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Tasco®- AOS  

Superior Prebiotics to Help Keep Your Horse Healthy

EQUIDAE Horse Feed is proud to include Tasco® - AOS in our feed because your horse deserves the best. A healthy gastrointestinal (GI) system is essential to the general overall health of a horse. When Tasco® is incorporated into the horse's ration, we can see responses such as:

  • Reduced gas and/or colic
  • Fewer occurrences of laminitis
  • Increase in beneficial GI tract microorganisms
  • Improved digestion and absorption of nutrients
  • Enhanced immune systems
  • More protection against infection

With over 20 years of research by Acadian AgriTech, Tasco® has been shown to be particularly effective in improving the productivity of livestock production systems. Recent research has shown Tasco® to have potent prebiotic activity in a wide variety of animals. Tasco® is an all natural food ingredient derived from the brown algae, Ascophyllum nodosum. Tasco® contains important sources of complex sulfated polysaccharides that provide unique properties and distinctive characteristics not found in terrestrial plant sources or other common marine plants.

Understanding Prebiotics

Prebiotics are natural, non-digestible food ingredients that stimulate the growth or activity of healthy bacteria in the digestive system; helpful for improving the immune system. The use of prebiotics is a different approach to changing the mix of microorganisms present in the gastrointestinal (GI) tract of horses.

GI Tract Health Benefits

The overall health of horses is largely determined by the health of their GI tract. The status of an animal's immune system can also be determined by its GI tract health. In fact, estimates show that approximately 70% of the immune competency of an animal is determined by its GI tract status. An immune system that is in good health is able to address attacks by external organisms or stressful environmental situations much easier and more effectively than a compromised immune system. Early and effective activation of the immune system reduces the energy required to combat infection or disease and thus improves overall health.

A Healthy GI Tract

  • Supports a healthy immune system
  • Promotes a healthy and shiny coat
  • Supports digestive tract health
  • Reduces negative effects of stresses

Tasco® - AOS a Potent Prebiotic and More

Current research has shown that the combination of alginate polysaccharides and AOS from Tasco® - AOS is approximately five times more effective at 0.5% of the dietary intake than is inulin at 2.5% intake.

Fives Times More Potent Than Inulin








Tasco® - like Alginate Oligosaccharide (AOS) is 5x more potent than fructo-oligosaccharide (FOS) (inulin) the standard prebiotic reference1.







Tasco® - AOS

Tasco® is suitable for all classes of horses - young, growing horses, horses at work, mature, idle horses, pregnant mares and lactating mares. Use of this ingredient should be considered an essential part of a healthy feeding program for any equine management system.

The Tasco® processing facility holds an organic certification by Pro-Cert Organic Systems Ltd. The operation is compliant with the OC/PRO Organic Standard, the Canadian Organic Standard, EEC Regulation 2092/91, the United States Department of Agriculture (USDA) National Organic Program (NOP) and the Quebec Organic Reference Standard (CARTV).









1Wang et al., 2006. Nutrition Research 26, 597-603.