How do I choose my eggs? What is a seed egg

The quality and quality of the eggs have a great impact on hatchability and chick quality, so eggs must be carefully selected before they are set.

The specific selection methods include ** survey, visual inspection, knock inspection and listening, and sampling perspective.

and cross-section, etc. Through the first survey, select fresh eggs from healthy flocks with stable genetic performance, excellent production performance, and appropriate male and female ratio as breeding eggs. The shorter the storage time of eggs used for hatching, the better, and it is generally appropriate to keep eggs within a week.

Through visual inspection, select eggs with normal shape, clean and no cracks, normal eggshell structure, and shell color that meet the requirements of the breed for seeding, and remove too long, too round, too dirty, and sand skin.

Eggs with steel skins, waist drums, and other deformities. Knock to check the sound, that is, the operator holds 3 eggs in each hand, rotates his fingers, makes the eggs gently collide with each other, listens to their sounds, selects the whole eggs with crisp sounds, and removes the broken eggs or cracked eggs with the sound of breakage. Perspective is the egg, through which the broken shell or cracked eggs can be further removed, and the internal quality of the egg can also be observed, and the eggs with small air chambers, frenulum and complete yolk can be selected as breeding eggs.

The purpose of sampling dissection is to directly observe the structure of the egg and the quality of the yolk. The cut-through is to open the egg and pour it into a horizontal glass plate, the fresh egg does not expand on the plane, the four layers of egg white are obvious, and the concentrated egg white is high.

The yolk is located in **, round and convex, with a pronounced contour. The contents of aged eggs expand, the concentrated egg whites disappear, and the yolk is flattened and expanded.

Dirty eggs refer to eggs that are stained with feces, broken egg liquid, wet bedding and other dirt on the shell surface, and dirty eggs cannot be used as breeding eggs for incubation. Because the dirt on the surface of the shell will block the pores on the eggshell, affecting the gas exchange of the egg, and after the dirt is contaminated, it will contaminate the normal egg and the incubator, resulting in an increase in stillbirths, a decrease in hatchability, and an impact on the quality of chicks. If a small number of eggs with low contamination are to be used as breeding eggs, the dirt can be scraped to remove the dirt and placed in a separate incubator for incubation.

1) Eggs must come from a healthy, high-yielding flock of breeding geese, and only eggs laid by breeding geese can be used as breeding eggs. The ratio of male to female in healthy breeding geese should be appropriate (1 3 5), and the fertilization rate should be high.

2) The size of the eggs should be moderate, and the general egg weight is 160 200 grams. Eggs that are too large or too small will affect hatchability, survival rate and growth and development of goslings.

3) The egg shape is oval. Eggs that are too sharp, too round and misshapen cannot be used as breeding eggs, and double yolk eggs are not allowed to be used as breeding eggs. Eggshell***.

The surface of the eggshell should be fine, the thickness should be moderate, and the "steel eggs" that are too thick, the "sand eggs" that are too thin, and the "wrinkled eggs" that are uneven in thickness cannot be used as eggs. The color of the eggshell should conform to the standard color of this variety.

4) The eggs should be kept short and fresh. The shorter the egg storage time, the fresher it is, and the longer the egg storage time affects the hatchability.

5) Eggs should be cleaned. Fresh eggs have a smooth, spot-free, stain-free surface and are shiny.

Figure 6 - 2 kinds of eggs.

When selecting eggs, eggs of uniform size and weight should be selected to be incubated in the same incubator. Small eggs, double yolk eggs, deformed eggs, sand shell eggs, threaded eggs, soft shell eggs and broken eggs should be excluded when selecting.

Tips for choosing eggs are shared with everyone for a win-win situation.

Ways to tell if an egg is a breeding egg:

1. Light irradiation method.

If you want to distinguish whether the egg is fertilized, you can hold the egg and illuminate the oval surface of the egg with a light, so that the situation inside the egg will be presented, if you want to see more clearly, you can use the dark sky or hint inside**, or amplify the intensity of the light source.

Compared with ordinary eggs, fertilized eggs will have some more black filaments and black spots, which are the development of embryonic eggs, among which the black spots are the fertilization points, and the ordinary eggs will show a solid color oval shape as a whole after irradiation.

2. Distinguish between open eggs.

The use value of general fertilized eggs and ordinary eggs is comparable, there is no special difference, so while eating eggs, we can also distinguish the types of eggs by the way, first open the eggs, do not stir them and put them in the bowl to observe, the egg whites of ordinary eggs will be scattered, the egg whites of fertilized eggs are more compact and wrapped in egg yolks, the yolks of fertilized eggs will appear more full and round than ordinary eggs, more prominent, in addition, we can also see that there is an obvious black spot in the yolk of the fertilized egg, That's the point of fertilization mentioned earlier.

An egg is a fertilized egg, which is distinguished from a non-egg by the presence or absence of an embryo.

Eggs are embryonic, and when you look at them under the light, you will see a small black dot at one end of the air chamber, while non-eggs do not. This is generally the way to distinguish them.

Breeding eggs are a variety of eggs that can be used to incubate and breed young birds, i.e. fertilized eggs.

The difference between breeding eggs and regular eggs:

1. The laying hens are different.

Roosters are involved in the laying flock of egg-laying hens, and there must be several healthy and relatively strong roosters. The first thing to do is to pay attention to the quality of the breeders, and select those eggs with stable genetic performance, excellent production performance, high fecundity and good health.

Ordinary edible eggs are not allowed to have roosters, and there are only hens in the flock.

2. Whether it can hatch chicks.

Breeding eggs are fertilized eggs, edible eggs are unfertilized eggs, and only the former can hatch birds, which is indistinguishable from the appearance.

Eggs can be used to incubate a variety of eggs for breeding young birds.

Fertilized eggs, which are used to hatch chicks, are usually unfertilized eggs sold in the market.

It is an egg that can hatch chicks.

Eggshell: The thickness should be moderate, the texture should be uniform and fine, and the shell color should meet the requirements of the variety. The eggshell is porous, too thin, and the surface is not smooth, commonly known as sand shell eggs, etc., the eggshell is slippery and easy to break during incubation, and the water evaporation is too large and the hatching rate is low.

On the contrary, the eggshell is too thick, the texture is too dense, and the pores are few, commonly known as iron-shelled eggs, because the water and carbon dioxide in the egg are difficult to discharge during hatching, and the egg embryo is not easy to break through the eggshell, resulting in embryonic death.

The size of the eggs: due to the variety and the draft is different, it should meet the egg weight standard of the variety, and the eggs that exceed the standard 15% should not be used as eggs. Egg shape refers to the number of duck eggs (longitudinal diameter, transverse diameter) generally required within the range.

Cleanliness: There should be no feces, broken egg liquid and other dirt on the eggshell of the egg.

1. The shape and size of the eggs should be appropriate. Each breed has a certain range of egg weight requirements, generally 55 to 65 grams is appropriate, more than 15% of the standard range of eggs should not be reserved for seeding.

2. The egg shape should be normal. The egg shape should be oval, the egg shape index (the ratio between the longitudinal and transverse diameters of the egg) should be between, and eggs that are too long and too round should not hatch.

3. The structure of the eggshell should be normal. The surface texture of the eggshell should be dense and uniform, smooth, and free of wrinkles or uneven deformities. "Sand eggs" with too thin shells and rough shells and "steel eggs" with too hard shells cannot be used for hatching.

Lack of burning. 4. The color of the eggshell should meet the variety standard. The color of the eggshell of purebred chickens is the same, and there are no spots on it.