Mature Cattle: (milking or on full feed) 1 to 3 lb to each 100 lb feed.
Calves: (bucket fed) 1 to 2 tablespoonfuls daily in milk or ground feed.
Range Cattle: 1 part to 10 parts salt; To prevent the oxidation that tends to destroy all Vitamin A compounds on prolonged exposure, mix only the amount normally consumed in a 3-week period.