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2026 Vol.68, Issue 5 Preview Page
Correlation Analysis of Environmental and Growth Factors Affecting Pig Manure Calorific Value in Smart Livestock Housing

돈분열량 지표를 활용한 스마트축사 환경 및 생육 요인 상관성 분석 연구

Hyo-Jae Seoa
,
Jin-A Parkb
,
Jin-Won Parkc
,
Il-Hwan Seod†
서 효재a
,
박 진아b
,
박 진원c
,
서 일환d†
aPostdoctoral Researcher, Dept. of Agricultural Engineering, Jeonbuk National University
bPh.D. Student, Dept. of Agricultural Engineering, Jeonbuk National University
cM.S. Graduate, Dept. of Agricultural Engineering, Jeonbuk National University
dProfessor, Dept. of Agricultural Engineering, Jeonbuk National University
† Corresponding author Tel.: +82-63-270-2520, Fax: +82-63-270-2517 E-mail: ihseo@jbnu.ac.kr
30 September 2026. pp. 49-57
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Abstract

Enhancing productivity in the livestock industry remains a critical challenge, necessitating precise management and optimization of the internal environment within livestock facilities. Effective environmental control requires the analysis of both environmental and physiological data from the animals. In this study, an experimental environmentally controlled chamber equipped with environmental and biological monitoring systems was utilized to analyze the relationships between pig body weight, feed intake, water intake, and manure calorific value, alongside environmental parameters such as temperature and humidity. Correlation analysis revealed a significant positive relationship between pig manure calorific value and body weight (r = 0.741, p < 0.01), as well as between body weight and feed intake (r = 0.647, p < 0.01). The pig manure calorific value increased approximately 5.2-fold from the weaning piglet stage (384 kcal/kg DM) to the early finishing stage (approximately 71 kg body weight; 2,000 kcal/kg DM), primarily reflecting stage-specific changes in diet composition and feed intake rather than a decline in apparent total tract digestibility with growth. Because the experiment was conducted under stable winter conditions (internal temperature: 21.9 ± 2.3°C, relative humidity: 35.3%) with limited environmental variability, no significant correlation was observed between pig manure calorific value and internal temperature (r = 0.114, p > 0.05). Therefore, in this study the pig manure calorific value is positioned primarily as an indicator for stage-specific feeding management rather than as a real-time feedback variable for environmental control. The results provide fundamental analytical data that can support stage-specific feeding strategies and energy-efficient management in smart livestock housing operations.

Keywords
Pig house monitoring
pig manure calorific value
precision feeding
smart livestock
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Information
  • Publisher :The Korean Society of Agricultural Engineers
  • Publisher(Ko) :한국농공학회
  • Journal Title :Journal of Korean Society of Agricultural Engineers
  • Journal Title(Ko) :한국농공학회논문집
  • Volume : 68
  • No :5
  • Pages :49-57
  • Received Date : 2026-04-08
  • Revised Date : 2026-06-02
  • Accepted Date : 2026-06-08
  • DOI :https://doi.org/10.5389/KSAE.2026.68.5.049
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