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Pokhyl , V., Pokhyl , E., Mykolaychuk , L. and Pavlenko , R. 2020. Influence of a feed additive of organic origin on the sexual activity of rams. Bulletin of Sumy National Agrarian University. The series: Livestock. 3 (42) (Nov. 2020), 57-62. DOI:https://doi.org/10.32845/bsnau.lvst.2020.3.10.