ESTRATÉGIAS DE SUPLEMENTAÇÃO ANIMAL EM PASTEJO DE Panicum maximum BRS Zuri EM SISTEMAS INTEGRADOS DE PRODUÇÃO AGROPECUÁRIA

Abstract

Intensive supplementation of grazing animals can increase profitability of cattle and the profitability of the livestock system. The objective of this work was evaluate the adoption of different supplementation strategies in the termination of grazing heifers under an integrated soy and cattle production system. cutting and analyzing economic and productive performance. The experimental area was divided into nine paddocks with 1.54 ha each, with three repetitions for each supplementation level: mineral salt (ad libitum), 0.5% of live weight (BW) and 1.5% of PV (protein, energy and mineral supplements). The termination of heifers under grazing on Panicum maximum cv. BRS Zuri is a good option in integrated systems, for its high resistance power in the period of off season. The gain in arrobas of heifers under finishing in pastures of Integrated systems increased linearly with supplementation levels. THE supplementation of these grazing heifers in the off-season is feasible economically. The three different levels of supplementation did not change the Biomass availability before soybean sowing. Supplementation with 1.5% of the PV in relation to the supplementation with mineral salt increased the levels of calcium, magnesium, phosphorus, potassium and sulfur in forage biomass in the timing of sowing soybeans. These results support the hypothesis that supplementation of livestock during grazing can increase the availability of nutrients for the next crop in succession. Therefore, new studies Assessing soil fertility and crop productivity are important. to provide a better view of the interaction between animal management, fertility of the soil and the general productivity of the integrated crop-livestock system.