METHOD FOR EARLY SELECTION OF LAYING HENS Russian patent published in 2021 - IPC A01K67/00 

FIELD: poultry farming.

SUBSTANCE: invention relates to the field of poultry farming, in particular to the selection of poultry. The method for early selection of egg chickens includes keeping chickens in individual cages from the age of 120 days. At the same time, at the age of 22-23 weeks, daily observations are made of the time of laying eggs in the first 4 hours after turning on the light in the poultry house. Evaluation and selection of hens is carried out by weight, measurements of three consecutively laid eggs without interruption and the proportion of yolk, which is determined by the formula Y=0.146X1-0.08X2+14.12, where Y is the proportion of yolk; X1 is the mass of eggs; X2 is the shape index. The selection is carried out without violating the integrity of the shell. If the proportion of the yolk is less than 23%, then the chickens are classified as highly productive.

EFFECT: use of the invention will make it possible to assess and select chickens for egg production at least 2-3 months earlier than the traditionally used methods.

1 cl, 1 dwg, 2 tbl, 1 ex