Improvement of Nutritive Value of Tropical Grasses by Physical or Chemical Treatment : 2. Effect of wet treatment with sodium hydroxide on chemical composition and dry matter digestibility

DOI JASI Web Site

Bibliographic Information

Other Title
  • 暖地型イネ科牧草の物理・化学処理による栄養価値改善 : 2.水酸化ナトリウム浸漬処理が化学成分及び乾物消化率に及ぼす影響
  • ダンチガタ イネカ ボクソウ ノ ブツリ カガク ショリ ニ ヨル エイヨウ

Search this article

Abstract

To investigate the effect of wet treatment with sodium hydroxide on nutritive value of tropical grasses, mature guineagrass (Panicum maximum JACQ. var. maximum), green panic (Panicum maximum JACQ. var. trichoglume EYLES) and Rhodesgrass (Chloris gayana KUNTH.) were soaked in 0.75 or 1.50% NaOH solution (NaOH/grass: 4.5 or 9.0% in dry weight) at 20℃ for 24hr, and chemical composition and in vitro dry matter (DM) digestibility of the treated samples were compared with those of the untreated samples. In vitro DM digestibility of the samples was measured by incubation with rumen fluid of goats and pepsin. The results obtained were as follows: Acetyl bromide lignin (ABL) content generally tended to decrease with 9.0% treatment however it increased slightly with 4.5% treatment comparing with 4.5% treatment. In vitro DM digestibility tended to increase slightly with 4.5% treatment and showed a significant increase with 9.0% treatment. ABL digestibility tended to increase with treatments and showed a little higher value with 9.0% treatment than with 4.5% treatment. A slight increase in DM digestibility with 4.5% treatment seemed to be caused by the decrease of silica content. The significant increase in DM digestibility with 9.0% treatment was mainly caused by the decrease in contents of ABL and silica and the increase of ABL digestibility. The recovery of DM of all samples decreased with both treatments and showed lower value with 9.0% treatment comparing with 4.5% treatment. The recovery of digestible DM decreased in all eight samples with 4.5% treatment however that of five samples showed no decrease with 9.0% treatment. The result suggested that 9.0% treatment was more effective than 4.5% treatment for improving the nutritive value of mature tropical grasses by wet treatment with sodium hydroxide.

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top