Don’t settle for poor results when you stop using zinc!

Don’t worry about the production results when you phase out zinc. You can achieve more vital, robust, and heavier piglets if you stop using zinc. And you can even save money on antibiotics, as more robust and healthier piglets need less medical treatment.   

Close to no antibiotics and zero use of zinc

Thomas Jessen, a Danish farmer, produces 23.000 piglets a year. He phased out zinc four years ago without problems. He did it to challenge his business and himself. The farm mixes their feed and have experimented with different doses of the complementary protein EP100i, used to make the transition to a zinc-free production carefree. Diarrhoea still occurs, but it rarely needs any treatment.

“We haven’t been using medicinal zinc oxide for four years and we are well below the Danish nation average in antibiotic use. On top I have a lower feed cost, than before.” Thomas says.

Thomas Jessen is sure, that the effect is due to the complementary protein:” EP100i ensures that the piglets’ uptake is maximized due to a better developed gut. It also changes the bacteria composition in the gut for the better. The piglets are more vital and strong.”

Documented effect

The product has been tested several times and, latest in 2019 with Copenhagen University, where an extensive trial was carried out in Poland. The trial showed that piglets gained 1,6 kilos more than a diet that added 2.500 ppm zinc. The mortality was alike: 4,1 % for piglets fed with EP100i and 5,2 % for piglets fed with feed added 2.500 ppm zinc oxide. The basic diet without zinc or EP100i had a mortality rate of 12% and weighed 2,5 kilos less than EP100i at day 63.

Mette O. Nielsen, Professor in Sustainable Animal Nutrition at Copenhagen University, was surprised, that the EP100i fed piglets had a higher daily weight gain:” We expected a small loss in daily weight gain due to a higher content of fibre in the diet, but instead we had a greater weight gain. A few of the piglets had signs of diarrhea, but they were able to recover by themselves”.

Why do they grow better without zinc oxide?

Zinc changes the bacteria composition just as EP100i but harms gut development. During the trial, samples of tissue, blood and faeces were taken to measure the development of the immune system, inflammation and the piglets’ ability to take up the feed provided. The results showed that piglets from the zinc group suffered from moderate inflammation, measured on the presence of white blood cells and a weak gut barrier, that should protect the piglets from pathogenic bacteria entering the bloodstream. The immune system was also underdeveloped. The combined markers of an underdeveloped gut in the zinc oxide group are believed to be why piglets grew better with EP100i.

 Probiotics, prebiotics and metabolites – all in one

EP100i is a complementary functional feed produced from rapeseed meal fermented with lactic acid bacteria. EP100i contains fermentation metabolites including lactic acid and gut flora stabilizing lactic acid bacteria. The fermentation process enriches the feed with probiotics, prebiotics and anti-inflammatory and anti-microbial bacterial bioactive metabolites. In addition, the fermentation process ensures a high digestibility and low ANF´s (Anti-nutritional factors).

For more information about EP100i.

The complementary protein is produced by European Protein in Denmark, Ukraine and the USA.


European Protein is a Danish family-owned protein producer. We work to promote health and productivity for animals through functional and sustainable plant proteins. The company was founded in 2010 and has protein factories in Denmark, Ukraine and the US.

European Protein GMP+ certificate

European Protein is GMP+-certified


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+45 75 38 80 40, [email protected]


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+45 75 38 80 40, [email protected]

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+1 605-338-9775, [email protected]