Breeding and exploitation of parentstock flock, light line hybrid include commercial layers for hatching eggs and commercial layers for commercial eggs. Commercial layer intended for the production of breeding eggs is reared and exploited on the farms with floor system, while the commercial layer reared for commercial eggs is exploited on the farms with cage battery systems.

DOO "Srbokoka" is involved in breeding and exploitation of parentstock flock for many years. Various line hybrid were present in the production program in the course of time:
-HISEX BROWN
-ISA BROWN
-DEKALB
-SHAWER

Parentstock chickens were imported from Netherland, France, USA and Hungary. Total floor surface of the parentstock farm is 4.400 m²