For citations:

Khromova О.L., Abramova N.I., Selimyan M.O., Zenkova N.V. He origin and breeding value of the breeding bulls from which cows with record productivity were obtained. Bulletin of NSAU (Novosibirsk State Agrarian University). 2024;(2):270-280. (In Russ.) https://doi.org/10.31677/2072-6724-2024-71-2-270-280