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Eggs cannot be considered "vegetarian"

Vegetarian concept 2014-04-06

When people hear that the other party is vegetarian, they usually can’t help asking: “Is eggs considered vegetarian?"Now many vegetarians who eat delicious food will think that the eggs produced by laying hens cannot hatch chicks because they are not fertilized, so they are also considered "vegetarian".In fact, the formation of eggs has nothing to do with fertilization. It is an animal food because it does contain germ cells excreted by hens.

In rare cases, an unfertilized egg can even develop into a rooster, as long as the only sex chromosome remains inside it. Z Replicates into complete male chromosomes ZZ。 Of course, this is an extremely special reproductive phenomenon of lonely males.But this possibility at least proves that eggs are definitely "meaty".

Egg formation: It’s the same if it is not fertilized

Like humans, hens have two ovaries, but the one on the right side will gradually degenerate during growth, and the reason is usually considered to be convenient for laying larger hard-shelled eggs.The process of hen brewing an egg is like human ovulation.In the ovaries covered with large and large follicles, yolk matter slowly deposits around the oocytes, wrapping the oocytes layer by layer to form a primary oocyte, which will divide at one time, producing a polar body and a secondary oocyte.(When primary oocytes divide, they divide unevenly. The larger ones are called secondary oocytes, and the smaller ones are called first polar bodies.) Then, under the action of hormones and nerve signals, the follicle smooth muscle contracts and ruptures, and this yolk-filled secondary oocyte is discharged to enter the fallopian tube.

At this time, if a rooster mates with the hen in advance, the yolk will descend to the funnel of the fallopian tube and combine with the upward rooster sperm to complete the second mature division, forming the fertilized egg and the second polar body.The fertilized egg continues to descend, and is wrapped in concentrated and dilute proteins in the swelling part of the fallopian tube, forming what we call egg whites.Then it leaves the enlarged part and enters the isthmus to form an inner and outer eggshell membrane.The next destination is the uterus.The infiltration of uterine fluid increases the weight of the egg and becomes rounded.Then, calcium is deposited on the eggshell membrane to form an eggshell, and a thin cuticle protective film is applied to the outside of the eggshell.At this point, a complete egg was finally announced to be completed.

Oocytes that have not been fertilized will not be destroyed in the fallopian tube.For the downstream "production line", it is an indiscriminate stimulant from the fertilized egg, and it must also be packaged into a complete egg, which is similar to the so-called "cmm disease beads".

Unfertilized egg laying is a "biological habit"

In nature, it is rare for avians to produce unfertilized eggs, because they will find males to mate in time, fertilize egg cells and ensure the reproduction of the race.

Most of the eggs we usually buy in the market are unfertilized.That's because they mostly come from modern laying hen farms raised in roosters and hens.

Why do hens know that they cannot be fertilized, and they still waste nutrients and calcium, and persist in converting egg cells into eggs?It cannot be decided by this matter.Poultry of the order of the order of chicken (such as chickens, quails), goose (such as ducks, geese), etc. cannot be sure whether the eggs they lay are fertilized, but they have a biological habit called "undeterminal laying eggs".Poultry such as turtledoves, pigeons, domestic birds, etc. can produce a fixed number of eggs in each nest and then start hatching.When part of the eggs in the nest are removed, they will replenish some into the nest before hatching to achieve a normal number.Therefore, their ovulation activity will be in an excited state for a long time.Egg chickens and ducks are cultivated using this habit.

In other words, if you can raise a wild bird that lays eggs indefinitely, such as a woodpecker, when it is spawning, you take one egg every day, and it will continue to lay eggs one by one like a domestic chicken!

In modern laying hen breeding, people will use breeding technology, feeding management and other means to improve the hen's egg laying ability and egg quality.Only "excellent" laying hens can enjoy natural mating.This "excellent" is manifested in the hen reaching 25 weeks of age or its egg weight reaches 50 grams.

No difference in nutrition of unfertilized eggs

Before hatching, there is no difference between the nutrient content of fertilized eggs and non-fertilized eggs.It just adds one sperm and performs more cell division.It may cause a little difference in hormone levels, but it is not as large as the normal nutritional difference between each egg, and it can be completely negligible.

However, the shelf life of fertilized eggs is generally shorter than that of non-fertilized eggs.Because once the necessary hatching conditions are not met, embryonic development will be hindered and necrosis will occur.

Of course, there is another important difference between fertilized eggs and non-fertilized eggs, that is, fertilized eggs will gradually develop and become embryonic eggs.

In the "Miscellaneous Poems of Food and Taste" by Xie Jinpu of the Qing Dynasty, he said: "The duck eggs died before they hatched, and there were already ducklings in it... They were called Xi'an."This kind of "happy egg", also known as "feather egg" and "wish egg", is popular among some parts of our country.

There are mixed reviews about the nutritional value of feather eggs.Since yolk and protein are assimilated into chicken embryos, the total amount of organic matter in the egg will decrease and the weight percentage of its nutrients will decrease.However, some people also pointed out that the amino acid balance and the specific gravity of unsaturated fatty acids in chicken embryos will gradually increase, such as calcium, phosphorus, iron, and vitamins. A、E The content of micronutrients will also increase, and the content of cholesterol will decrease. In short, substances that are beneficial to the human body are increasing.

In short, when eating this "feather egg", you must pay attention to its source.If you eat not live embryo eggs, but necrotic and infected embryo eggs eliminated from the breeding eggs, it will of course cause harm to your health after eating them.

2024-02-05 18:10
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