What's wrong with eggs without yolks?

Common sense tells us that an egg is made up of egg white and egg yolk. As the saying goes, different people have different tastes. Some people prefer egg whites, while others prefer egg yolks. This way different family members can take turns eating. In fact, not all eggs have yolks. For example, some eggs with small yolks or no yolks have no yolks. Don’t be alarmed if you see eggs without yolks. As long as there are no obvious signs of deterioration, you can eat them safely.

Yolkless eggs: Usually smaller, about 1/10 the size of a normal egg, and some may be too long or too round at the beginning. There are also normal ones, which usually lack the yolk. Hens lay this kind of eggs because foreign objects such as shed mucosal tissue, small blood clots (caused by bleeding of follicles during ovulation), worms in the intestines (which sometimes accidentally migrate upward and reach the fallopian tube), etc. fall into the fallopian tube, stimulating the protein-secreting part of the fallopian tube and the uterus to secrete protein and eggshell, which wrap around the foreign object, thus forming a yolkless egg. This is not a disease but just a coincidence.

Yolkless eggs are usually small eggs, but small eggs are not necessarily yolkless. Sometimes it is found that the egg white inside a small egg is wrapped with a part of the yolk. These small eggs with yolk are because when the yolk matures and falls off, the hen is frightened and flies around, so that part of the mature yolk falls into the abdominal cavity and the other part falls into the oviduct. In this way, a small amount of egg fragments also mix with normal eggs, which can stimulate the oviduct to secrete egg white, thus forming small eggs with a small amount of yolk. If these few abnormal eggs are produced frequently, it may be due to narrowing or blockage of the fallopian tube.

The lack of yolk in eggs is caused by abnormal division during the meiosis of oogonia to form oocytes when the chicken lays eggs. This is not a disease but just a coincidence.

If a hen often lays eggs without yolks, it may be because the hen's fallopian tubes are narrow or blocked, resulting in deformed eggs.

Another possible cause of eggs without yolk is that the egg-laying hen is not fully developed, resulting in incomplete egg development and therefore no yolk.