Beef Blood is a highly nutritious source of vitamins and minerals. High in iron, B vitamins and many others. This comes frozen. I usually thaw it and refreeze in ice cube trays and then store in a ziplock bag. Blood from red meat provides several vitamins and minerals that poultry cannot. The most nutrias meat is red meat for dogs so this is a great way to provide additional nutrients when feeding poultry. Adding blood to meals does not remove the need feed red meat but helps if you feed a high poultry diet.