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Celem pracy było oszacowanie poziomu inbredu i spokrewnienia w populacji koni rasy American Quarter (AQ) hodowanych w stadninie Roleski Ranch w Starych Żukowicach w Małopolsce. Dane stanowiły rodowody 76 koni rasy AQ (40 ogierów, 36 klaczy) urodzonych w latach 1993-2012. Współczynniki inbredu (FX) i współczynniki spokrewnienia (RXY) szacowano metodą Tiera. Dokonano również oceny efektywnej liczby...