Hexagon Nutrition Pvt. Ltd. Supplies Water Miscible Liquid Feed Supplement for Poultry. Hexagon Nutrition Pvt. Ltd. Is an ISO 9001: 2000 and HACCP certified company. The Water Miscible Liquid Feed Supplement for Poultry, ‘Aquavit Forte A’ is a liquid feed concentrate of Vitamin A. This improves hatchability and increases egg production.