Liquid b12 dosage for 3lb lamb? Durvet High Level Vitamin B Complex Livestock Supplement, 250 mL at Tractor Supply Co Cyanocobalamin Vitamin B12 Supplement, 5,000 mcg mL, 100 mL at Tractor Supply Co Rooster Booster Liquid B 12 Supplement 32 Oz 960 CC Multi Species Vitamin B 12 Injection, 5,000 mcg mL, 100 mL at Tractor Supply Co Rooster Booster Sheep and Goat B12 Liquid Supplement, 16 oz. at Tractor Supply Co