Selection of strict egg selection, preservation, transportation and disinfection of eggs Selection of eggs should be derived from high-performance, non-egg-transmitted diseases, high fertility rates, feeding of nutritious feed, well-managed breeder flocks, and fertilization rates up to the chicken species. Requirements, generally brown egg fertilization rate of 85% to 90%, white shell eggs fertilization rate of 92% to 98% or more, uniform eggshell texture.
Books, rough-faced "salp eggs" and overly hard "steel eggs" cannot be hatched. The egg weight should meet the requirements of this breed. The egg shape is oval and the egg shape index is preferably 0.74.
Generally, the first 2 weeks to 3 weeks of production of eggs, oversized and undersized eggs, and deformed eggs should not be hatched.
The shell surface of the egg is to be clean and free of cracks, and the color conforms to the standard requirements of the chicken species. Eggs that contaminate feces, blood, eggs, and cracked eggs can cause embryos to die during hatching, resulting in reduced hatchability and reduced chick quality.
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