 Following this battle, the Carolingians began to increase their heavy cavalry, which resulted in the seizure of land (for fodder production), and a change in tribute payment from cattle to horses.As the importance of horse breeding to successful warfare was realized, planned breeding programs increased.Many changes were due to the influence of Islamic culture through both the Crusades and the Moorish invasions of Spain; the Arabs kept extensive pedigrees of their Barb and Arabian horses via an oral tradition.