The 'maki' was the base of 'Musha (warrior)=a mounted warrior' (busha=cavalry busha) and the high quality 'maki' was mainly for the pasture of court officers or imperial court Kanboku (state-owned stock farm) and Mimaki that Mimaya-Betto of in no cho had the important post of publicly putting many bushidan under its control as well as sending them for private matters.
「牧」が「武者＝騎馬武者」の拠点であり、優良な「牧」のほとんどが官牧・御牧であった時、院庁の御厩別当は、多くの武士団を公的に支配下に置き、更には私的にも従属させてゆく重要なポストであった。