PREPARATION FOR THE SUSTAINED RELEASE OF ACTIVE SUBSTANCES¹WHICH ARE SUITABLE AS A THERAPEUTIC SYSTEM OR FOR IMPROVING¹GROWTH AND FEED UTILIZATION IN RUMINANTS

摘要

The invention relates to a composition which contains at least one active substance, a wax, a weighting agent and optionally a sugar, sugar alcohol, cellulose ether or a polyethylene glycol, an active substance release system built up from this composition, a process for its preparation and its use in veterinary medicine and animal nutrition.