Calf's Choice Total Colostrum HiCal, Calf's Choice Total Colostrum is made only from natural, premium quality bovine colostrum. It is an excellent source of IgG (over 85% in the form of IgG1), colostral fat, growth factors, and nutrients needed to improve calf survival, health, growth, and long term performance. Not a manufactured formula based on blood serum, whey, eggs, vegetable fats or other ingredients not naturally found in colostrum. Directions: Replacement Colostrum - Mix 1-2 bags (700 gms) with 5-10 cups hot water. Supplemental Colostrum - Mix 1/2-1 bag with 2.5-5 cups hot water. Feed as soon as possible after birth by bottle or esophageal feeder. In an efficacy study, calves fed at recommended level of 2 bags achieved average serum IgG levels of 14.5 mg/ml and average serum total protein levels of 5.4 gm/dl. 18 kg pail will be drop-shipped (special order) from the manufacturer, please allow up to 2 weeks for delivery.