Biochemical blood parameters in bulls fed NCG-N-carbamyl glutamate

The biochemical composition of blood reflects the activity of metabolic processes in the cells of various organs and tissues. Protein metabolism is closely related to physiological processes occurring in the animal body. The aim of the research was to study the effect of the feed additive NCG-N-carbamyl glutamate on the biochemical blood parameters of Simmental bulls during fattening. Two groups of six-month-old bulls were formed according to the principle of pairs-analogues. The maintenance and feeding corresponded to zoohygienic standards. The experimental group was fed with the feed additive NCG-N -carbamyl glutamate in the amount of 5 g per head per day in a mixture of concentrates (wheat, oat, barley, sunflower cake). The duration of the experiment was 90 days. Blood was taken from the jugular vein before feeding once a month. The results of the studies showed that feeding the feed additive during the experimental period contributed to a reliable increase in the content of total protein - 5.10%, 5.90%, 6.50% compared to the control group. In the blood plasma of the experimental bulls during the experimental period, a tendency towards an increase in the content of albumins was noted: 1.0%, 1.65% and 1.76% and gamma globulins - 1.43%, 4.16% and 4.72%, respectively. A reliable decrease in urea concentration by 4.65%, 7.95% and 9.30% was also found, with a reliable increase in creatinine concentration by 4.33%, 5.61% and 6.52% compared to the control group. It can be argued that feeding the feed additive to fattening bulls contributed to an increase in the reproduction of microbial populations in the rumen fluid that produced the bacterial enzyme urease, due to its activation, urea was converted into ammonia faster, part of which was used by the body for biosynthetic purposes, and the other part was excreted by glomerular infiltration.