Ruminal in situ degradability of dry matter and neutral detergent fiber of sugarcane silage

Authors

  • Aldi F. de S. França Universidade Federal de Goiás, Goiânia, GO, Brazil.
  • Eliane S. Miyagi Universidade Federal de Goiás, Goiânia, GO, Brazil.
  • Alzira G. da S. Pause Universidade Federal de Goiás, Goiânia, GO, Brazil.
  • Susana Q.S. Mello Fundação Universidade Federal do Tocantins, Campus Universitário de Araguaína, Araguaína, TO, Brazil.
  • Hugo J.M.C. Peron Universidade Federal de Goiás, Goiânia, GO, Brazil.
  • Emmanuel Arnhold Universidade Federal de Goiás, Goiânia, GO, Brazil.
  • Alessandra G. Mascarenhas Universidade Federal de Goiás, Goiânia, GO, Brazil.
  • Daniel S. Corrêa Universidade Federal de Goiás, Goiânia, GO, Brazil.

DOI:

https://doi.org/10.17138/tgft(2)207-213

Abstract

The ruminal degradability of dry matter (DM) and neutral detergent fiber (NDF) of 9 sugarcane varieties ensiled 15 months after planting was evaluated, using 3 fistulated Holstein x Zebu cows and incubation periods of 0, 6, 12, 24, 72 and 96 h in a randomized complete block design. Dry matter, crude protein (CP), mineral matter (MM), NDF, pH and in-situ degradability levels were determined. There were significant differences in composition of all evaluated parameters in the silages, except for CP, with the following variations: DM (19.7–23.2%), CP (2.70–3.47%), MM (3.2–5.2%), NDF (67.6–73.8%) and pH (3.8–4.2). The DM fraction ‘a’ differed among sugarcane varieties, with SP 801816 presenting the highest soluble fraction (26.83%). Effective degradability (ED) of DM (32.7–40.9%) and degradation rate ‘c’ did not differ among varieties. The ED of NDF and fraction ‘a’ did not differ among silages, but there were significant differences in fraction ‘b’, with a variation from 36.4 to 41.2%. Highest NDF ED occurred for the varieties RB 835486 (22%) and SP 791011 (21.1%). Further studies with these two varieties with the addition of inoculants and additives at ensiling are needed along with feeding studies to determine animal performance data.

How to Cite

França, A. F. de S., Miyagi, E. S., Pause, A. G. da S., Mello, S. Q., Peron, H. J., Arnhold, E., Mascarenhas, A. G., & Corrêa, D. S. (2014). Ruminal in situ degradability of dry matter and neutral detergent fiber of sugarcane silage. Tropical Grasslands-Forrajes Tropicales, 2(2), 207–213. https://doi.org/10.17138/tgft(2)207-213

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Research Papers