“…In the tropics and subtropics, when the dry season results in a sharp decline in the quantity and quality of grasses and herbs, additional feeds such as those offered by woody forages (leaf litter, shrubs and trees) are increasingly selected (Pfister and Malechek, 1986;Marquardt et al, 2010;Müller et al, 2012). However, woody plants in tropical regions often contain potentially detrimental substances such as PSM (AlonsoDíaz et al, 2010).…”