A new concept animal feed additive for reducing methane gas in accordance with the present invention means a new technology conducting functions for promoting digestion of livestock and reducing generation of methane gas from the livestock by adding a newly produced feed additive to the conventional animal feed. The present invention is mainly aimed at allowing various supplements to conduct functions for promoting digestion of livestock and reducing generation of methane gas from the livestock at the same time when the feed is digested by adding the supplements to an animal feed so as to enable the supplements to be stably mixed with the animal feed. The new concept animal feed additive for reducing methane gas&prime in accordance with the present invention, which is developed to conduct various functions by being added to the animal feed, comprises oak charcoal nanopowder, pyroligneous liquor of retinispora, calcium water, and hydrogen water and can markedly reduce generation of methane gas when livestock and animals are fed with a feed additive manufactured by using the ingredients. Effects of the new concept animal feed additive for reducing methane gas in accordance with the present invention are as follows. Methane contained in belching and gas released from cattle and sheep is reduced. A smell of excrement is reduced. Absorption in animal intestines is enhanced so the feed consumption can be reduced. The number of parasites in the intestines of the livestock is reduced. Good quality of milk is produced from cows, and milk production can be increased. Meat quality of beef cattle is enhanced, and a growth rate is increased. Animal stress is reduced, and immunity against diseases can be enhanced.COPYRIGHT KIPO 2016본 발명에 따른 신개념 메탄가스 감소용 동물용 사료첨가제란 기존의 동물용 사료에 새롭게 제조된 사료첨가제를 첨가함으로써 가축의 소화흡수를 돕고 메탄가스발생을 줄이는 기능을 수행하는 신기술을 의미한다.본 발명은 각종 보조물질을 동물용 사료에 투입함으로써 보조물질이 사료와 안정적으로 혼합될 수 있도록 함으로써 사료가 소화될 때, 각종 보조물질이 소화를 돕고 동시에 메탄가스 발생을 줄일 수 있도록 돕는 기능을 수행하도록 하는 데 그 주된 목적을 지니고
