Relationship between fat mass proportion, milk rate and service period indicators in cattle in highly productive herds

UDC 636.082
DOI: 10.36871/vet.zoo.bio.202403014

Authors

Alexey P. Khramov,
Anna N. Krovikova,
Ekaterina R. Blum,
Moscow State Academy of Veterinary Medicine and Biotechnology – MVA by K. I. Skryabin”, Moscow, Russia

Abstract

The work is devoted to studying the relationship between the duration of the service period, quantitative and qualitative indicators of milk content in groups of highly productive cows, divided in accordance with the 3σ rule according to MFA in the UK with different values of the service period. With the visible dynamics of an increase in productivity indicators, accompanied by an increase in the service period, only a slight connection was established between the duration of the service period with the level of milk productivity and the amount of milk fat, however, no statistically significant differences were identified, which indicates a significant influence on the above characteristics of feeding and housing technology animals. At the same time, in all groups divided by the size of the service period in accordance with the 3σ rule, in terms of milk yield and milk fat, a level of variability was noted approaching 20 %, which indicates the influence of the genetic component (combinative variability) on these characteristics and opens further opportunities to improve the breeding process.

Keywords

cattle, productivity, mass fraction of fat and bulk, service period