generated from a novel, gas-fermentation method popular among European academic researchers. There are only a few university and corporate product development research labs in North America with gas-fermentation systems and they are not capable of processing and handling the sample volume needed in a commercial offering.
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silage

Rethinking corn silage chop height: How low should you go?

August 12, 2011
Bill Mahanna
Many growers today are looking for ways to maximize corn yields and on-farm profitability, whether that means increasing milk production, reducing ration costs or boosting weight gain in beef cattle.
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Evolution of inoculants as a forage management tool

July 20, 2011
Bill Mahanna
Dairy producers and their nutritionists are constantly looking for ways to improve forage yield and nutritional quality. This includes areas such as: Hybrid or variety selection Use of crop consultants to help manage agronomic issues Harvesting at optimal crop maturity Wide-swathing alfalfa or high-chopping corn silage Ensuring proper chop length (and kernel processing in corn silage), proper moisture, silage compaction and use of oxygen-barrier film and plastic to protect against surface spoilage Silage inoculation Proper face management to reduce nutrient loss and improve palatability Increased understanding of how length of time in fermented storage changes feed digestibility
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