What size needle for B12 injections in goats? Butafosfan 10% & Vitamin B12 Injection Vet Clinic Veterian Anthelmintic with High Quality for Sheep, Goat, Cattle, Cow High Potency Vit B Complex Injectables Affordable Price & Effective for Veterinary Needs Rooster Booster Sheep and Goat B12 Liquid Supplement, 16 oz. at Tractor Supply Co How to give an IM injection in livestock 1 Restrain the animal properly. 2 Clean injection site with alcohol. 3 Inject into thick muscle (neck or thigh area). 4 Insert needle Liquid B 12 Supplement PBS Animal Health