The present invention relates generally to an immunogenic LHRH composition andmore particularly to an immunogenic LHRH composition comprising an LHRH C-terminal fragment of at least five amino acids. The present invention isuseful, inter alia, as a prophylactic and/or therapeutic agent for themodification of fertility and behaviour patterns of animals, the achievementof livestock production gains such as increasing growth, decreasing feedconversion ratios or the control of unwanted organoleptic characteristics orthe treatment of disorders of the reproductive organs.
