Feed supplement comprising oligosaccharides and medium chain fatty acids

1. A method for selectively eliminating, suppressing or regulating one or more enteropathogens in an animal, wherein the enteropathogen is a virus, comprising administering a feed supplement to the animal comprising:

a homotrimer, heterotrimer, homotetramer and/or heterotetramer of a carbohydrate component, or a derivative thereof or an extract thereof, or mixtures thereof, whereby said carbohydrate component is selected from the group consisting of a pentose saccharide, a hexose saccharide, glucuronic and galacturonic acid, and wherein the carbohydrate-components are connected by means of α and/or β bonds; and

a medium-chain fatty acid (MCFA) or a salt or a derivative and/or mixtures thereof, whereby said MCFA is selected from the group consisting of caproic acid (C6), caprylic acid (C8), capric acid (C10) and lauric acid (C12); and

measuring viral infection pressure or degree in the animal.

2. The method of claim 1 , wherein the viral pathogen is decreased by more than 25%.

3. The method according to claim 1 , wherein the pentose saccharides are selected from the group consisting of ribose, arabinose, xylose and lyxose.

4. The method according to claim 1 , wherein the hexose saccharides are selected from the group consisting of allose, altrose, gulose, idose, talose and mannose.

5. The method according to claim 1 , with the MCFA provided as a free MCFA, as a mono-, di- and/or tri-glyceride of the said MCFA and/or a NH 4 + —, Na + —, K + — and/or Ca 2+ — salt of said MCFA.

6. The method according to claim 1 , wherein the feed supplement further comprises raw materials and/or growth-promoting substances.

7. The method according to claim 6 , wherein the raw materials are selected from the group consisting of aromas and plant extracts, and wherein growth-promoting ingredients are selected from the group consisting of antibiotics, probiotics, prebiotics, essential oils, enzymes, fatty acids and organic acids.

8. The method according to claim 1 , wherein said homotrimer, heterotrimer, homotetramer and/or heterotetramer of the said carbohydrate components are present in liquid or solid phase, whereby said MCFA are present in liquid or solid phase, and wherein the feed supplement is present in liquid or solid phase.

9. The method according to claim 1 , wherein the homotrimer, heterotrimer, homotetramer and/or heterotetramer of the said carbohydrate component or the MCFA are present in the feed supplement in an amount of at least 1, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 99% by weight of the feed supplement.

10. The method according to claim 1 , wherein the homotrimer, heterotrimer, homotetramer and/or heterotetramer of the said carbohydrate component are administered at a dose of between 1 g/100 g feed supplement (1% by dry weight) and 50 g/100 g feed supplement (50% by dry weight), preferably 25 g/100 g feed supplement (25% by dry weight), and wherein

the MCFA are administered at a dose of between 1 g/100 g feed supplement (1% by dry weight) and 70 g/100 g feed supplement (70% by dry weight), preferably 35 g/100 g feed supplement (35% by dry weight).

11. The method of claim 1 , whereby viral enteropathogens in the gastrointestinal tract of the animal are specifically inhibited or agglutinated.

12. The method of claim 1 , wherein the viral enteropathogens comprise a rotavirus or norovirus.

13. The method according to claim 1 , wherein the animal is selected from the group consisting of fish, amphibians, reptiles, birds mammals, and preferably is selected from the group consisting of poultry, pigs, ruminants and humans.

14. The method of claim 1 , wherein the feed supplement is administered in animal feed.

15. The method of claim 1 , further comprising mixing the feed supplement with animal feed before administering to the animal.

16. The method according to claim 1 , wherein the feed supplement is not an emulsion.