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Winter Feeding Alternatives for Beef Cattle – Utilization of Grass Straw. Carl Hunt Department of Animal and Veterinary Science University of Idaho Kristen Johnson Department of Animal Sciences Washington State University.
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Winter Feeding Alternatives for Beef Cattle – Utilization of Grass Straw • Carl Hunt • Department of Animal and Veterinary Science • University of Idaho • Kristen Johnson • Department of Animal Sciences • Washington State University
Factors affect ammoniation response:How can we reduce level from 5%? • Bale density • Can ammonia penetrate dense bales? • Moisture content • Is grass straw too dry?
Treatments: Measure composition and in situ degradablity • 2 bale densities • Conventional and 75% • 3 moisture levels • Dry, 12 and 18% • 3 ammoniation levels • 0, 3 and 5%
Statistically greater than 6 of the 12 ammoniated treatments! Control =42.3 36-hour in situ degradation: bale density, moisture and ammonia level
Statistically greater than 7 of the 12 ammoniated treatments! Control =61.7 96-hour in situ degradation : bale density, moisture and ammonia level