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Evaluation of Optimum Moisture Content for Composting of Beef Manure and Bedding Material Mixtures Using Oxygen Uptake Measurement 원문보기

Asian-Australasian journal of animal sciences, v.29 no.5, 2016년, pp.753 - 758  

Kim, Eunjong (Department of Animal Biosystems Science, Chungnam National University) ,  Lee, Dong-Hyun (Animal Environment Division, National Institute of Animal Science) ,  Won, Seunggun (Department of Animal Resources, College of Life & Environmental Sciences, Daegu University) ,  Ahn, Heekwon (Department of Animal Biosystems Science, Chungnam National University)

Abstract ▼ AI-Helper 아이콘AI-Helper

Moisture content influences physiological characteristics of microbes and physical structure of solid matrices during composting of animal manure. If moisture content is maintained at a proper level, aerobic microorganisms show more active oxygen consumption during composting due to increased microb...

주제어

#Moisture Content   #Beef Manure   #Bedding Material   #Oxygen Uptake Rate   #Water Holding Capacity  

AI 본문요약
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제안 방법

  • WHC is the more definite indicator than aforementioned simple moisture content to describe optimum moisture content of diverse composting materials. This study thus determined optimum moisture content by testing respiration rate at different controlled moisture levels based on WHC.
  • Although DRT is a more realistic method to represent respiration activity during composting process, it is not easy to measure airflow and O2 contents of introduced and exhausted air accurately. Thus, in this study, SRT method was selected in order to increase oxygen uptake measurement accuracy and test many samples at once.

대상 데이터

  • Bedding material (sawdust or rice hull) and beef cattle manure mixtures were collected from a bedded pack barn in Korean National Institute of Animal Science beef farms. About 3 months after placing fresh bedding material on the floor, all mixtures of bedding and beef manure were removed from barn.

이론/모형

  • WHC was measured by a modified Hilgard method (Mabuhay et al., 2003; Ahn et al., 2008b). A wet sample with known moisture content was weighed (Wi: g, wb) and soaked in the water for 1 day.
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