As a Chicken Man, You must Understand the Signals Sent by Eggs!

As a Chicken Man, You must Understand the Signals Sent by Eggs!

In the feeding and management of chicken flocks, the shape of the eggs is also directly related to the benefit of the breeders. Because the shape of the eggs is not up to standard, the quality of the eggshells is not high, and the breakage rate is high, which affects sales. In this way, even if the farmers sell the eggs in egg frames, the price of eggs will definitely be lowered next time due to more damage during long-distance transportation. Therefore, eggshell quality is also related to the breeding efficiency of our chicken farmers. Today I would like to share with you the signals of eggs and reveal the story behind the formation of eggshells.

As we all know, the normal egg is generally oval, the egg shape index is between 1.32-1.42 (egg shape index = the long axis of the egg/the short axis of the egg) is the best, and the surface is smooth and full, and the egg produced by the chicken of the same age is moderate in size and uniform. However, malformed eggs often appear in production, and the so-called malformed eggs are eggs that are not full and irregular in shape. Deformed eggs are various, common are: no shell eggs, thin shell eggs, wrinkled shell eggs, how are these deformed eggs formed?

Thin-shelled eggs have eggshells that are thinner than normal eggs, which is the main reason for the increased breakage rate. The shells of such eggs are easily broken during transportation and sales, thus affecting egg sales. Therefore, thin-shell eggs are also the main factor for egg traders to lower the price of eggs from farms. There are four reasons for the occurrence of thin-shelled eggs. One is insufficient or poor calcium in the diet, an imbalance in the calcium-phosphorus ratio, or insufficient vitamin D3, which affects the absorption and utilization of calcium, eventually leading to uterine secretion. The second is acute environmental stress, and the egg stays in the uterus for a short time, resulting in less calcium carbonate deposition and thin-shell eggs are produced; the third is due to the uterine part of the fallopian tube being affected by viruses and bacterial troubles lead to low calcium secretion function of the shell glands in the uterus, resulting in less calcium carbonate deposition within a fixed period of time and the production of thin-shelled eggs. Fourthly, manganese plays an important role in the process of synthesizing protein, mucopolysaccharide. Therefore, both deficiency and excess of manganese can indirectly cause the occurrence of thin-shelled eggs.

Sand-preserved eggs are caused by calcium secreted by the uterus not being acidified and deposited in the form of particles on the surface of the egg. Therefore, such eggs are prone to egg-laying damage and infection. There are several reasons for the formation of such eggs: one is that when laying hens are deficient in zinc, the activity of carbonic anhydrase is reduced, resulting in uneven calcium deposition in eggshells; the other is that when there is excess calcium and insufficient phosphorus, eggshells develop the chalky substance precipitates, making both ends of the eggshell rough; the third reason is that the fallopian tube and uterus are infected with viruses or bacteria, which destroys the shell glands of the uterus, resulting in sand-preserved eggs; the fourth reason is that the laying hens are under acute stress and the eggs are deposited in the uterus. The residence time is too long, and excess "splashed calcium" is deposited.


3. Blood-spotted egg
Blood-spotted eggs refer to blood spots mixed in the yolk or egg white during the egg formation process. There are two reasons for such excessive eggs. One is that the reproductive system is infected by viruses or bacteria, which causes blood clots to enter the fallopian tube with the egg during ovulation, or the fallopian tube mucosa bleeds and is mixed with egg white during secretion; the other is due to daily insufficient vitamin K in the diet, or excessive amounts of vitamin K analogues such as benzylacetonin, affect the normal function of the blood coagulation mechanism, leading to ovarian or fallopian tube bleeding

4. Blood shell egg
Blood eggs are eggs with blood on the surface of the shell. There are usually two manifestations, one is in the process of egg production in vitro, due to bleeding in the wall of the birth canal, leaving a strip of bright red blood outside the eggshell glial membrane, which can be washed off with water. There are three reasons for this. One is that the eggshell is rough, which scratches the wall of the birth canal and bleeds during the process of production. The second is the birth canal due to E. coli or salmonella infection, causing the birth canal mucosa edema and the birth canal stenosis; The third is due to high feed energy, resulting in excessive abdominal fat deposition, resulting in relatively narrow egg production. Second, in the eggshell formation process, the eggshell gland mucous membrane diffuse bleeding, with the eggshell formation and inlaid in the eggshell clotting or blood spots, so water is not washed away. The reason is that the uterine part of the fallopian tube is attacked by viruses and bacteria, resulting in diffuse bleeding of the uterine mucosa, due to the high temperature in the poultry body, clot oxidation and color deepening, in the formation of the eggshell with the shell gland secrete calcium and inlaid in the eggshell, forming blood shell eggs.

5. Cracked egg
Cracked eggs are eggs in which the adhesive film on the outermost layer of the eggshell is complete, and the calcium is visible with obvious cracks, but the egg can not leak out, and this egg is extremely easy to damage in transportation and cause loss. There are two reasons for cracked eggs. One is the lack of available phosphorus in the eggshell formation process, which leads to poor toughness and brittleness of the eggshell. Cracked eggs appear after impact in vitro. The second is that the layer is subjected to intense stress, resulting in abdominal contraction and oscillation, or there is a blast, resulting in extrusion collision, and the eggshell cracks before the eggshell adhesive film is formed.

6. Shell-less egg
Shell-lless eggs are commonly referred to as soft eggs, that is, egg whites, egg yolks, and an inner shell membrane. There are many reasons, one is the long-term chronic intestinal coccidia, clostridium perfringens, mycotoxin, etc. lead to intestinal diseases persist, intestinal digestion and absorption function is low, resulting in insufficient calcium absorption; The second is that the uterine part of the fallopian tube is destroyed by viruses and bacteria, resulting in the lack of calcium secreted by the shell gland of the uterus, which directly affects the normal formation of the eggshell; The third is the long-term lack of calcium in the diet, the blood calcium concentration is too low, and the calcium in the bones can not be called again, resulting in calcium carbonate can not be deposited and the formation of shelled eggs; The fourth is that the residence time of eggs in the uterine part of the fallopian tube is seriously insufficient, such as laying hens due to acute stress reaction, resulting in eggs passing through the uterine part quickly, failing to form eggshells and discharged from the body; Fifth, laying hens take drugs such as aureomycin internally and combine with blood calcium to form insoluble calcium salts and discharge them from the body, resulting in insufficient calcium sources and affecting the formation of eggshells.

7. Wrinkled egg
 A wrinkled egg is a misshapen egg with a crease-like appearance on the shell. There are two reasons for the formation of this kind of wrinkled eggs, one is due to the lack of copper, so that the formation of eggshell gland collagen and elastin adhesive link is reduced, so that the eggshell film lacks integrity and uniformity, resulting in eggshell creasing during the calcification process; The second is that calcium in the uterus before calcification, due to uterine inflammation caused by uneven contraction, calcification after the formation of wrinkles.

 

8. Pink shell eggs or white shell eggs
Pink-shelled eggs or white-shelled eggs refer to brown-shelled eggs that are lighter in color than normal eggshells. There are three reasons for this situation: one is that the egg-laying hens are infected by viruses or bacteria, which causes the shell glands in the uterus to secrete abnormal pigment; the other is that the intestinal absorption function is reduced, resulting in the loss of vitamins and trace elements insufficient absorption and insufficient synthesis of eggshell pigments; the third reason is due to environmental stress, resulting in abnormal function of eggshell gland secretion of pigments.

9. Yolkless or tubular eggs
This kind of eggs is often caused by extremely small and relatively long eggs. After opening, there is only egg white, no egg yolk or pink or dark red flesh spots. The main reason is that the ovaries and fallopian tubes are infected by viruses or bacteria, the development of follicles is blocked, and the function of the fallopian tube protein secretion department is abnormal. Without the yolk entering the fallopian tube, it falls off and enters the fallopian tube epithelium, surrounded by protein, and then forms a deposited eggshell to form a very small of eggs.

10.Double yolk egg
Double yolk eggs refer to eggs with two yolks connected together after the eggshell is opened. Double yolk eggs are generally larger in size. There are many reasons for the occurrence of such double-yolk or oversized eggs. One is that in laying hens, the two follicles mature at the same time or at a similar time, so that the two yolks meet in the fallopian tube and are wrapped in albumen and eggshell. The second is due to stress or bacterial or viral infection of the ovary, causing two follicles with similar development to fall into the fallopian tube at the same time; the third is caused by improper nutrition or poor management during the breeding period of laying hens, causing the reproductive organs to Development is not balanced enough.

An egg within an egg is also called a double-shelled egg. After the egg is opened, there is still a shelled egg inside, which is still wrapped in a layer of egg white. The reason for this kind of egg is that after a normal egg is formed, it is suddenly frightened or has some physiological abnormality when it enters the birth canal, causing the fallopian tube to reverse peristalsis, causing the formed egg to be sent back to the upper part of the fallopian tube, and then again. Moves downward and is re-wrapped by egg white, shell membrane, eggshell, etc. to form.

12. Flesh-speckled eggs

Flesh-speckled eggs are caused by a small amount of fallopian tube shedding of mucous membrane mixed into the egg white during egg formation. This kind of egg is formed due to the infection of the reproductive system by viruses or bacteria, which leads to fallopian tube inflammation and mucosal shedding, and is mixed in when egg white is secreted.

13. Yolk egg

Yolk eggs refer to eggs with normal yolk and no egg white or very small amount of egg white. Generally, the egg body is small. After opening, only the yolk is visible, but there is basically no egg white, or a very small amount of egg white. This kind of egg is caused by virus or bacteria infecting the protein secretion part of the fallopian tube, causing abnormal secretion of egg white, and is formed directly without wrapping the egg white.

14. Small yolk egg

Small yolk eggs refer to eggs with smaller yolks than normal yolks. Generally, small yolk eggs have smaller bodies and softer yolks. The reason for the appearance of such small yolk eggs is mainly due to excessive aflatoxin in the feed, which affects the liver's synthesis of very low-density lipoprotein and vitellogenin, causing the development of follicles to be blocked and stagnated. After a certain period of time, the follicles will automatically fall into the fallopian tube.