A method of hatching of hatchery eggs that includes: (a) treating the egg shell surface with a coating composition comprising a coating agent, to form a coating on the surface of the eggs shell and (b) incubating the egg under conditions to cause hatching to occur. The hatching yield of the hatchery eggs is improved as compared to control eggs not treated as defined in (a). Also discloses is a composition for treating of hatchery eggs prior to incubation. The composition includes a coating agent, and the composition improves the hatching yield of hatchery eggs.
