AMPLI-Calf® Tanbark Challenge®, the annual show ring sweepstakes sponsored by Land O'Lakes Purina Feed, has announced four winners from this years' competitive group of calves. Those exhibiting AMPLI-Calf®-fed spring calves at the 2011 All-American Dairy Show in Harrisburg, Pa., World Dairy Expo in Madison, Wis., or the North American International Livestock Exposition held in Louisville, Ky., were eligible to participate. The owners of the highest placing spring calves in the top 10 of their class were recognized for their show ring success and showcasing the AMPLI-Calf® feed advantage with a personalized AMPLI-Calf® Tanbark Challenge® jacket along with a $50 cash prize. This year's Tanbark Challenge® winners include: All-American Dairy Show • Guernsey: Doug Evans, Georgetown, N.Y. World Dairy Expo • Jersey: Roger Riebe, Cumberland, Wis. North American International Livestock Exposition • Holstein: Tony Broshes, Urbana, Oh. • Jersey: Roger Riebe, Cumberland, Wis. AMPLI-Calf® feed, a blend of unique, proprietary ingredients, has revolutionized calf nutrition programs across the country. Calves fed AMPLI-Calf® Starter feed are more aggressively consuming feed at a younger age, and have the potential to grow faster, with more height, length and width than calves on other brands of feed. Now, the AMPLI-Calf® feed growth and development advantages can also be continued post-weaning with AMPLI-Calf® Grower feed, which is formulated for calves age 12-24 weeks. AMPLI-Calf® Starter feed is available with 20 or 22 percent protein and both AMPLI-Calf® Starter and AMPLI-Calf® Grower feeds are now available from Land O'Lakes Purina Feed dealers. Breeders can visit, call 1-800-237-9895, or ask their local Land O'Lakes Purina Feed Calf and Heifer Specialist to learn more about how to integrate AMPLI-Calf® feed products into their feeding program. Land O'Lakes Purina Feed LLC is North America's leading feed company serving producers nationwide through local cooperatives and independent dealerships by providing an extensive line of animal nutrition, ingredients and expertise. 12.02.2011