Abstract
The technology provides for the intramuscular injection of ultrafine particles of silicon dioxide during the synchronization of sexual heat at a dose of 10 μg/kg to increase the yield of offspring. The experiment involved the Red Steppe cattle. There were two groups of 10 cows exposed to estrous synchronization with oestrophan. In the experimental group, the animals were injected with a solution of SiO2 nanoparticles simultaneously with the second injection of oestrophan. All cows were inseminated artificially. In the experimental group, the fertilization rate was 70.0 %, while in the control group – 60 %. FSH and LH dynamics in the blood serum in both groups was similar, but in the experimental group, the level of hormones during an induced estrous cycle changed more dramatically.
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