A 30% protein high-energy controlled consumption cattle tub. Purina 30% Protein Hi-Energy Cattle Tubs are free choice supplements designed for beef cattle on medium to high quality forage diets (over 8% protein). The low moisture, cooked molasses products in non-returnable plastic containers will enhance intake and utilization of available forages, while potentially reducing labor for producers. 60 lbs. Click here for guaranteed analysis and more information.