The eggs hatched by free-range and grain-fed free-range chickens are called grain eggs, which are very popular in the egg market in recent years. Because most of the eggs purchased at present are captive eggs, the collective chickens have little activity space and mainly use compound feed, and the hatched egg white is thin and the egg taste is poor. Because the eggs produced by ordinary rice, corn and wheat eaten by free-range chickens are not post-processed, it is more natural to eat this feed.
Grain and eggs are mostly produced in mountainous areas with few people. Because free-range chickens need a lot of activity space and a good living environment, the egg liquid produced is clear and gelatinous, and no industrial feed is added in the feeding process. Moreover, the number of grain eggs produced by free-range chickens fed with grain is relatively small, which leads to the higher price of grain eggs in the market, but it has always been welcomed by consumers because of its high nutritional value.