Assessment of the combinational ability of genotypes by indicators of growth and development of offspring in different climatic zones of the Russian Federation
Journal: Veterinariya Zootekhniya i Biotekhnologiya
Year: 2023

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 Ide