EN
The authors analyzed racing achievements of 242 horses - offspring of the stallions Saragan, Torpid and Kasjan, taking into consideration the family of the mare, moreover - 116 animals, offspring from the daughters of Saragan and Torpid, considering the sire of the offspring. Separately investigated were the racing careers of two and three year old horses, also considering groups comprising more than two horses. It was found that the stallion Saragan produced the best offspring with mares from the families: Silistria, IWP - 2,84 and Justitia IWP - 2,76. The offspring of the stallion Torpid attained its best IWP with mares from the Hybla family - 1.69. Outstanding among the Kasjan offspring are horses from the mare of the Mary Langden family, IWP - 2.29. Among the daughters of the offspring of the stallion Saragan the highest mean IWP were attained with the stallion Kayoon - 2.46, Dakota - 2.33 and Dipol - 2.22. The highest mean IWP among the offspring of the daughters of Torpid were attained by horses from reproducers: Solali - 3.08, Behistoun - 1.44 and Frombork - 1.35.