How Do I Know Fertilized Canary Eggs?

Methods for verifying the fertilization of canary eggs

Fertilization of canary eggs and how do I know which canary eggs are fertilized? The process of verifying the fertilization of eggs is important. Leaving unfertilized eggs in the nest will cause damage and contamination of the nest and live embryos. Removing unfertilized eggs will also help leave the bird the opportunity to care for the remaining eggs or hatch them. Here are the most common methods for examining fertilized eggs:

Using a candle or flashlight

This is the traditional method used to verify the fertilization of eggs, which is as follows:

First of all, (2-5 days) the eggs must pass the incubation period before they are examined; This is to make sure that the fetus grows to the size that we can see.
We take the eggs from the nest to examine them, and we have a safety period of 10 minutes, during which the embryos are not affected despite the low temperature of the eggs, taking care not to leave the eggs near a heat source; To prevent the fetus from dying.
Set up a light source using a candle or flashlight.
Mark the egg, the shell becomes transparent so we can see what’s inside.
We look for a dark spot full of blood vessels that represents the embryo, after we can clearly see the internal content of the egg.
There are clear signs that enable us to identify the fertilized egg, represented by the dark spot that indicates the formation of the embryo, and the noticeable network of blood vessels inside it, in addition to noticing the presence of movement inside it, which gives an indication of the presence of life inside the egg.
In the event of the death of the fetus inside the fertilized egg, we will notice the presence of blood spots in the form of rings or strips, and because the fetus has died, we will not see the network of blood vessels that were nourished. He. She.
As for the originally unfertilized egg, which is called the sterile egg (in English: Yolker), it is very clear; This is due to the absence of a network of blood vessels, or any blood spots of different shapes inside the egg.

Put eggs in water

It is one of the old and well-known methods of examining eggs, and it is as follows:

Waiting until several days have passed since the eggs were placed, so that the embryos have begun to develop and develop without being affected by the transfer, and are at a stage of maturity that allows for examination without being harmed. This may happen if they are transferred early. On the other hand, examination at a late time is suspended. Harm to chicks.
Bring a bowl of warm water, and you should pay close attention to the water temperature; So as not to cause any harm to the eggs during the examination.
We place the eggs in the bowl with extreme caution so as not to cause them any harm, because eggs are very fragile.
Observe the eggs, and see if the eggs float to the surface of the water, or sink to the bottom or center of the bowl.
If the eggs sink, they are fertilized, as the formation of the embryo inside them increases the weight of the eggs, and causes them to sink.
If the eggs float, they are spoiled. This is because the embryos do not form inside them, so their weight remains lighter and they float on the surface of the water.

Open the eggs

It is the most accurate method, and it is used to examine eggs in the first stages of incubation, which is as follows:

We break an egg if its shell is broken, or we break a healthy egg; To check the rest of the eggs.
We check the details of the egg to see if it is fertilized or not.
All eggs contain a white spot whether they are fertilized or not.
Fertilized eggs are characterized by containing the white spot in a circular shape, and the white color of the spot is completely opaque, with solid and clear edges, and the spot is surrounded by a light outer part of it, which is semi-transparent in color.
As for unfertilized eggs, they have an irregularly shaped white spot, which is very pale white and has a blurry color.

Reasons for the production of unfertilized eggs

The production of unfertilized eggs is called avian infertility, as infertility in birds is not the result of a lack of egg production, or lack of egg production (poor hatching), but rather results from the production of unfertilized eggs that are unable to produce fully developed embryos, [3] which is a ^problem . It has several reasons, and here are some of the reasons:

Malnutrition

Nutrition plays an important role in the production of healthy eggs, as a lack of dietary calcium, sodium, and energy can lead to the production of less fertile eggs, and excessive intake of zinc supplements can lead to infertility as well as the production of unfertilized eggs. egg.

Malnutrition may also occur when a bird relies only on seeds for its food, or when the diet lacks variety, and is devoid of leafy vegetables and eggs, resulting in a deficiency of calcium, vitamin D, and other essential minerals.

Genes

Hybrid eggs have a low ability to fertilize, and inbreeding, which is reproduction that occurs between members of the same family, results in poor semen quality and physical defects.

Health and age problems

The poor health condition of the couple will lead to decreased fertility, or the death of the chicks inside the eggs, so it is necessary to be followed up by a veterinarian, and checking the white blood cell count will be important in this case. It should be noted that excessive medication may lead to fertility problems in males. .

social problems

It is important to limit the disturbances surrounding birds during the breeding season, such as the large number of visitors and the presence of some animals such as annoying dogs , animals, cats and other birds, as birds with the intention of mating must be combined in one quiet place, where they lay eggs, and then mating occurs without problems.

Environmental problems

A constant or almost constant temperature must be maintained in the bird cage; Because the severe change in temperature may negatively affect the birds, and the severity of the effect may reach temporary sterility, and affect the quality and fertility of eggs.

It should be noted that after laying the eggs, a stable environment must be provided for incubation, as the incubators must be placed in a place where they maintain a temperature of approximately 21 degrees Celsius, as all incubators can work at temperatures ranging from (16-27). ) degrees Celsius, and their ability to continue hatching at temperatures up to 33 degrees Celsius.

Care must also be taken to place the incubators in places where direct sunlight does not reach them; As it will contribute to a rapid increase in temperatures inside the incubators, which will affect the eggs. Finally, incubators should not be placed in a place with strong air currents, such as windows, doors, or air conditioning vents.