Use of a premix for dairy cows during the first period of lactation

Abstract

This work includes scientific investigations of the new recipe of a premix for the dairy cows in the first period of lactation. Use of a mineral-vitamin premix has positive influence on milk performance through the increasing the daily milk yield from 18 to 20 kg or on 2.5 kg per cow, the contents of a protein in milk from 2.5 to 2,65%, casein in milk from 1.93 to 2.07%, mineral matter from 0.77 to 0.82%. Economic effect per cow in the trial group has made 404.1 lei in comparison with the control group.