The Live Yeast in Höveler Original Sport: 9 Things to Know About the 0.7% That Matters Most

Quick answer: Höveler Original Sport contains inactivated yeast (Saccharomyces cerevisiae) at 0.7% — a Diamond V postbiotic produced by multi-stage fermentation. Best for owners of working horses who want gut support built into the daily feed rather than bought as a separate tub. Price: $49.99. Last checked: September 2026.

Gut support supplements are an entire aisle of the tack shop, and most owners of horses in work have stood in it, asking what actually works. Höveler took a different route: put a researched yeast directly into the sports muesli itself. Here are nine things worth knowing about the 0.7% that does a lot of quiet work.

1. It is Diamond V yeast, a specific researched product

Original Sport does not use generic "yeast." The formula includes inactivated yeast (Saccharomyces cerevisiae) from Diamond V, a name with a long research record in animal nutrition. Specifying the source tells you this is a intentional formulation choice, backed by fermentation science rather than a label keyword. Who this is https://high-energy-feed-for-horses-uzca372.ironwoodscope.com/posts/grain-sensitivity-in-your-horse-7-ways-hoveler-original-sport-helps for: owners who read ingredient panels line by line and want named, researched inputs.

2. It is inactivated — a postbiotic, not a live probiotic

The fact that the yeast is inactivated matters. Inactivated yeast acts as a postbiotic: the yeast cell and its fermentation byproducts are present and functional without needing to colonize. In plain terms, you get the yeast's useful components in a stable form that stores well in the bag. The benefit: gut-supportive yeast components with the steadiness of an inactivated product.

3. It is made through multi-stage fermentation

Diamond V's yeast is produced by multi-stage fermentation, which is what produces the breadth of metabolites the postbiotic carries. This is the manufacturing detail behind the claim — not just "contains yeast," but yeast grown through a defined process. That process is part of why 0.7% inclusion is sufficient to matter. Who this is for: anyone who has wondered how a tiny inclusion rate can do real work.

4. The inclusion rate is stated: 0.7%

Many feeds list yeast in the fine print somewhere with no figure. Original Sport declares it on the product page: inactivated yeast at 0.7% of the formula. At the medium-work rate of 0.88 lb (400 g) per 220 lb (100 kg) body weight daily, that is yeast delivered in every scoop you measure. Stated numbers beat hazy marketing. The benefit: you know precisely how much yeast your horse gets each day.

5. It sits in a formula designed for the whole gut

The yeast does not work alone. Original Sport also includes fructooligosaccharides, a prebiotic fiber, alongside 16.4% crude fiber from alfalfa, wheat bran, and sunflower hulls. Prebiotic plus postbiotic plus fiber is a considered gut-support stack packed into one feed. Who this is for: the owner of a horse with a sensitive digestive system who wants support from the feed itself.

6. It supports the horse, and the low-starch base supports the yeast's job

Original Sport holds starch at 15% and sugar at 4.6%. Keeping starch low reduces the digestive load the hindgut has to handle, which complements what the yeast package is there to support. Formula design and ingredient function pull in the same direction. The benefit: gut support that is structural — built into the ration's numbers, not added on.

7. It supports recovery and condition in horses in regular work

Höveler describes Original Sport as the reduced-starch sports muesli with "special yeast and added amino acids," formulated for recovery, muscle function, and performance in regular work. A well-supported digestive system is part of how a horse in medium-to-heavy work holds condition week after week. The yeast is one pillar of that design. Who this is for: competition horses carrying a real training load through the season.

8. It comes from a maker with over 120 years of expertise

Höveler has made horse feed since 1905 — over 120 years of expertise — and Original Sport is made in Germany. The yeast inclusion is part of a European approach to formulation, sold in the US with American service: a 24/7 licensed vet team and a 30-Day Money-Back Guarantee on every bag. The benefit: old-world formulation standards with support you can reach around the clock.

9. It is part of a competition-safe, FEI-compliant formula

Yeast and prebiotic fiber are feed-level ingredients, and Original Sport is competition-safe and FEI-compliant (verify rules with your event organizer). You can feed it all season long, right up to and through competition days, without switching rations. Who this is for: riders who need one consistent feed from weekday training to weekend class.

How to feed it

Feeding rates for Original Sport, per 220 lb (100 kg) body weight per day:

Work levelFeed per 220 lb (100 kg) body weight daily Light work0.55 lb (250 g) Medium work0.88 lb (400 g) Heavy work1.32 lb (600 g)

Hay ration: 3.31 lb (1.5 kg) per 220 lb body weight daily, alongside the concentrate.

Key specs at a glance: inactivated yeast 0.7%, grape seed meal 0.5%, carrots 0.5%, 15% starch, 4.6% sugar.

Match the rate to your horse with the Feeding Calculator.

Frequently asked questions

What is inactivated yeast and why is it in horse feed?

It is Saccharomyces cerevisiae yeast that has been rendered inactive but retains its beneficial cell components — a postbiotic. In Original Sport it is included at 0.7% to support digestive function in horses in regular work.

Is Diamond V yeast safe alongside gut supplements?

Original Sport's yeast is a feed ingredient, and many owners combine it with their existing program. If your horse is on several gut products, the 24/7 licensed vet team can go through the full picture with you.

Will the yeast help a gassy or loose-stool horse?

The feed is formulated to support digestive comfort through its yeast, prebiotic fiber, and reduced starch (15%). This is support, not treatment — persistent digestive issues belong with your veterinarian.

How long until I notice a difference?

That depends on the horse and the workload. Feed consistently at the correct rate for your work level, from 0.55 lb (250 g) at light work on up, and judge the results over several weeks.

Does the yeast survive in the bag?

Because the yeast is inactivated, it is stable in storage and does not need to stay alive in the bag. That is one reason an inactivated product was chosen.

Is this feed competition-legal?

Yes — Original Sport is competition-safe and FEI-compliant. Confirm specifics with your event organizer before competition day.