Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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A Case Study on Facilitating the Decomposition of Poultry Manure using Insect Larvae(2)

곤충에 의한 계분의 분해 특성평가에 대한 연구(2)

  • Woo-Whan, Jang (Department of Food and Resource Economics, Kyungpook National University) ;
  • Sang-Chul, Mun (Cheongdo High School) ;
  • In-Hag, Choi (Division of Companion Animal Science, Joongbu University)
  • Received : 2022.10.04
  • Accepted : 2022.11.08
  • Published : 2022.11.30
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Abstract

This study was conducted to evaluate the structure and composition (i.e., pH, moisture, total-N, pathogens, and volatile fatty acids) of broiler and duck manure treated with larvae of three insect larvae, namely, Tenebrio molitor, Protaetia brevitarsis seulensis, and Ptecticus tenebrifer. Hatched Tenebrio molitor (n=300), Protaetia brevitarsis seulensis (n=60), and Ptecticus tenebrifer (n=300) were used in this study; specially, the larvae were divided into six treatments with three replicates. The treatments were as follows: T1: 110 g broiler manure + Tenebrio molitor larvae (n=50), T2: 110 g duck manure + Tenebrio molitor larvae (n=50), T3: 125 g broiler manure + Protaetia brevitarsis seulensis larvae (n=10), T4: 125 g duck manure + Protaetia brevitarsis seulensis larvae (n=10), T5: 105 g broiler manure + Ptecticus tenebrifer larvae (n=50), and T6: 105 g duck manure + Ptecticus tenebrifer larvae (n=50). For all the larval treatments, the following results were observed: The moisture content of the duck manure treat with three insect larvae was higher than that of the broiler manure (p<0.05), whereas broiler manure had a higher pH (p<0.05). In addition, the total nitrogen content of broiler manure was higher than that of duck manure (p<0.05). However, the insect larvae did not significantly affect pathogens (E.coli and Salmonella) and the volatile fatty acids (p>0.05). In conclusion, the use of the three insect larvae to create organic nitrogen compost using poultry manure is feasible.

Keywords

Acknowledgement

본 연구는 경상북도 교육청 "2020년 제16회 미래과학자양성프로그램 운영 계획" 연구사업의 지원에 이루어진 것입니다.

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