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Digestive Solutions for Weaned Pigs

KEM-GEST is a blend of organic and inorganic acids designed to provide an economical means to acidify swine feed. Swine producers have successfully used it for years as a solution to improve a weaned pig's ability to digest complex soy-based diets. 

Features and Benefits of Acidifiers in Nursery Piglet Diets

KEM-GEST contains a blend of acids, including lactic acid, and is a cost-effective means of providing feed acidification to swine diets. In addition to its long history of industry use and positive results, this flowable, dry product is easy to handle and simple to add to feed.

KEM-GEST supports the nursery pig's gastric acidification system, improving the gut barrier function of the intestinal tract. It also helps reduce urine pH in piglets and improve activity of gastric enzymes post-weaning, improving digestion for pigs.1


A multi-acid approach benefits nursery pigs with needed hydrochloric acid (HCl) production in the stomach and also helps protect the gastrointestinal tract from growth limiting pathogens, which promotes production efficiency. By improving the digestion and reducing harmful pathogens with added acids in the pigs' diets, they have a better chance for healthy growth rates. Additionally, by reducing the urine pH in piglets, it can reduce the amount of ammonia emitted into the air, positively impacting the animals' overall health.

Why Should I Use Diet Acidifiers?

Young pigs have a limited ability to produce HCl in the stomach. HCl production is small at birth but increases with advancing age. The greater the production of acid in the stomach, the lower the gastric pH. Adding a blend of acids can improve digestion for pigs and reduce harmful pathogen loads. The pH in the stomach can regulate the movement of viable bacteria to the small intestine.

Every acid dissociates (loses its H+ ions) at its own rate. Inorganic acids dissociate quickly, causing a rapid drop in pH of a solution. Organic acids are slower to dissociate. KEM-GEST provides the added benefits of both acids to piglet diets.

How Organic Acids Kill Bacteria2

  1. A blended solution of organic acids is placed into an environment where bacteria is present
  2. Intact acid molecules enter the bacteria cell through the cell wall
  3. Intact acid molecules give up their H+ ions inside the bacteria cell to lower the pH
  4. pH of cytoplasm drops rapidly, and the cell's energy is used up attempting to pump H+ ions out of the cell
  5. The integrity of the cell wall may weaken and rupture, causing the bacteria to die

An acid with more intact acid molecules (more H+ ions available) at a given pH will have a greater ability to kill bacteria.2

Figure 1. Bacteria cell

KEM-GEST Impacts Nursery Pigs in Two Ways

Impact 1

  • Phosphoric acid is delivered to the stomach of the pig.
  • HCl production is stimulated, which is lacking at weaning. This improves digestion in piglets.

Impact 2

  • Organic acids (fumaric, citric and lactic) are delivered to the hind gut for additional benefits in piglet diets.

Kemin Triple Check

The Kemin Triple Check portfolio program helps establish intestinal integrity and protection. Kemin offers products to CLEAN UP contaminants in feed and water prior to animal exposure, BUILD UP intestinal strength and immunity to reduce leaky gut and KNOCK OUT harmful pathogens for healthier and better performing poultry.

KEM-GEST was developed for the KNOCK OUT category by supporting intestinal balance to inhibit or eliminate harmful pathogens from infiltrating the body.

Product Specifications

Include KEM-GEST in nursery pig diets to improve efficiency. Add 4 lbs. per ton of feed for one week post-wean, then include 2 lbs. per ton of feed for two more weeks.

KEM-GEST Spec Sheet


Impact of Various Acid Treatments Durin...
KEM-GEST One Pager



1Dibner, J. J. Feedstuffs. October 27, 2003, Vol. 75, Issue 44, P. 12.
2Hirshfield, Irvin N., Stephanie Terzulli, and Connor O'Bryne. Weak organic acids: A panoply of effects on bacteria. Science Progress. November 2003. Vol. 86, Issue 4, P. 245-269.

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