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2024 Vol.26, Issue 2 Preview Page

Research article

The effect of feeding a mixed feed additives on greenhouse gases emissions from slurry pits

4종 혼합 사료첨가제 사용이 슬러리피트 내 온실가스 발생에 미치는 영향

Jumi Lee1
,
Dongyeo Kim1
,
Seunghun Lee2
,
Riuh Wardhani3
,
Jinho Shin3
,
Heekwon Ahn4*
이 주미1
,
김 동여1
,
이 승훈2
,
Wardhani Riuh3
,
신 진호3
,
안 희권4*
1Master’s Course, Dept. of Livestock Environmental Science & Technology, Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea
2Rearch Professor, Institute of Agricultural Science, Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea
3Docter’s Course, Dept. of Dairy Science, Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea
4Professor, Division of Animal and Dairy Science,Chungnam Nationla University, 99, Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea
1충남대학교 축산환경학과 석사과정
2충남대학교 농업과학연구소 연구교수
3충남대학교 낙농학과 박사과정
4충남대학교 동물자원과학부 교수
*Corresponding Author
30 August 2024. pp. 87-96
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Abstract

This study evaluated the impact of a feed additive mixture (comprising benzoic acid, saponin, prebiotics, and minerals at 0.5%) on greenhouse gas emissions during pig manure storage in laboratory-scale slurry pits. Compared to the control, the group fed with additives exhibited a higher average CO2 emission rate (51.7±22.9 g/day/m3-slurry vs. 29.4±2.9 g/day/m3-slurry), though this difference was not statistically significant (p>0.05). However, the CO2 emission reduction rate over time was steeper with the additive. For CH4, the average emission rate was 1.5±0.9 kg/day/m3-slurry with the additive and 1.0±0.4 kg/day/m3-slurry in the control, with no significant difference (p>0.05). While the additive group initially produced more CH4, this trend reversed later in the experiment. These findings suggest that the potential of feed additives to reduce CO2 and CH4 emissions may become more apparent over longer experimental periods. In contrast, N2O emissions were significantly lower with the additive (6.2±2.5 mg/day/m3-slurry) compared to the control (36.0±15.1 mg/day/m3-slurry), representing an approximately 81.7% reduction (p<0.05). This effect was most pronounced during the early stages of manure storage. Consequently, feed additives effectively mitigate N2O emissions early in the storage process. Given the relatively short study duration of 55 days, further research is warranted to assess greenhouse gas emissions over extended periods of pig manure storage.

Keywords
Feed additive
Carbon dioxide
Methane
Nitrous oxide
Greenhouse gases
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Information
  • Publisher :The Korean Society of Animal Environmental Science & Technology
  • Publisher(Ko) :(사)한국축산환경학회
  • Journal Title :Journal of Animal Environmental Science
  • Journal Title(Ko) :축산시설환경학회지
  • Volume : 26
  • No :2
  • Pages :87-96
  • Received Date : 2024-08-19
  • Revised Date : 2024-08-26
  • Accepted Date : 2024-08-27
  • DOI :https://doi.org/10.11109/JAES.2024.26.2.087
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