NAF Biotics Supplement. NAF Biotics Supplement is a unique combination of pre and probiotics designed to maintain healthy gut function. NAF Biotics contains live yeasts to support gut health and fructo-oligosaccharides to support the growth of micro-organisms in the digestive tract. The pro and prebiotic ingredients work in harmony to support healthy, natural and normal digestive function. NAF Biotics Supplement is ideal for hard working horses, competition and performance horses, horses recovering from antibiotic treatment and horses and foals prone to digestive upset. Read more… Horses and Ponies Recommended Daily Amounts Loading Rate - 60g per day = 4 scoops per day Maintenance Rate - 30g per day = 2 scoops per day Foals Recommended Daily Amounts Loading Rate (should be fed on advice from a vertinary surgeon) - 45g per day = 2 scoops Maintenance Rate - 15-30g per day = 1-2 scoops per day A 300g tub fed at Maintenance Rate will last approximately 10 days. For a 1 week intensive course feed Loading Rate for 3 days followed by Maintenance Rate.