Increased total nitrogen content of poultry manure by decreasing water content through composting processes(Fertilizers and soil amendments)

スポンサーリンク

概要

• 論文の詳細を見る

• Microbial mineralization of urea and uric acid in poultry litter can lead to loss of nitrogen (N) content and its value as a fertilizer. To minimize the loss of N in the composting processes, controlling the water content in litters is a key to reduce the mineralization processes of N compounds. The N content of litter may be influenced by diets, hen age and the type of poultry houses used. The objectives of the present study were i) to determine the relationship between the water content and the decomposition rate of uric acid in poultry litter and ii) to investigate the effect of hen age and crude protein (CP) percentages in diets on the N content of poultry litter. A layer feeding trial was conducted in two poultry farms with windowless and open-floor houses. An incubation study of poultry litter was performed under different levels of water content. Our study found that the diet CP percentage (16.5-18%) and the growth stage of laying hens did not have a significant effect on the amount of total N (52-56g kg^<-1>) and uric acid-N (26-31g kg^<-1>) in fresh litters. At the 7^<th> day of litter incubation study, the concentration of uric acid-N was 22g kg^<-1> in litters with a water content of 35%, whereas it further decreased to less than 1.3g kg^<-1> in litters with a water content of 55% and higher levels. The decomposition rate of uric acid-N in litter was 0.3-3.1g kg^<-1>day^<-1> in the windowless house and 3.1-7.1g kg^<-1>day^<-1> in the open-floor house. Decomposition of uric acid in litters was positively correlated to the litter moisture content that is controlled to be lower in windowless houses (40-50%) than in open-floor houses (55-80%) during the composting period. Our study suggests that the use of windowless houses for layer chicken production is effective for producing poultry manure with a high N content.

著者

• Hara Masayuki

  Mie Prefecture Agricultural Research Institute

• Kondo Takuya

  Suzuka Poultry Co. Inc.

• Murakami Keiichi

  Mie Prefecture Agricultural Research Institute:mie Prefecture Department Of Agriculture Fisheries Co

• Murakami Keiichi

  Mie Prefecture Agricultural Res. Inst. Jpn

• Hashimoto Yohei

  Department Of Bioresource Science Mie University

関連論文

• Applicability of near infrared spectroscopy as an alternative to acid detergent analysis for cattle and swine manure compost(Fertilizers and Soil Amendments)
• Potential of near infrared spectroscopy to determine the lipid content of untreated garbage compost(Fertilizers and Soil Amendments)
• PHARMACOLOGICAL CHARACTERISTICS OF ABNORMAL BEHAVIOR INDUCED BY HARMINE WITH SPECIAL REFERENCE TO TREMOR IN MICE
• Reclamation of Saline Soil in Northeastern Thailand Using a Solar-Powered Pump to Control Groundwater Levels
• Amelioration of Autotoxic Soil Constraints to Lettuce and Mat-rush Growths by Activated Charcoals
• Electron Injection and Transport Properties of Phenazine Compounds with Fused Rings
• Effect of high molecular weight carbohydrates on bud cell formation by Fusarium oxysporum in potato dextrose broth
• Effect of inorganic ions on bud cell formation by Fusarium oxysporum in potato dextrose broth
• Increased total nitrogen content of poultry manure by decreasing water content through composting processes(Fertilizers and soil amendments)

スポンサーリンク