Auxois
... that merchants at horse fairs appreciated the Auxois horse because its chestnut coloration might conceal dirt better than that of the light gray Percheron or black Nivernais?
... that merchants at <a href="./Horse_fair" id="mwBIQ" rel="mw:WikiLink" title="Horse fair">horse fairs</a> appreciated the <b id="mwBIU"><a href="./Auxois" id="mwBIY" rel="mw:WikiLink" title="Auxois">Auxois</a></b> horse <i id="mwBIc">(pictured)</i> because its <a class="mw-redirect" href="./Chestnut_(coat)" id="mwBIg" rel="mw:WikiLink" title="Chestnut (coat)">chestnut</a> coloration might conceal dirt better than that of the light gray <a href="./Percheron" id="mwBIk" rel="mw:WikiLink" title="Percheron">Percheron</a> or black <a href="./Nivernais_horse" id="mwBIo" rel="mw:WikiLink" title="Nivernais horse">Nivernais</a>?