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Got more milk?
U researchers find that cow comfort boosts yield
Minnesota dairy cows may not be ready to run the Boston Marathon, but they do have a little extra zip in their step these days. Their feet and legs are healthier because University of Minnesota research on cow comfort is encouraging farmers to make substantial changes in dairy cow housing. And comfortable cows produce more milk.
Cow comfort is what keeps University Extension animal scientist Marcia Endres busy. For many scientists, a "laboratory" is a 20-foot bench filled with test tubes, beakers and analytical equipment. But Endres' laboratory includes real-life farms--big sheds filled with muttering and mooing dairy cows.
It was four years ago when Endres, a nutritionist by trade, noticed that cow comfort dominated the hallway talk at dairy meetings. "Everyone was talking and had an opinion, but nobody had any data," says Endres. "We needed to get the numbers."
Those conversations convinced her to redirect her studies and ultimately led Endres and her Extension Dairy Team colleagues to local farms, where they got up close and personal with 5,600 bovines. The Dairy Team scored the cows' physical condition, analyzed their gait, studied their living quarters and combined these observations with a database of cow performance information. The scientific data brought to light the importance of a resilient and comfortable surface for cows to lie on, the design of dairy facilities, and cow management.
Prestigious scientific journals have published Endres' findings. National dairy experts are directing their clients to Minnesota for cow-comfort answers. But the best measure of the Dairy Team's success is that Minnesota dairy farmers are using the research results. "We are seeing much better designed dairy facilities now because of this research," said Jim Salfer, a St. Cloud-based Extension educator. "Producers are also more aware of cow comfort and are asking more questions about the best ways to care for their cows."
Pat Lunemann is one example. The dairy producer from Clarissa, Minnesota, sees the statistical validation for University of Minnesota cow comfort research every time he looks at his bulk milk-storage tank.
"This research [that shows herds with more comfortable cows produce 10 percent more milk] was a real eye-opener," says Lunemann. "I knew my cows weren't as comfortable as they could be, but this research project provided data to show how my cows compared to others with better systems."
He removed concrete from the long rows of platforms where his cows spend most of their time resting between milking. He also got rid of the cow mattresses that covered the platforms in the barn. Now the cows at his family's Twin Eagle Dairy are resting easy on a dirt floor covered with recycled bedding and sawdust.
Besides getting more productive cows from his bed redo, Lunemann spends fewer dollars on maintaining the new free-stall arrangement.
The Extension Dairy Team's "Better living through research" philosophy continues. One project now under way looks at alternatives for cow bedding. Using traditional sources like straw or sawdust, which are potential sources of biofuels, increase cost and limit availability. The team also recently received funding from the Rapid Agricultural Response Fund to compare the health, productivity and comfort of cows housed in three different types of barns. The team will gather data from buildings housing cows throughout the state, and the results will help drive the choices Minnesota dairy producers make when modernizing their buildings. Making the right choice will have a big impact.
As Salfer puts it, "Minnesota needs the dairy industry and the dairy industry needs major investment in new structures. The goal of our research is to help farmers make profitable decisions, and when people make money they stay in business."
For more information on cow comfort, nutrition and milk marketing, visit Dairy Extension.