NAF Five Star Superflex Senior 660g. NAF Five Star Superflex Senior uses a unique formula that supports older horses still leading active lives. NAF Five Star Superflex Senior provides NAF's highest specification of key nutrients with rich Omega 3 fatty acids and antioxidants that are naturally sourced. Horse and Ponies Recommended Daily Amounts Loading Rate (3-10 days) - 44g per day = 6 scoops per day Maintenance Rate - 22g per day = 3 scoops per day Low Maintenance Rate- 14. 5g per day = 2 scoops per day 660g will last approximately 30 days when fed at maintenance level. Read more… A level 10ml scoop provides approx 7. 3g.