RangeLand Calf Creep 14 & 16 Mineral Supplement for Calves Catalog Purina RangeLand Calf Creep 14 & 16 Mineral Supplement for Calves Manufacturer : Purina Animal Nutrition LLC. Description Purina® Rangeland® Calf Creep is a supplement that is designed for suckling beef calves. It supplements the cow’s milk to improve the growth rate of calves with good genetic potential. Rates Please contact us for current pricing and availability.