The livestock manure is being recycled using various technologies such as composting, bio-gasification, and solid fuel. The various characteristics of the feedstock are very important to develop biomass recycling technology. However, the information is not enough about livestock manure in South Korea. This study was conducted to investigate the chemical characteristics of bedded pack barn cattle manure according to various conditions. The moisture and total solids contents were shown as 71.8 and 28.5% in the bedded pack barn cattle manure (CM), respectively. As the retention time of beef (BCM) and dairy cattle manure (DCM) in the bedded pack barn increases, the volatile solids content got close to 84.2 ± 2.5% on a dry basis. (P < 0.05). The C/N ratio decreased quadratically until 90 days in the BCM and DCM (P < 0.05). The particle size distribution of 0.25 to < 3.25 mm accounted for 91.9% of the total particles. In the methane yield prediction model, the model with the lignin component showed the greatest correlation coefficient (R²). Comprehensively, the chemical characteristics of the CM based on its retention time and particle size distribution might be useful as the basic data in various biomass recycling techniques.

牲畜粪便通过堆肥，生物气化和固体燃料等各种技术进行回收。原料的各种特性对于开发生物质循环技术非常重要。然而，关于韩国牲畜粪便的信息还不够。进行了这项研究，以调查各种条件下的袋装谷仓牛粪的化学特性。层状包装的谷仓牛粪肥（CM）的水分和总固体含量分别为71.8和28.5％。随着牛肉（BCM）和奶牛粪便（DCM）在层状包装谷仓中的保留时间增加，干物质中的挥发性固体含量接近84.2±2.5％。（P  <0.05）。在BCM和DCM中，C / N比呈二次下降直到90天（P  <0.05）。0.25至<3.25 mm的粒度分布占总颗粒的91.9％。在甲烷产量预测模型中，具有木质素成分的模型显示最大相关系数（R ²）。综上所述，基于CM的保留时间和粒径分布的CM的化学特性可能可用作各种生物质回收技术的基础数据。