Is there a difference in nutrition between feed eggs and grain eggs?

There was no significant difference in the nutrition of feed eggs and native eggs, and there was no significant difference in amino acid content between the two. The nutritional value of native eggs is not only not higher than that of feed eggs, but also because of the free-range environment of native eggs, they are more likely to be exposed to pesticides, fertilizers and other chemicals, and the possibility of being polluted by agrochemicals is higher than that of eggs produced in chicken farms.

The chickens in the chicken farm are fed intensively, and even though there will be many problems with the feed, these problems can be found and can be found out. As for the native eggs, it is difficult to know where this came from, and I don't know the ins and outs. Therefore, from the perspective of food safety, the risk of native eggs is higher.

1. Nutrients.

First of all, let's make it clear: there are no two identical leaves in the world, so even if they are all native eggs laid by the same chicken, there are differences in nutrient content between different eggs, so the nutrient content of native eggs and foreign eggs cannot be the same.

Studies have shown that there is no significant difference in protein, carbohydrate, calcium, iron and other components between native eggs and foreign eggs, and the content of B vitamins and vitamin A in foreign eggs is higher than that of native eggs, while native eggs are higher in fat and vitamin E than foreign eggs. Even if there are these differences, at the dose we eat 1-2 eggs per day, such a difference is not enough to have a significant difference in our health effects, because our daily nutrition** is not only eggs, but also many other foods, and the difference in the content of these few milligrams of nutrients really does not say who is better.

Second, the color of the egg yolk.

Many people are keen to talk about the color of the egg yolk, saying that the color of the yolk of the native egg is darker than that of the foreign egg, so it is more nutritious. The main influencing factors of the color of the egg yolk are the age and physiological state of the laying hens, the breed, the light environment and the feed composition.

The yolk of the hen is darker in the early stage of egg laying, and the yolk gradually becomes lighter in the later stage.

Different breeds of chickens, even when fed the same feed for the same period of time, have different yolk colors. Free-range chickens are able to eat carotene-rich green feed, and the egg yolk is darker. Eggs fed to corn have a darker yolk than those fed to wheat because corn contains lutein, which is almost absent from wheat.

Therefore, the color of the egg yolk can actually be artificially controlled, by adding lutein and other substances to the feed can be "faked" to create the dark egg yolk of the so-called native egg, if you are buying an egg in the market, you can't judge whether it is a real native egg according to the color of the yolk.

3. Egg flavor.

The flavor of eggs is mainly ** in the egg yolk of aliphatic hydrocarbons, aromatic hydrocarbons, alcohols, aldehydes, ketone ethers, amines and other substances, and the cooked egg yolk has more kinds of flavor substances than the raw egg yolk, eggs in the heating process, the protein, free amino acids, fatty acid substances in the chemical reaction, produce a pleasant egg flavor, which is why we eat eggs will feel the egg fragrance.

Egg flavor is related to feeding age and feed composition, and some studies have shown that the types and contents of flavor substances in eggs laid by hens at different weeks of age are very different; Adding soy phospholipids or soy flavonoids to the feed can enhance the flavor of the egg yolk.

Of course, it is different, the nutritional value of native eggs is higher, because local chickens generally do not feed chicken feed, they are fed with bud rice, and feed chickens are fed feed, and some additives are added to these feeds, these additives can promote chickens to lay more eggs, but it is not good for human health.

The nutritional value of native eggs and feed eggs is the same, but some merchants expand their publicity in order to buy a good price. It's not that the more expensive things you have, you have to keep your eyes open when you buy things yourself.

1. Elemental minerals are different.

The content of carotenoids and vitamin B2 in the yolk of native eggs is high, and the content of mineral elements such as iron, calcium, and magnesium in ordinary eggs is higher than that of native eggs.

2. The cholesterol content is different.

The cholesterol and fat content in the yolk of ordinary eggs is much lower than that of native eggs.

3. The taste is different.

The taste of native eggs is relatively fragrant and tender, and there is no eggy smell; Ordinary eggs have a rougher taste and a more fishy smell.

In terms of nutritional value, there is little difference between native eggs and eggs raised on ordinary feed, and the main components are protein, soft phospholipids and vitamins. Eggs are mainly composed of egg white and egg yolk, and the main components of egg white are 90% water and 10% protein and other substances. The main components of egg yolk are fatty acids, vitamins A, D, E, K, phosphorus, iron and other minerals, as well as soft phospholipids, riboflavin, lutein and zeaxanthin, etc.

There is very little difference in the nutritional value of native eggs and eggs, mainly because of the different groups of people.

Native eggs [suitable for people] Children.

Nutritional value] 1. Native eggs are eggs laid by free-range chickens in a pure natural environment, and the nutrients consumed by such chickens are not balanced. Eggs are smaller, but the yolk is high in carotenoids and vitamin B2, so the yolk is larger and darker.

2. The main difference in nutritional composition between native eggs and foreign eggs is cholesterol content, the cholesterol content of native eggs is significantly higher than that of foreign eggs, which is more suitable for children.

Eggs [suitable for people] middle-aged and elderly people.

Nutritional value] 1. Ordinary eggs are mostly produced by hens fed by large chicken farms through centralized management and centralized ingredients, and the output is relatively large, and the size of the eggs is relatively large.

2. The feed eaten by the chickens in the chicken farm has been scientifically proportioned, and the nutrient content is fully balanced, so the content of iron, calcium, magnesium and other mineral elements in the eggs produced is higher than that of native eggs.

3. A certain amount of dietary fiber is added to the feed eaten by ordinary chickens, and the cholesterol and fat content in the egg yolk is much lower than that of native eggs, which is more suitable for middle-aged and elderly people.

The nutritional value of grass eggs is different, and the taste is not the same.

The nutritional value of native eggs and feed eggs is the same.

The main difference between native eggs and feed eggs is the taste, because the native chicken eats some insects in the process of eating, the fatty acid concentration of native eggs will be higher than that of feed eggs, and the fragrance is stronger.

The chickens in the chicken farm mainly eat formula feed, and the nutrition is more comprehensive than that of the local chickens that pick up grass, grass, insects and insects everywhere, although cholesterol.

It is not as high as native eggs in terms of fat content, but it has more minerals such as iron, calcium, and magnesium than native eggs.

Eggs have high nutritional value, are good for high-quality protein, B vitamins, and are also rich in iron, calcium, phosphorus, zinc, selenium and other minerals needed by the human body. At the same time, the amino acids of egg protein.

The ratio is very similar to that of the human body, so the absorption and utilization rate are very high.

Although the fat content in egg yolk is slightly higher, most of them are fatty acids that are beneficial to the human body, and they will not gain weight if they are eaten, and regular consumption is good for preventing cardiovascular diseases.

There are also benefits. Therefore, eating 1 whole egg a day can not only replenish the nutrients needed by the body.

It can also effectively help the human body enhance physical fitness and immunity.

Do feed eggs have hormones

Yes. In fact, eggs themselves contain some hormones, such as progesterone.

A natural progesterone secreted by the corpus luteum of the ovary, but the "endogenous hormone" in the egg will not pose a health threat to the body, and the endogenous hormone is the opposite of the "exogenous hormone", in real life there are indeed some illegal businesses in the feed to illegally add various hormone drugs, which can increase the output of eggs by 5-8 times, but also make the chicken not sick, reduce the risk of farmers, in order to harvest higher economic benefits, this is illegal, there are safety risks.

If you want to avoid buying "hormone eggs", try to choose a large supermarket to buy, the eggs sold in such places are eggs produced by regular chicken factories that meet national standards, and the safety factor is high.

High, if it is too cheap, it is not recommended to buy eggs.

Are feed eggs harmful to humans

There is no harm in eating it in moderation.

Formal breeding to obtain feed eggs do not contain harmful ingredients to the human body, can be eaten with confidence, but it should be noted that for some surface moldy, cracked, yellow, sticky shell, black, foul smell and other spoiled eggs can not be eaten, which may have bacteria, mold and other toxins, accidental consumption will cause harm to the body.

What happens if you eat too many eggs

Eating too many feed eggs will mainly cause the following harms:

1. Eggs are rich in nutrients, including protein and lecithin.

Cholesterol, minerals, vitamins, etc., eating too many eggs will cause overnutrition, resulting in the conversion of nutrients into fat and accumulation in the body, causing obesity.

2. Egg yolk is rich in cholesterol, and eating too much will cause excessive cholesterol intake, which will affect the health of blood vessels and lead to cardiovascular and cerebrovascular diseases.

3. The protein content in eggs is also rich, and excessive protein intake will cause waste of protein, produce waste and waste gas in the intestines, and affect the digestive system. Healthy.

The size of the <> is different: the feed eggs are larger and have a shiny shell, and the grain eggs are smaller and have a coarser shell.

The color is different: the shell of the feed egg is milky yellow-white, the yolk is yellowish-white, the shell of the grain egg is light yellow-brown, and the yolk is dark yellow.

The taste is different: the feed eggs are powderier and harder, and the grain eggs are softer and glutinous.

Egg whites are different: the egg whites of feed eggs are like boiled water, and the egg whites of grain eggs are more viscous.

1. Different sizes1. Feed eggs: relatively large, shiny and smooth shell.

2. Grain eggs: relatively small, rough shell, dull luster.

Second, the color is different1. Feed eggs: the eggshell is generally milky white, and the yolk is generally yellowish-white.

2. Grain eggs: the eggshell is generally light yellow-brown, and the yolk is generally dark yellow.

Third, the taste is different1. Feed eggs: the taste is powderier and harder.

2. Grain eggs: the taste is relatively soft and glutinous.

Fourth, egg whites are different1. Feed eggs: egg whites are like boiled water, and they flow relatively clean after breaking the eggshell.

2. Grain eggs: Egg whites are relatively viscous, and it is difficult to penetrate when irradiating eggs with a strong flashlight.

The nutritional value is the same.

Ning Zhonghua, a professor at the College of Animal Science and Technology of China Agricultural University and deputy director of the National Poultry Measurement Center, said that the difference between native eggs and ordinary eggs is mainly in the taste.

However, its basic nutrients are protein, fat, vitamins and minerals, which are not fundamentally different from the "foreign eggs" produced by farms.

Ning Zhonghua said that consumers generally have a consumer misunderstanding when buying native eggs, that is, they think that native eggs are larger than ordinary eggs with larger yolks and darker colors, which is not comprehensive.

The color of the egg yolk is related to the food ingested. He said that if there are ingredients with high pigment content in the chicken feed, such as red pepper and purple cabbage, the egg yolk will be reddish; If it contains green plants with high lutein content such as alfalfa powder and pine needle powder, or yellow corn, the egg yolk will be yellow;

If white corn, wheat or rice are the main ingredients, the yolk will be whitish. "It has nothing to do with the breed of chicken, the key is that there is a difference in the food fed to the chickens. ”

The nutritional value is the same.

Ning Zhonghua, professor, College of Animal Science and Technology, China Agricultural University, deputy director of the National Poultry Determination Center, introduced that the difference between local eggs and ordinary eggs is mainly in taste, because the local chicken food is some insects, and the concentration of fatty acids in local eggs will be higher and the fragrance is strong;

But its basic nutrients are protein, fat, vitamins and minerals, which are not fundamentally different from the "foreign eggs" produced on the farm.

Ning Zhonghua said that consumers generally have a misconception when buying local eggs, that is, the yolk is larger than ordinary eggs and the color is darker, which is incomplete.

The color of the egg yolk is related to the food you eat. "If the chicken feed contains ingredients with a high pigment content, such as red pepper or red cabbage, the yolk will be red," he says.

If it contains green plants with high lutein content such as alfalfa powder, pine needle powder, or yellow corn, the egg yolk will be yellow.

If the main ingredient is white corn, wheat, or rice, the yolk will be very light. "It's not about the breed, it's just feeding the chickens in a different way. ”

The feed eaten by chickens in different chicken farms is scientifically proportioned, and the nutrient content is comprehensive and balanced, so the content of iron, calcium, magnesium and other mineral elements in the eggs produced is higher than that of native eggs. Secondly, a certain amount of dietary fiber is added to the feed eaten by foreign chickens, which makes the cholesterol and fat content in the egg yolk much lower than that of native eggs, which is more suitable for the elderly. At present, the United States has started to ** low-fat and low-cholesterol special eggs.

This egg has 25 times less saturated fat, 15 lower cholesterol than regular eggs, several times more vitamin E and omega-3 unsaturated fatty acids, and is also rich in iodine and vitamin B2 and can protect against cardiovascular diseases, cancer and eye diseases.

However, the eggs produced by local chickens are very small, and the nutrient accumulation cycle is long, so the egg fat content is high, which is not suitable for the elderly to eat for a long time. But eggs also have the advantage of being higher in omega-3 fatty acids and phospholipids, both of which can promote cholesterol metabolism and are very good for cardiovascular protection.