Ecuador has a diversity of climatic conditions allowing to potentiate the production of tropical fruits throughout the year, some of which are part of industrial processes of concentrates or fruit juice and generate several byproducts or agroindustry residues ranging from 30 to 50% in pineapple ; 65 to 70% in passion fruit and 40.5% in banana. Guinea grass (GG) with different inclusion levels of hulls from pineapple (PH), passion fruit (PFH) and banana (BH) were evaluated using silages, with the following treatments T0: GG 100%; T1: GG 85% + PH 15%; T2: GG 85% + PFH 15% and T3: GG 85% + BH 15%, with 6 replications per treatment. The silages were made in mini silos with 3 kg of capacity, fermented for 60 d and the degradability with the in vitro incubation system with incubation periods of 0; 3; 6; 12, 24; 48 and 72 h. A Completely Randomized Design and Tukey test (P < 0.05) for the means comparison were performed. All the treatments had similar DM degradabilities at 72 h of incubation with a mean of 61.58 ± 0.85%. Degradability of NDF was also similar across treatment with a mean of 51.57 ± 0.47%. T2 reach the highest In vitro degradability of the ADF with contents 0f 49.07 ± 0.72%. Guinea grass is a very usable forage, however, converted into silage with inclusion of pineapple and passion fruit residues, it presented the best degradability coefficients.