%0 Journal Article %T SEASONAL CORTISOL LEVELS AND VARIABILITY IN ROMANOV SHEEP IN WESTERN SIBERIA %A Tarasenko, E.I. %A Sebezhko, O.I. %A Morozov, I.N. %K cortisol, hormones, season of the year, blood serum, sheep, Romanov breed %J Bulletin of KSAU %D 2025 %N 0 %P 6 %I Krasnoyarsk State Agrarian University