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Rêgo et al., 2010. Rev. Bras. Zootec., 39 (1), 74-80

Document reference 
Rêgo, M. M. T. ; Neiva, J. N. M. ; Rêgo, A. C. do; Cândido, M. J. D. ; Alves, A. A. ; Lôbo, R. N. B., 2010. Intake, nutrients digestibility and nitrogen balance of elephant grass silages with mango by-product addition. Rev. Bras. Zootec., 39 (1), 74-80

The objective of this study was to evaluate the nutritive value of elephant grass silages with increasing levels of dried mango by-product (DMB). Five addition levels were studied (0, 4, 8, 12 and 16%) using 20 rams, in a randomized complete design with five treatments (addition levels) and four replications. Dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), ether extract (EE), total carbohydrates (TC), non-fibrous carbohydrates (NFC) intake and digestibility were evaluated, as well as the total digestible nutrients (TDN) and the silage nitrogen balance (NB). Mango by-product addition did not influence the DM, CP and TC intakes, the TDN level or the OM, CT and NFC digestibilities. On the other hand, DMB addition reduced the NDF and the ADF intakes, as well as the DM, CP, NDF and ADF digestibilities, and the NB of the silages. There was also a increasing linear effect of DMB addition on the EE and NFC intakes, and on EE digestibility. The elephant grass silage with DMB by-product may not be used as a single feed to ruminants because it reduces the NDF and the ADF intakes and the DM, CP, NDF and ADF digestibilities, as well as the nitrogen balance.

Citation key 
Rêgo et al., 2010