The invention mainly relates to the technical field of breeding, and discloses a method for preserving laying hen
hatching eggs. The method comprises the steps of
hatching egg selection,
hatching egg
elution and hatching egg film spraying. The method is simple and convenient to operate, the preservation time of the hatching eggs is prolonged to 18-20 days, the hatchability reaches 90.8%, and
economic income is increased by 16.8%. The fresh hatching eggs are placed in a hollowed egg plate,
elution liquid is sprayed,
dirt on the surfaces of the hatching eggs is washed away, bacterium inhibition and bacterium resistance are achieved,
pathogenic microorganism infection is avoided, nutritional ingredients are increased, and
embryo activity is kept. The
elution liquid is rich in
calcium, the thickness of egg shells can be increased, the large ends are downwards during spraying, the large ends are upwards after spraying is completed, the large ends are fast dried, it is avoided that the elution liquid directly impacting on the large ends, the
contractility and completeness of airbags are kept, and the preservation time of the hatching eggs is prolonged. Protection liquid is sprayed to the hatching eggs, germs on the surfaces of the hatching eggs are killed, protection films are formed on the surfaces of the hatching eggs,
yolk carries out
dormancy, more nutritional ingredients and
high activity are reserved, and the preservation time is prolonged.