The first
option seems inappropriate in southwest Spain since the production
potential of the pasturelands (dehesa) is limited due the climate (low
and irregular precipitations) and the low fertility of the soil (Olea & San
Miguel-Ayanz, 2006), thus allowing a very low stocking rate. However,
feeding diets based on silage are a feasible option, because they can easily
be produced in irrigated areas located near the feedlots