A conservation herd was established in Amajari by the Empresa Brasileira de Pesquisa Agropecuária, the national organisation for agricultural research, in about 1991.

[3]: 36 [4][5] The Lavradeiro is of Criollo or Colonial Spanish type, descending from Iberian horses brought to the Americas by the Conquistadores[6]: 456  Horses of this type were brought into Roraima during the period of Portuguese colonisation in the eighteenth century.

[7]: 24 [5] The horses were managed extensively on the unfenced savannah or lavrado, and a substantial feral population established itself.

[8] A conservation herd of some fifty horses was established by the Empresa Brasileira de Pesquisa Agropecuária, the national organisation for agricultural research, at the Fazenda Resolução in Amajari in about 1991.

[3]: 36 [4] The feral population is at risk of extinction, the principal threats being hunting and uncontrolled cross-breeding with horses of other breeds.