Combined Ensiling of Tropical Beans and Sugarcane Stalks: Effects on Their Secondary Metabolites

In this study, the effect of mixed silage on chemical composition, ensilability, in vitro cellulase digestibility and some their plant secondary metabolites (PSM) were assessed. The lab-scale mixes made triplicate from sugarcane (Saccharum spp.) stalk Canavalia ensiformis or Mucuna pruriens beans (Santa Clara, Cuba). Sugarcane stalks at a ratio 40:60 (on DM basis), respectively, combination with mixture microbial inoculants (Lactobacillus acidophilus, two Kluyveromyces fragilis strains, 4 × 105 colony forming units (CFU)/g fresh matter). Before after ensiling, ensilability contents PSM (trypsin inhibitor, L-canavanine, total tannins, L-dopa phytic acid) determined. A complete factorial design to assess ensiling time (30, 60 90 days), legume type (LT) interactions assessed parameters performed. better fermentation quality M. pruriens–sugarcane material [e.g., lower (p < 0.05) pH ammonia N content higher concentration lactic acid] was observed as compared C. ensiformis–sugarcane material. process reduced 0.001) studied PSM, being silages than [trypsin inhibitor (86 vs. 76%); L-canavanine (70 53%); tannins (54 50%); L-Dopa (89 86%)], except for acid (65 68%), respectively]. It concluded that enhances feeds by predigestive reduction amount metabolites.