The Effect of Cutting Stage and Additives on the Quality of Tropical and Subtropical Grass Silage

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  • 暖地型牧草サイレージの品質に及ぼす材料草の生育段階および添加物の影響
  • ダンチガタ ボクソウ サイレージ ノ ヒンシツ ニ オヨボス ザイリョウ ソウ

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Abstract

1. Chemical quality, in vitro dry matter digestibility (IVDMD) and palatability by goats were determined for Rhodesgrass and green panic ensiled with and without 5% glucose or 0.5% formic acid at two growth stages of internode elongation and heading using two liter volume polyethylene bottles. 2. The quality of silage made without additive at internode elongation stage was superior in green panic to in Rhodesgrass, while at heading stage, it was in Rhodesgrass. The materials ensiled at heading stage resulted in lower quality. 3. No large effect of formic acid was found, although the silage with the additive cut at internode elongation stage was superior in quality to at the heading stage. The best quality silage was produced by the addition of glucose at both growth stages. 4. Significant correlation, but not high, was observed between IVDMD of silage and score of silages evaluated by the FLIEG's appraisal method. The palatability of silage made with glucose was the highest and generally the higher quality of silage (FLIEG's score) gave the higher palatability.

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