How to distinguish between infertile eggs, dead eggs and live eggs

The identification of infertile eggs, dead eggs and live embryonic eggs is mainly carried out by taking the eggs. During the incubation period of the eggs, the first light (6 7 days), the second light (13 to 14 days), and the third light (24 to 25 days) can be carried out three times. In the headshot, it is possible to distinguish between fertilized eggs and infertile eggs, dead embryonic eggs from live embryonic eggs, weak embryonic eggs and normally developing embryonic eggs.

In the actual incubation process, the number of eggs depends on the specific situation, usually in the headshot, if the fertilization rate of the eggs reaches more than 90% and the development is normal, the second and third photos can no longer be carried out. The distinction between infertile eggs, dead eggs and live eggs and the strength of embryonic development can be referred to Table 4-4.

Table 4-4 List of embryo and egg examinations.

Table 4-4 List of embryonic egg examinations (continued)-1

1, with strong light irradiation The one that sees the black spot is the one with 2, put it in the nest for a few days, and the one that breaks the shell is the sperm egg, and the one who does not have the sperm egg.

The "plant hematopoiesis" with a comprehensive function of sperm and eggs

Quickly promote the growth of roots and root hairs of plants and the development of root system, improve the utilization function of plants for water and fertilizer, make old, weak and diseased plants become stronger rapidly, induce plant flowering and pollination, flower and fruit preservation, and the effect is particularly significant; It can effectively mobilize the transport and accumulation of nutrients, and promote the rapid expansion of fruits, early ripening and beautiful color.

After a period of incubation, the eggs will hatch into chicks. Prior to incubation, we distinguish between inert, dead and live eggs by:

1.Check the eggshell dissipation: the eggshell of an infertile egg has a smooth surface, no spots and cracks, it feels relatively light, and there is no yolk and egg white inside; There will be irregular black spots on the eggshell of the dead embryo egg, and the eggshell feels heavier, but there is no yolk and egg white inside; The eggshell of a live embryo egg is smoother, free of spots and cracks, and the eggshell is shiny.

2.Shake the egg: shake the egg, if there is no sound, it is a dead egg or a dead embryo egg; If you can hear a crisp sound, it is a live egg, that is, there are chicks growing inside.

3.Crack the shell: Gently break the egg, if the yolk and egg whites are thick, the color is uniform and smooth, and there is no odor, it is a good egg, otherwise it may be a seedless egg or a dead embryo egg.

It should be noted that the identification of live eggs requires caution, as it disrupts the process of hatching finches and is inhumane. Therefore, under normal circumstances, we only need to pay attention to the first two methods.

An infertile egg is an unfertilized egg that is identical in appearance to a normal egg and has no embryonic development inside. Dead embryonic eggs are eggs that die during development during fertilization, and are also the same in appearance as normal eggs, but there will be some embryonic tissue inside. A live embryo egg is an egg that has been fertilized and developed, but has not hatched, which is the same as a normal egg in appearance, but the internal embryo has developed to a certain extent, and even has bones, blood vessels and other tissues.

Generally speaking, infertile eggs have the same appearance as normal eggs, and need to be identified by methods such as light transmission and shaking, while dead eggs and live eggs need to be dissected to observe the internal tissue.

The difference between infertile eggs and infertile eggs is that the shell color is different, the yolk is the same, and the incubation requirements are different, gently open the eggs, pour them into a clean bowl separately, do not break the yolk, and observe carefully. If you find a small circle on the surface of the yolk, it looks like a fish's eyes, and if it doesn't, it is not fertilized.

1. The color of the eggshell is different.

Due to the absorption of a large amount of substances, the color of the eggshell of the egg will be relatively dull; The color of the infertile egg will be more shiny and bright, and the sleepy waiter will have no sound when shaking.

2. The egg yolk is different.

When the egg is opened, the yolk has something like a thin thread, and this egg is a sperm egg, and vice versa.

3. The incubation requirements are different.

A sperm egg can hatch a chick under the right conditions; And the infertile egg cannot, if it is left for too long, you can use this to identify.

Infertile eggs and dead embryos are mainly removed by checking the eggs. The egg-bearing characteristics of the infertile eggs and the dead embryonic eggs are shown in Table 2.

Table 2: Characteristics of infertile eggs and dead embryonic eggs.

After fertilization, the placenta of the chicken egg is large and dark (white), and the identification method can be identified by the egg lamp. When under the illumination of the egg lamp, there are opaque black spots in the egg, indicating that the egg is a fertilized egg, and the opaque spot is the part of embryonic development, otherwise it is an unfertilized egg.

It shows that the eggs in the current chicken farms are generally unfertilized.

In addition, it can also be illuminated on the 5th and 6th days after incubation, and the infertile eggs can be illuminated, and the eggs without insemination are transparent, and sometimes the ** of the eggs shows a black shadow (yolk); The air compartment of the live embryo egg is clearly defined, the bright red vascular network spreads from the center of the embryo to the periphery, and the black eyespot on the head of the 5-day-old embryo is clearly visible.

Teach everyone how to identify fertilized eggs, so that they can hatch chicks or ducklings at home.

When an egg is illuminated by a light source, the one with a black shadow in it is a fertilized egg, and the one without a black shadow is an unfertilized egg. Most of the eggs we buy from the supermarket are unfertilized. Generally speaking, the color of the eggshell will be dull due to the large amount of material absorbed by the fertilized egg, while the color of the unfertilized egg will be brighter.

Open the egg and pour it into a bowl, do not break the yolk, if you look closely, you will find that there is a small circle on the surface of the yolk, which resembles the eyes of a fish is a fertilized egg, if not, it is an unfertilized egg.

A fertilized egg is an egg laid by the mating of a rooster and a hen, and under the right conditions, a chick can be hatched, while an unfertilized egg cannot hatch a chick.

Generally, fertilized eggs will be lighter than ordinary eggs, because some of the substances in the eggs are absorbed by the eggs before the sperm is cultivated, and there will be a sound when shaken, while the unfertilized eggs have no sound.

The egg itself is translucent, and the internal situation can be clearly observed by using the egg illuminator, and the purpose of the egg is to pick out those infertile eggs, dead eggs, and weaker weak eggs.

The whole incubation process is divided into three times

The first time is after the start of incubation.

Five or six days, you can see the eye point egg surface can be seen to account for four-fifths of the entire egg surface, the color is bright red is a normal fertilized egg, if the blood vessel part does not account for four-fifths of the egg surface and can not see the eye point, it is determined to be a weak sperm egg, the egg is turbid, there is a blood circle, blood clots are dead sperm eggs, if the egg is shiny, only see the shadow of the egg yolk, it is determined to be a non-sperm egg.

The second time to take the egg after the tenth day to the eleventh day after hatching, the blood vessels in the small head part of the egg are normal eggs, if not gathered is a weak sperm egg, if the air chamber is more blurred, the embryo is black ball, it is determined to be a stillborn egg.

On the eighteenth day after hatching, the third time the egg was incubated, the small head of the egg was pointed at the egg, and the shiny part could not be seen, and the big head was close to the air chamber with a red band about 1 cm wide, which was a normal egg, if the band was not red, it was determined to be a dead egg; Dead eggs, infertile eggs, and some particularly weak eggs should be discarded after each irradiation.

Egg lighting is an important basis for checking the development of embryos and regulating incubation conditions. You can't take out the eggs at any time and take care of them, which is not good for hatching.

Infertile eggs and dead embryonic eggs can be identified based on the characteristics in Table 6.

Table 6 Egg status of infertile eggs and dead embryo eggs Egg date Eggless eggs Dead embryo head photo (day 6 and 7) The inside of the egg is transparent, the yolk is faintly shadowed and floating, and the boundary of the air chamber is not obvious The inside of the egg is transparent, and the shadow of the egg yolk is enlarged or scattered and floating. The air cell is enlarged, and the marginal boundary is not obvious. It can be seen that there are blood streaks or blood clots, and the egg is transparent, the dark shadow of the egg yolk is enlarged or scattered, and the dark shadow is not easy to see, the air cell is enlarged, and the edge boundary is not obvious The egg is translucent, no blood vessels are distributed, and there are dead embryo masses, the air chamber is significantly enlarged, the boundary is not obvious, and the egg is not warm (day 24) The egg is translucent, no blood vessels are distributed, and there are dead embryo masses.

The air chamber is significantly enlarged, and the boundary is not obvious. Eggs are not warm 15What are the causes of embryonic death?

How to overcome? Poor egg quality and unstable incubation conditions are the main causes of embryonic mortality. Reduced health status and feed nutrient levels of breeding birds can lead to a decrease in the quality of eggs and an increase in stillbirths. Seed.

Infertile eggs and dead embryos are mainly removed by checking the eggs. The egg-bearing characteristics of the infertile eggs and the dead embryonic eggs are shown in Table 2.

Table 2: Characteristics of infertile eggs and dead embryonic eggs.