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What are the prevention and control methods for chicken embryos dying before pipping?

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During incubation, it is very common for normally developed chicken embryos to be suffocated before pipping due to various factors such as an overly hard eggshell, limited space for the chick embryo's head to move, or its beak tip being too far from the eggshell. So, how can this phenomenon be prevented? 1. Turning the eggs. The first 10 days of incubation are the critical period for blastoderm positioning. To ensure the embryo's eye spot and head develop along the blunt-end shell edge of the hatching egg, so as to help the chick's beak tip pip the shell, the eggs should be turned frequently during this stage. During operation, the blunt end of the hatching egg should be kept facing up

During incubation, it is very common for normally developed chicken embryos to be suffocated before pipping due to various factors such as an overly hard eggshell, limited space for the chick embryo's head to move, or its beak tip being too far from the eggshell. So, how can this phenomenon be prevented?

1. Turning the eggs.

The first 10 days of incubation are the critical period for blastoderm positioning. To ensure the embryo's eye spot and head develop along the blunt-end shell edge of the hatching egg, so as to help the chick's beak tip pip the shell, the eggs should be turned frequently during this stage.

During operation, the blunt end of the hatching egg should be kept facing up, and the egg-turning angle should preferably be 45-55.

2. Candling after 10 days of incubation

If the eye spot and head of the embryo are not found, and only clear blood vessels are seen around the air cell, it indicates that when these embryos reach hatching time, their heads are generally located in the center of the air cell or bent toward the abdomen, and the rate of chicks hatching smoothly is extremely low.

These embryos should be marked on the eggshell so that timely rescue can be carried out when the chicks hatch.

3. Chicken embryos that develop normally and are relatively well positioned hatch in a concentrated manner, with an obvious hatching peak.

Generally, when hatching eggs are incubated to the 19th day, a few individuals pip the shell sporadically, and by the 14-18 hours of the 21st day, the hatching peak is reached.

The suitable time to assist chicks that have difficulty hatching smoothly is 1-2 hours before the hatching peak. Assisting too early will cause heavy bleeding, resulting in more dead embryos and weak chicks, or because the shell is broken too early, too much water evaporates and the chicks stick to the shell; assisting too late will cause a large number of chicken embryos with abnormal positions to be suffocated in the shell.

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