Patent ID: 9198857
Filing Date: 2015-12-01
Classification: A61K,A61P

Abstract:
1. A method of improving the growth and weight gain in livestock animals by administering to an animal, a zoo-technical drug delivery system in the form of a subcutaneous implant which comprises (i) a medicated thermoplastic polymer core layer, (ii) a medicated thermoplastic polymer intermediate layer; and (iii) a non-medicated thermoplastic polymer skin covering the intermediate layer, wherein said core layer is loaded with crystals of a first zoo-technical active compound, wherein said intermediate layer is loaded with crystals of a second active compound, wherein the first zoo-technical active compound is trenbolone acetate and the second zoo-technical active compound is altrenogest, wherein the medicated thermoplastic polymer core layer and intermediate layer each comprise ethylene-vinyl acetate copolymer; and wherein the implant is administered subcutaneously to the animal.