Feed supplement comprising oligosaccharides and medium chain fatty acids

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 a and 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.