Actually, that's not the case. Some scientists compared the amino acids in natural eggs with those in ordinary eggs. In fact, there is not much difference in nutrition between the two, so it is said that soil eggs are better than raising eggs. So why are soil eggs produced in rural areas more nutritious than those raised in cities? First, the yolk of soil eggs is better than that of chickens. Friends who have eaten earth eggs will find that the yolk of earth eggs is better than that of chickens. In fact, it is impossible to tell which egg is more valuable from its yolk.
The reason why the yolk of earth eggs is yellow is that the color of the yolk will be slightly darker because the earth chicken mainly eats green feed and corn, while the chicken mainly eats feed, so the color of the yolk will be slightly lighter. Secondly, because native chickens live on pure green and pollution-free food, in order to make them lay more eggs, they will be fed a lot of feed to promote egg laying, so people think that native eggs are more nutritious. Compared with raising eggs, I personally think that native eggs are slightly smaller and the yolk is slightly yellow.
Egg white and yolk are thicker than raised eggs, and the taste of eggs will be very strong. This is mainly related to the different feeding methods of soil eggs, but it has nothing to do with the nutrition of eggs. Don't be blinded by the propaganda of merchants. From a nutritional point of view, again, talk more about nutrition. Generally speaking, the yolk of soil eggs is relatively large, or it is called free-range, so we think it must be nutritious.
The main factors that determine the nutritional composition are the breed and feeding time of chickens, but the natural difference of eggs is not big. Native chickens, that is, free-range chickens, are usually more delicious than chickens in chicken farms, so people naturally think of the high nutritional content of eggs, and then think of their great nutritional value. This is a misunderstanding, and it is totally hype.