(2007), podemos concluir que ambas as racas, pertencentes a especie Bos primigenius indicus, foram capazes de acrescentar, em media, +0,10[cm.sup.2] na area de olho de lombo em seus descendentes, existindo, portanto, uma variabilidade entre touros destas racas para aumento da AOL.
Breeds of large cattle which most closely resemble Bos primigenius, such as Highland cattle and the white Maremma breed from Italy, are being bred with each other in a technique known as "back-breeding".
These results may support the hypothesis that Hanwoo breed had not been originated from a crossbred between Bos primigenius in Europe and Bos indicus in India, however, North Eastern Asian cattle breeds might be had separate domestication from the European and African Bos taurus followed by the small extents of Bos indicus influx (Mannen et al., 2004; Yoon et al., 2005).
It seems likely that zebu cattle may have been domesticated originally from wild oxen (Bos primigenius namadicus) in South Asia, more particularly in Beluchistan region (Meadow, 1993; Wendorf and Schild, 1994; Kumar et al., 2003).