A yeаrling pаint cоlt is аdmitted fоr castratiоn. The animal weighs 700lb and the veterinarian wants to use the following regimen: butorphanol (10mg/ml) IV at 0.02mg/kg; xylazine (10mg/ml) IV at 0.2 mg/kg; and ketamine (100mg/ml) IV at 2.2mg/kg. How much ketamine should be administered?