Mature eggs produced by degenerated ovary on one side of hen enter the fallopian tube through the angle at the front end of fallopian tube. Fertilization takes place at the upper end of the fallopian tube (the eggs we eat are not fertilized). When the fallopian tube descends, the fertilized egg is wrapped by protein secreted by fallopian tube wall, shell membrane and eggshell in turn. When the egg moves in the fallopian tube, it rotates due to the muscle movement of the tube wall and is wrapped in a layer of protein. The protein at both ends forms a twisted band, which is the white band at both ends of the yolk when we open the raw egg.

Eggshell is 89%~97% calcium carbonate, with a small amount of salt and organic matter. Some birds' eggs have colors and patterns, which are produced by pigment cells in the tube wall under the fallopian tube.

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Matters needing attention

1, poor cold resistance. The temperature of newly hatched chicks is 3℃ lower than that of adult chickens, and it takes 10 days to reach the normal temperature. In addition, the chicken's fluff is short and thin, so it can't keep out the cold, so its adaptability to the environment is not strong. They must rely on artificial heat preservation to grow and develop normally. 1-30-day-old chickens should be kept warm and placed in a clean and hygienic environment. Chickens over 30 days old are basically full of feathers and can keep warm.

2, high body temperature, rapid development, the average chicken's body temperature is between 40.8-465438 0.5℃, so it must be raised in an environment with good ventilation, warm in winter and cool in summer. In addition, chicken's digestive tract is short, its metabolism is vigorous, and its growth and development are rapid, so it needs to be fed with nutritious and digestible feed to meet its needs.

3, weak resistance, especially chicks, vulnerable to harmful microorganisms. Therefore, in addition to cleaning the environment, we must also take precautions. For example, outsiders are strictly prohibited from entering and leaving the henhouse, the environment and cages should be disinfected, and all kinds of chickens should be injected with various vaccines regularly.

Chickens are timid, especially chicks are easily frightened. Light people are crowded and their growth and development are blocked, while heavy people trample on each other, resulting in disability and death. So chickens should be kept in quiet places. Rough management, sudden noise, the intrusion and capture of cats and dogs will all lead to riots and affect the growth of chickens.

5, afraid of humidity, chickens should grow in a dry and ventilated environment. If the environment is humid, some pathogens and molds can easily grow and reproduce. If the henhouse is wet, the chicken manure will ferment to produce toxic gas, which makes the chicken easy to get sick.

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