Our fair is in March and our calf needs to be 1000.Beginning weight 609 He was eating 18lb daily 12% feed plus calf manna and coastal hay but was only at ADG 1.3. We changed feed to purina show chow and his gain is up to 2.1. He has been wormed and re implanted 3 weeks ago. We have added liquid fat and a daily probiotic. He is currently at 850. We have 39 days to gain 150 lbs. calf will not eat more then 20lbs per day(some days less). Any suggestions to get the daily gain up when the calf will not eat more feed?