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The Effect of Formic Acid Additives on Sweetclover Silage Quality

Yang Fu-yu,Zhou He,Han Jian-guo (Institute of Grassland Science, China Agricultural University, Beijing 100094,China)  
The harvested early bloom sweetclover was left to wilt for 0 hour, 8 hour,or 30 hours. The plants contained various amount of dry matter of 27.36%, 38.69%, or 44.98% separately. Each pile was ensiled with formic acid at a rate of 2.5 ml/kg, 4.0 ml/kg and 5.5 ml/kg respectively. Results from the experiments showed that haylage (DM44.98%) added with formic acid decreased its ammonia nitrogen and increased its WSC and CP content.For hay of different percentage of dry matter,the application of formic acid (4.0 ml/kg) exhibited a satisfactory effect on silage fermentation,preferably on hay containing 27.36% dry matter.
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