This study wascarried out to evaluate the nutritive value of elephant grass (Pennisetumpurpureum, Schum.) silages with the addition of 0, 4, 8, 12 and 16% dehydratedmango (Mangifera indica, L.) by-product (DMB), on the fresh matter basis.A randomized complete design with four replications was used. As experimentalsilos, 210L plastic drums were used. Dry matter (DM), organic matter (OM), crudeprotein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose(HCEL), ether extract (EE), total carbohydrates (TC), non-fibrous carbohydrates(NFC), neutral detergent insoluble nitrogen (NDIN, % total N), acid detergentinsoluble nitrogen (ADIN, % total N), pH values, ammoniacal nitrogen (% totalN), lactic acid, acetic acid, butyric acid and propionic acid levels were determined.The DM, OM, CP, EE, NFC, NDIN, lactic acid and propionic acid levels increasedwith the DMB addition while the NDF, ADF, hemicellulose, N-NH3/ammoniacalnitrogen levels and the pH values decreased with the DMB addition. The additionof DMB had a quadratic effect on the acetic and butyric acid levels but therewas no effect with the addition of DMB on TC and ADIN. The DMB can be used atthe ensiling of the elephant grass, because the addition of 8.6% improves thesilages fermentative process. However, these silages have low crude proteinlevels and high contents of ether extract and nitrogen compounds mixed withthe fiber (NDIN and ADIN) in the silages, that may damage their use by animals.
