UDC 636.082
DOI: 10.36871/vet.zoo.bio.202307013
Authors
Olga M. Mukhtarova,
Moscow State Academy of Veterinary Medicine and Biotechnology – MVA by K. I. Skryabin”, Moscow, Russia
Abstract
The article assesses the combinational ability of the main used genealogical lines of the Holstein
breed in terms of growth and development of offspring. The growth of animals was assessed by
the live weight of calves at birth, at 6 months, at 10 months, per year and at 18 months, the development
of animals was assessed by the age of the first insemination and the live weight at the same
time. The combinational ability of such genealogical lines of the Holstein breed was determined:
Vis Back Ideal 1013415, Reflection Sovering 198998 and Montvik Chieftain 95679, in forward and
reverse crosses. The study was conducted in different climatic zones. I climate zone – subtropical
climate (Crimea), II climate zone – temperate continental climate (Voronezh, Leningrad, Moscow
regions), III climate zone – sharply continental climate (Bashkortostan, Novosibirsk, Amur, Chelyabinsk
regions) and IV climate zone – Arctic climate (Arkhangelsk region), the "special" climatic
zone, which also covers the territory of our country, is not reflected in the studies, since it includes
areas of the Far North, with the harshest and coldest climate, unsuitable for breeding dairy cattle
of the Holstein breed.
The conducted studies indicate the presence of the combinational ability of some crosses in terms
of growth and development of young animals. We note the cross of the Vis Back Ideal 1013415
(father's line) and Reflection Sovering 198998 (mother's line) lines as one of the most successful in
terms of growth and development of offspring.
Keywords
Holstein breed, line, combinational ability, line compatibility, cross lines, growth and development
