A student from the veterinary school at the University of Minnesota-Twin Cities collects a blood sample July 17 at Yorek Dairy Farm LLC.near Sobieski, Minnesota. In all, the students visit the farm three times to collect information that will be used in a presentation during the final visit summarizing cow comfort, health and nutrition. At the Yorek farm, the total herd of 1,100 cows is milked in a double-16 parallel parlor.
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