How to choose breeding eggs

The quality of breeding eggs is affected by many factors, such as the quality of breeding birds, the preservation conditions of breeding eggs and so on. The quality of breeding eggs has a great influence on the hatching rate, and has a great influence on the survival rate of chicks and adults. Therefore, the breeding eggs must be strictly selected before hatching.

Ensure the quality of breeding birds

In order to provide high quality breeding eggs, it is necessary to ensure stable genetic performance, good production performance, high fecundity, good feeding and management, no diseases transmitted by eggs, healthy and high yield.

Keep the eggs fresh

The more fresh the breeding eggs, the better, the longer the preservation time, the lower the hatching rate of breeding eggs. Generally, the breeding eggs within 7 days are the best, the longest can not exceed 15 days. The breeding eggs cannot be washed with water, and the colloid on the surface of the washed eggs falls off, the microorganisms are easy to invade inside and cause deterioration, and the water in the eggs is also easy to evaporate.

Select the appearance of breeding eggs

Egg shape: the hatching effect close to the oval shape is the best, and the egg shape index (the ratio between longitudinal diameter and microdiameter) should be between 1.30 and 1.35. Eggshell: the eggshell of the breeding egg is required to be dense, uniform and moderately thick, which is not only easy to break, but also the moisture in the egg evaporates quickly, the bacteria are easy to penetrate, the moisture in the egg evaporates slowly when it is too thick, and it is difficult to hatch; different varieties of eggshell color is different, the same variety of eggs, eggshell color should be the same, in line with the characteristics of this variety. Egg weight: the size of the breeding eggs should be moderate, and the closer the eggs are, the higher the qualified rate is. Too large or too small eggs are not suitable for breeding eggs. If the eggs are too large, the incubation time is long and the hatching rate is low. If the eggs are too small, the hatching time is short and the hatched chicks are weak. Cleanliness: the surface of breeding eggs should be clean, there should be no feces or other dirt, dirty eggs due to stomatal blockage, hinder gas exchange, affect normal embryonic development, but also pollute other normal eggs, increase dead embryos and rotten eggs, for some lightly polluted breeding eggs, should be cleaned and disinfected in time.

Internal quality inspection

The internal quality of breeding eggs can be detected by egg perspective, that is, light inspection. The egg shell, air chamber, egg yolk, blood spot and so on can be observed by the method of egg perspective. Where the sticky shell, loose yolk, egg yolk fluidity, there are bubbles in the egg, air chamber deviation, air chamber flow, air chamber in the middle or in the small head of the egg, thin shell egg, soft shell egg, thick shell egg and so on are not suitable for hatching.