Sunflower seeds come in 2 basic classifications with some specialized varieties in each. Black oil sunflower seeds are primarily produced for sunflower oil production, and striped sunflower seeds are primarily produced for confectionary/human consumption. Black oil sunflower seeds will be about 17% protein, 44% fat and 24% neutral detergent fiber (NDF). Striped sunflower seeds will be about 16% protein, 24% fat and 40% NDF. The hull of the sunflower is fairly tough and is not very digestible and the horse may not break all of the hulls when eating the seeds, so some may pass thru undigested. (The birds in your pasture will appreciate this!). 20/25/50kg pp bags or 20/25kg Kraft paper bags other package as customer requested 20ft SP container can load 8 to 12 tons 40ft HQ container can load 20 to 25 tons.