Purina Wind & Rain Sheep Mineral is a premium loose mineral designed for all classes of sheep. Formulated to optimize the most demanding of production goals with and manufactured with our patented Wind & Rain technology that helps reduce clumping, therefore reducing waste and promoting more consistent intake. Contains Zinpro Availa Zinc to support immune function, hoof health, and reproductive success. This sheep mineral is intake is just one ounce per head per day. Wind & Rain Feed Technology - Patented manufacturing process that reduces waste and clumping, leading to less waste and more consistent intake Contains Zinpro Availa Zinc - Supports immune function, hoof health, and reproductive success Large particle size ingredients - Resistant to wind losses and rain damage to protect investment in mineral and help achieve performance and profitability goals Economical - Optimum intake is just one ounce per head per day Super-fortified with antioxidants - Supports overall immune function