PURPOSE: A composition for feeding domestic animals is provided to reduce the cost of feed, and to improve the breeding environment by improving weight gain and feed efficiency and reducing ammonia generation rate. CONSTITUTION: A composition for feeding domestic animals contains polyamine extracted from a plant as an active ingredient. The domestic animals are hens. The plant is beans. The composition is fed to the domestic animals as drinking water by diluting in water to become 8-12ppm of the concentration.본 발명은 유효성분으로 식물에서 추출한 폴리아민(polyamines)을 함유하는 증체량 및 사료효율이 증진되고 암모니아 발생률을 감소시키는 가축 급여용 조성물 및 상기 조성물을 가축에게 급여하여 증체량 및 사료효율이 증진되고 암모니아 발생률을 감소시키는 방법에 관한 것이다.
