... , and promote follicular development, increase egg production rate, maintenance of eggs nest, to extend the peak of egg production, egg ... shiny, to reduce eggshell breakage, increase egg weight, and enhance Yolk color; 2 improve the avian fecundity, egg fertilization rate ... increased, hatching rate, hatching rate, etc.; 3 can increase the egg-laying poultry’s resistance to stress factors, such as ...