Comparative Rumen Degradability of Some Legume Forages between Wet and Dry Season in West Sumatra, Indonesia

  • Evitayani, Evitayani (The United Graduate School of Agriculture Sciences, Tottori University) ;
  • Warly, L. (Animal Husbandry, Sriwijaya University) ;
  • Fariani, A. (Animal Husbandry, Sriwijaya University) ;
  • Ichinohe, T. (Laboratory of Animal Sciences, Life & Environmental of Science, Shimane University) ;
  • Abdulrazak, S.A. (Division of Research & Extension, Egerton University) ;
  • Fujihara, T. (Laboratory of Animal Sciences, Life & Environmental of Science, Shimane University)
  • Received : 2003.07.31
  • Accepted : 2003.11.13
  • Published : 2004.08.01


An experiment was conducted to evaluate the potential nutritive value of five legume forages (leaves and twigs) in West Sumatra during wet and dry seasons. The chemical composition, in vitro dry matter (IVDMD), organic matter (IVOMD) and crude protein digestibility (IVCPD), in vitro gas characteristics and estimated metabolizable energy (ME) showed variation among legume forages and between different seasons. Crude protein (CP) ranged from 14.2 to 27.8% DM in the wet season, with a significant (p<0.05) reduction in dry season. C. pubescens, G. maculata, L. leucocephala and P. phaseloides showed the least reduction in CP content. The NDF, ADF and lignin were about 39.0, 26.5 and 6.1% DM, respectively in the wet season, and significantly (p<0.05) increased in the dry season, except for NDF of C. mucunoides and C. pubescens. For IVDMD, IVOMD and IVCPD significantly increased in the wet season, but values remained as high as over 50.0% of DM. The in vitro gas characteristics and metabolizable energy were significantly (p<0.05) higher in wet season than the dry season. During both seasons, the rate of constant (c) for G. maculata and ME content for C. pubescens and P. phaseloides were not significantly (p<0.05). Results demonstrated that P. phaseloides and L. leucocephala have a good nutritive value during both wet and dry seasons. Further studies on feeding trials are needed to quantify the animal responses when offered these legume forages.


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