Abstract
The use of silvopastoral systems improves the sustainability of resources, enhancing the efficiency of the production system, with potential to offer local and global ecosystem services. The objective of this study was to evaluate the persistence of Andropogon grass (Andropogon gayanus cv. Planaltina) in nine years of growth and the ingestive behavior of goats under continuous stocking in a silvopastoral system during the rainy season, in comparison to the monoculture. The treatments were two production systems: monoculture (Andropogon grass) and silvopastoral system—SPS (native trees mixed with Andropogon grass). The persistence was evaluated between the years of 2011 and 2019 and, the ingestive behavior was evaluated in the grazing periods of 2019 (March, April, May and June). No effect of the interaction between cultivation systems and years was found on forage dry mass yield (P = 0.17) and leaf/stem ratio (P = 0.21), however, the forage dry mass yield was higher (P < 0.01) in the silvopastoral system. There was effect of interaction on the crude protein content (P < 0.01). In addition, there was effect of the different systems on the NDF content (P < 0.01). There were no significant differences (P > 0.10) for the ingestive behavior variables, except for the bite mass that was higher in the monoculture. Significant differences were found for the bite rate, with a mean value of 17.8 bites/min−1. The DM intake in relation to the body weight was equivalent to 2.86% of the BW. There was no difference in the variation of the mean body weight of the goats between the cultivation systems of Andropogon grass. The Andropogon grass pasture grown in monoculture system and SPS remains perennial for nine years of grazing. Goat grazing in the two cultivation systems of Andropogon grass showed similar performance.
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Zambrano, E.R.A., Oliveira, M.E., Edvan, R.L. et al. Silvopastoral system: persistence of Andropogon grass and grazing behavior of goats. Agroforest Syst 97, 1131–1142 (2023). https://doi.org/10.1007/s10457-023-00852-0
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DOI: https://doi.org/10.1007/s10457-023-00852-0