Perg reserve and development of bee colonies of different genealogical formations of the carpathian subspecies

The study of bee colony growth patterns throughout the year makes it possible to substantiate the ways of creating strong families that will ensure high productivity in the collection of bee products. The research was conducted on bees of different genealogical formations of the Carpathian breed in private apiaries in the village of Navariya, Lviv region. To conduct the experimental studies, 6 groups of 10 bee colonies were formed: I – the control group – local bees of the Carpathian population (type “Vuchkovsky”); II – the experimental group – inbred group ♀ UA3-5-9-15.112-2018 x ♂ UA3-5-9-15. 112-2018 (♀ microline “915” x ♂ microline “915”); III – experimental group – breeding cross ♀ UA3-65-2019 x ♂ UA3-5-9-15.112-2018 (♀ microline “Sto” x ♂ microline “915”); IV – experimental group – breeding cross ♀ UA3-5-35-2019 x ♂ UA3-5-9-15. 112-2018 (♀ type “Vuchkovsky” x ♂ microline “915”); V – experimental group – breeding cross ♀ UA3-5-307/67-2018 x ♂ UA3-5-9-15. 112-2018 (♀ microline "67" x ♂ microline “915”); VI – experimental group – breeding cross ♀UA3-5-07-2018 x ♂ UA3-5-9-15.112-2018 (♀ microline “07” x ♂ microline “915”). It was established that bees of different breeding crosses of the Carpathian breed had certain differences in the strength of bee colonies, the number of closed broods, and bee bread productivity. The maximum values of bee colony strength and stocks of perga in all groups were noted during the inspection on 10 June. At the same time, the highest value of bee colony strength was observed in the fifth experimental group (19.7 hives), and the best bee colonies in the second experimental group (6992.0 cells) were found in terms of perg productivity. The highest values of the number of closed brood were recorded during the inspection on 29 May, with the bee colonies of the third experimental group prevailing in this respect (20547.6 cells). Thus, to increase the strength of bee colonies, the number of closed brood, and the bee bread productivity, it is advisable to breed interbreed crosses of the Carpathian subspecies since they are superior to local bees of the Vuchkovsky type in the above characteristics.