By Andi Anderson
On the surface, the soybean fields at Preston Farms in southern Michigan look ordinary. But beneath the leaves lies a game-changing innovation that’s saving the fourth-generation dairy farm tens of thousands of dollars each month — and could revolutionize dairy farming across North America.
In spring 2024, Preston Farms dedicated 400 acres — nearly a third of its land — to growing a special variety of high-oleic soybeans developed through federally funded research at Michigan State University’s College of Agriculture and Natural Resources. The goal: improve milk quality and reduce feed costs.
“We took a risk,” said Brian Preston, MSU alum and farm manager. “Those acres could’ve been corn or grain. But within three days of feeding the soybeans to our cows, we saw a measurable increase in milk fat and protein — and a 20% drop in purchased feed costs.”
Science Meets the Soil
The breakthrough stems from years of research led by MSU professor Adam Lock, whose team has studied the impact of dietary fats on dairy cows for over a decade. High-oleic soybeans, rich in oleic acid, showed promise in boosting milk composition and farm profitability.
“Our work is focused on practical, science-based feeding strategies,” Lock said. “High-oleic soybeans are a natural extension of that mission.”
Supported by USDA’s National Institute of Food and Agriculture, the Michigan Alliance for Animal Agriculture, Michigan Milk Producers Association, and United Soybean Board, Lock’s research confirmed that roasting the soybeans before feeding could further enhance milk production.
A Model for the Future
Preston Farms now roasts soybeans on-site, replacing costly fat and amino acid supplements. Demand for the seed has surged, with Michigan suppliers running out last season.
“This isn’t just about our farm,” said Glenn Preston, owner of Preston Farms. “It’s about building trust in science and strengthening Michigan’s ag economy.”
The farm’s long-standing relationship with MSU — dating back to the 1940s — has been key to its success. “MSU helps our business, which means we’re able to be here for another generation,” Glenn added.
Better Dairy for Michigan Families
Michigan’s dairy industry contributes \$15.7 billion to the state economy and supports over 850 farms. Innovations like high-oleic soybeans mean better milk, cheese, and yogurt for consumers — and more sustainable, profitable operations for producers.
“This could change our entire industry,” Brian Preston said. And with MSU’s new Dairy Cattle Teaching and Research Center, more producer-focused breakthroughs are on the horizon.
Photo Credit:digital-visionphotodisc-photo
Categories: Michigan, Livestock, Dairy Cattle