UDC 636.4.084.087.74: 612.017.11
doi: 10.36871/vet.san.hyg.ecol.202302016
Authors
Ludmila A. Nikanova,
Olga A. Artemyeva,
Federal Research Center for Animal Husbandry named after Academy Member L.K. Ernst,
Moscow region 142132, Russian Federation
Abstract
The article considers the possibility of using protein supplements obtained by microbiological
synthesis in the nutrition of pigs instead of traditional protein supplements. According to
the principle of analogues, two groups of pigs were formed after weaning. Pigs of the control group
received full-fledged compound feed, the experimental group received a grain mixture with the inclusion
of 10% high-protein concentrate.
The introduction of a protein feed additive obtained by microbiological synthesis into the diet
of pigs had a positive effect on the metabolism, resistance, safety and productivity of experimental
animals. In the blood of pigs of the experimental group, the content of lysis and lysozyme was 13.6%
and 18.8% higher than in the control group. The bactericidal activity of blood serum in the experimental
group was 19.5% higher than in the control.
When assessing the effect of feed products and biologically active substances on the body, special
importance is attached to the formation of nonspecific resistance of the body. The number of
hemolytic microorganisms in the intestinal contents of pigs of the experimental group is an order of
magnitude lower than in the control. The ratio of lactose-positive representatives of the Escherichia
coli group responsible for the fermentation of carbohydrates, in particular, lactose, was significantly
higher (by more than 2.73 times) in the experimental group that received a high-protein concentrate
to the main diet.
The inclusion in the diet of young pigs, consisting of grain components with the inclusion of 10%
high-protein concentrate, had a positive effect on the growth rate of pigs and allowed to increase the
average daily gain in live weight by 19.0%. The safety of young animals in the control group was
93%, in the experimental group 100%.
Keywords
pigs, microbiological synthesis, protein, amino acids, body resistance, microbiocenosis