The present invention relates to an egg containing ergothioneine, feed for chickens for egg taking which enables the chickens to produce the same, and a method for feeding and breeding chickens for egg taking. The edible egg with antioxidant properties, in which ergothioneine is sufficiently contained by using biological concentration, can be obtained by the following steps: preparing an extract containing ergothioneine from a waste culture medium used for producing edible mushrooms mixing the predetermined amount of the extract with generally used feed for chickens and feeding chickens for egg taking on the prepared feed for a predetermined period and obtaining the edible egg from the bred chickens. More specifically, the feed for chickens for egg taking is obtained by the following steps: applying water, hot water, or steam to a waste culture medium, heating the same until the temperature reaches 50-110°C, hot water extracting the resultant product for 30-90 minutes to obtain an extract, and separating residues by compressing the extract adding 10-40% of the extract with respect to the weight ratio of unpolished rice or unpolished rice in which ground shell is mixed in, heating the same, maintaining the temperature at 70-90°C, fermenting the resultant product for 44-52 hours, and removing moisture to be concentrated as 1/10 - 1/30.COPYRIGHT KIPO 2016본 발명은 에르고티오네인 함유 계란 및 해당 계란을 낳게 하는 채란용 닭의 사료 및 급이 사육 방법에 관한 것으로, 에르고티오네인의 계란의 생물농축을 이용하는 에르고티오네인이 충분이 함유한 항산화력을 가지는 식용 계란은 식용 버섯의 생산에 쓰인 폐배지에서 에르고티오네인 함유추출액을 제조하고 해당 추출액을 일반적으로 사용되는 닭용 사료에 지정량을 혼합하고, 채란용 닭의 사료를 지정기간 채란용 닭에게 급이하고 사육한 닭에서 얻을 수 있다.
