Testosterone content and variability in adult and young Romanov sheep

In the article, authors conducted a comprehensive study of interior, including biochemical, physiological, physicochemical, cytogenetic, and other indicators in sheep Romanov breed Western Siberia. For study, blood serum samples were taken from 10 rams-producers 30 lambs at four months. Conventional methods took samples. Analyses performed biochemistry laboratory Novosibirsk State Agrarian University using technique competitive enzyme immunoassay with reagent kit “SteroidIFAtestosterone” for quantitative determination testosterone concentration serum. breeding area, constantly monitored content heavy metals water, soil, feed, organs, tissues. The chemical elements did not exceed permissible exposure limit. Enzyme-linked immunosorbent assay was on Thermo Scientific Multiskan FC analyzer. statistical processing experimental data standard descriptive statistics, programming language, or RStudio analysis environment (using functions DescrStats, Summary, Sd, Read. Table, Write. Aes). established influence age ontogenesis rams. Presented figure two variation curves high transgression. average level 1.8 times higher (0.774 mmol/l) than lambs. Testosterone characterized by phenotypic variability. have identified reference intervals depending environmental conditions