Equestrizone - ZoneBiotics® (Yea-sacc)
Equestrizone - ZoneBiotics® (Yea-sacc)

Equestrizone – Zonebiotics (Yea Saac) Sale!

£15.95 £6.50

In Stock

Formerly known as Yea-sacc. Scientifically proven to aid digestion, helping make the best possible use of dietary nutrients


Short dated product – Best before December 2019.


Equestrizone’s ZoneBiotics for horses (Saccharomyces cerevisiae 1026) is a live yeast culture which has been scientifically proven to improve a horse’s ability to digest fibre (Glade & Sist 1987) and to increase microbial fermentation in the hind gut. Yea-Sacc for horses helps to stabilise the correct natural balance of good bacteria in the intestine, which the horse relies on for good gut health, digestive function and efficient immune function.

Zonebiotics contains a new concentrated form of the live yeast culture, which is fed at a much lower rate than the original yeast. Nutritious and palatable oat fibre and dried alfalfa are added to ensure an accurate feeding rate of the live yeast. Both ingredients are fibrous, safe and palatable inclusions that have been carefully selected to ensure that Zonebiotics is highly palatable and effective. Oat fibre is a source of healthful soluble fibre, as well as being rich in B-complex vitamins, and alfalfa is rich in antioxidants carotenes, minerals including calcium, and contains highly digestible fibre.

Zonebiotics helps to stabilise the hindgut (caecum and colon) beneficial bacterial populations. A healthy, stable hindgut is imperative for horses to remain in optimum condition. Yea-Sacc enhances the activity of fibre-digesting bacteria in the hindgut and increases their efficiency which in turn increases the digestibility of fibrous feeds. This means that horses and ponies taking this probiotic can make more efficient use of nutrients including vitamins and minerals derived from the forage portion of their diet.
Research shows that foals whose mothers are taking this supplement retain more nitrogen, calcium and phosphorus, and grow faster than foals of non-supplemented mares during their first four weeks of life.

Feed Zonebiotics to:

  • Older horses
  • Competition horses
  • Horses on low fibre diets
  • Horses in long-term stressful situations
  • Excitable horses
  • Poor doers
  • To support healthy digestive function
  • Mares in the final few months of gestation
  • Lactating mares
  • Young, growing horses

The benefits of Yea-Sacc as a horse supplement have been documented in many studies over the last 10 years (Mclean et al 1997, Glade 1991, Glade & Sist 1988).


Heavy horse 700kg 7 1.5
Average horse 500kg 5 1
Pony 300kg 3 0.5

A 500g tub fed at 5g per day will last 100 days

1x level 10ml scoop (enclosed)  = 10g

Feed 1g per 100kg body weight. Up to double the amount of ZoneBiotics ® (e.g. 10g rather than 5g daily, for a 500kg horse) can be used for horses with higher requirements


Oat feed, Alfalfa.


Nutrient Unit Amount per kilo Amount per serve
Live Yeast g 200 1


Calcium 0.9%

Phosphorus 0.2%

Methionine 0.1%

Crude protein 14.4%

Crude fibre 21.2%

Crude oils and fats 1.8%

Crude ash 5.8%

Sodium 0.0%

NUTRITIONAL ADDITIVES: Saccharomyces cerevisiae (4a1704) 20 x 1010 (2nd 10 in superscript) cfu/kg

A complementary feed material for horses. Store in a cool, dry place. Replace lid securely to avoid deterioration of contents. Keep out of reach of children

✓ Competition horses, during travelling and intensive schedules
✓ Horses on low fibre diets, or poor-doers
✓ Excitable horses
✓ Supports a healthy digestive function
✓ Lactating mares and mares in the final few months of gestation
✓ Young, growing or older horses


Zonebiotics is a Probiotic for horses containing Yea-Sacc®  which is a live yeast culture based on Saccharomyces cerevisiae strain 1026. It has been scientifically proven to aid digestion so that a horse can make the best possible use of the nutritional contents of its diet.

The digestive system of the horse evolved to serve wild horses which grazed virtually all day on low-quality forage. But with domestication, the way we feed and keep horses has changed and this is what can affect the delicate balance of natural intestinal bacteria and yeast.

Years of extensive scientific research, conducted in collaboration with leading universities and equine research authorities across the world, led to Yea-Sacc® 1026 being granted full European Union authorisation as a feed additive for horses under Commission Regulation (EC) No. 886/2009 back in 2009. Research found that this probiotic can increase the amount of energy released from a horse’s diet and made available to fuel muscles – making it a useful supplementary food for competition and sports horses.

Horses used for racing and eventing often get diets rich on high-starch cereals. Large amounts of starch can throw off the balance of ‘good’ bacteria in the hindgut. Studies have also shown that probiotic for horses Yea-Sacc® 1026 can improve the digestion of protein and the absorption of calcium and phosphorous. All these factors are important for young horses that are still growing, and lactating mares, as well as horses undergoing high levels of work and exercise.

Healthy fermentation of food in the equine hindgut is essential in order for a horse to maintain a healthy immune system and extract the maximum amount of nutrients possible from its diet. Zonebiotics improves the effectiveness of the ‘good’ bacteria that digest bacteria in the hindgut while also supporting good digestive health. This product can help in any situation where stress has caused digestive disturbances in your horse. Stresses and strains caused by such things as competition, travel, illness or changes in environment and living arrangements can quickly upset the delicate balance of ‘good’ bacteria in the equine digestive system.

Probios for horses can be safely fed long-term and is suitable for elderly horses, and to support healthy hoof laminae, because it supports a healthy balance of the bacteria that consume lactic acid and as a result helps to avoid the swings of gut acid that are now said to be a factor in feet problems for horses and ponies.

Equine nutritionist John Chapman, of Gravenhorse Feeds, said that he has found that the probiotics products receiving the best testimonials from customers usually contain live yeast. Saccharomyces cerevisiae has been clearly shown to improve digestibility of a variety of feed ingredients (Glade et al 1987) and support good digestive tract health, he added.

Additional information

Category Digestion, Digestion, gastric & probiotics

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