Introduction: People usually think that native chickens grow in the natural environment and eat natural foods. The quality of the produced eggs will naturally be better. In general, chicken eggs produced by chicken farms are often referred to as "yangyang eggs." Due to the adoption of specialized egg-laying chicken species and artificial feed, the nutritional value may not be as good as that of soil eggs. therefore
It is generally believed that native chickens grow in the natural environment and eat natural foods, and the quality of the produced eggs will naturally be better. In general, chicken eggs produced by chicken farms are often referred to as "yangyang eggs." Because of the adoption of specialized egg-laying chicken species and artificial feed, their nutritional value may not be as good as that of soil eggs. Therefore, even if the price is much higher, many people are willing to buy eggs from the soil, especially for the elderly, pregnant women and children. So, what is the difference between indigenous eggs and “foreign eggs†and which nutritional value is higher?
Native chicken eats natural food
Xu Guiyun, deputy director of the Ministry of Agriculture's Poultry Quality Supervision, Inspection and Test Center, said that in the real sense, the chickens should be completely free-range. Every day, they should eat food in the forest and only eat natural foods such as insects and weeds. This kind of chicken has unbalanced nutrition and the size of the eggs is relatively small. However, because the chickens eat more green leafy vegetables, the content of carotenoids and vitamin B2 in the egg yolk is high, so the egg yolks are larger and darker. However, deputy director Xu said that in fact, in addition to the eggs laid by the chickens in their own homes, most of the commonly-produced soil eggs in the market today are mostly produced under the “raising of foreign chickensâ€. Some chicken farms will raise laying hens, let them run freely in the woods and cotton fields, eat some natural foods like chickens, and feed a certain amount of feeds to ensure that the hens have a balanced diet. There is not much difference between this type of egg and earth eggs, but the price is cheaper than pure soil eggs, and much more expensive than "foreign eggs." What we call “foreign eggs†is the eggs laid under cages and they only eat feed. This scientifically formulated feed can also include a variety of foods and nutrients, so the egg's nutrition is not worse than the two, the price is the cheapest.
As far as the nutrition of soil eggs and "yangyang eggs" is better, Associate Professor Fan Zhihong of the College of Food Science and Technology at China Agricultural University believes that the nutritional value of "Yangyang Egg" is still higher.
Fan Zhihong said that chickens in chicken farms are all scientifically proportioned and the nutrient content is fully balanced. Therefore, the content of minerals such as iron, calcium, magnesium, etc. is higher in eggs produced than in soil eggs. Second, a certain amount of dietary fiber is added to the feed that is eaten by the chicken, making the cholesterol and fat content of the egg yolk much lower than that of the soil egg, and is more suitable for the elderly. At present, the United States has begun to sell special eggs with low fat and low cholesterol. This type of egg contains 25% lower saturated fat, 15% lower cholesterol, several times higher levels of vitamin E and omega-3 fatty acids, and is rich in iodine and vitamin B2, which can prevent cardiovascular diseases. , cancer and eye diseases.
Native chickens produce very few eggs and have a long period of nutrient accumulation. Therefore, the lower eggs have higher fat content and are not suitable for long-term consumption by the elderly. However, indigenous eggs also have advantages. They contain more Omega-3 unsaturated fatty acids and phospholipids. These two substances can promote the metabolism of cholesterol and are very beneficial to the protection of cardiovascular disease.
Soil eggs taste better
Since indigenous eggs are not better nutritionally than foreign eggs, why do so many people love to eat it? Experts say that the main reason is that the taste of eggs is better. Because the fat content of eggs in soil is higher, so the egg yolk is larger and it is very suitable for boiled and fried eggs. A simple cooking method can fully exert its excellent taste. The egg whites of common eggs are more suitable for steamed or beaten eggs.
So, isn't it a small, pinkish, yolk and orange-colored egg that is bound to be dirt? Xu Guiyun, deputy director, told reporters that many traders claim that powdered eggs are real soil eggs. of. In general, white shell chicken and brown shell chicken cross hybrids, the eggs that come out are shells, which can be achieved in both free-range and cage. There are also some non-standard breeders, in order to make powdered eggs, add pigment in the chicken's feed. Therefore, the color of the shell eggs is too bright, we better not to buy. The real soil eggs, in addition to a certain appearance characteristics, the egg thicker, only to open the point of view to determine.
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