The invention relates to a self-emulsifiable liquid composition intended to be diluted in an aqueous intermediate solution and then incorporated into the drinking water of livestock animals, and also to the use of such a composition. The invention is characterized in that the composition comprises at least&mdash；between 1% and 12% by weight of the florfenicol active ingredient, relative to the total volume of the composition； &mdash；at least 50% by weight, relative to the total volume of the composition (p/v), of a mixture of C8-C10 saturated polyglycosylated glycerides having an HLB (hydrophilic-lipophilic balance) of less than 16； and&mdash；at least 5% by weight, relative to the total volume of the composition (p/v), of a surfactant.
