1, laying double yellow eggs is a physiological abnormality of hens. Double yellow eggs don't hatch chickens. Sometimes, when protein secreted by fallopian tubes meets parasites or blood clots that fall into fallopian tubes, they will treat these things as egg yolks and wrap them into an egg layer by layer, resulting in a yellow-free egg.

2, kill the hen, open its abdominal cavity, you can see that the yolk is like a bunch of grape balls, round and rolling, big and small, this is the chicken's egg. The main component of eggshell is calcium carbonate.

3. Therefore, in the hen's food, if calcium is lacking, the eggshell will be short of raw materials, so we should make the eggshell thin, or even only account for about 10% of the egg. One or two eggs weigh one dollar, which means that hens need a lot of calcium during laying eggs. When raising chickens, in addition to preparing enough feed for hens, it is also necessary to supplement minerals, such as limestone with more calcium.