FIELD: veterinary medicine.
SUBSTANCE: method comprises exposing the eggs at a temperature of 37.8°C for 21 days before pipping and administration of bioproduct in ovo. The bioproduct is used as "Prolam" and it is administered into the amnion of the egg at a dose of 0.1-0.2 ml on the 18th day of incubation.
EFFECT: method is highly effective for increasing the immune status of hatched chickens, improvement of viability and productivity of young birds.
5 tbl, 1 ex
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