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Effect of fermented earthworm cast feed on the production of high-quality chicken meat

지렁이 분변토 발효사료가 고품질 닭고기 생산에 미치는 영향

  • Goh, Yong-Gyun (College of Animal Life Science, Kangwon National University) ;
  • Kim, Jin-Soo (College of Animal Life Science, Kangwon National University) ;
  • Park, Byung-Sung (College of Animal Life Science, Kangwon National University)
  • 고용균 (강원대학교 동물생명과학대학) ;
  • 김진수 (강원대학교 동물생명과학대학) ;
  • 박병성 (강원대학교 동물생명과학대학)
  • Received : 2017.10.16
  • Accepted : 2017.11.12
  • Published : 2017.12.30

Abstract

The present study was undertaken to investigate the effect of fermented earthworm cast feed prepared by using three probiotic mixture with Bacillus subtilis strain on meat quality and growth performance of broiler chickens. A total of 240 one-day-old broiler chickens were randomly assigned to four treatments: 1) control, 2) 0.2% commercial product contain strain of Lactobacillus fermentum (CP), 3) 0.3% fermented earthworm cast feed (FECF3); and 4) 0.5% fermented earthworm cast feed (FECF5). Mean body weight gain, thymus, spleen, and F-bursal weight of birds fed with FECF were higher than those of birds fed with control or CP. Serum IgG levels were higher in birds fed with FECF than those in birds fed with CP or control. Cecal Lactobacillus counts were higher whereas Escherichia, Salmonella, Coliform bacteria, and total aerobic bacteria counts were lower in FECF groups than those in CP or control group. Water holding capacities in FECF groups were higher than those in CP or control group. Ratios of n-6/n-3 in chicken meat were lower in FECF groups compared to those in CP or control group.

본 연구는 Bacillus subtilis를 포함하는 3개의 균주를 지렁이 분변토에 접종하여 제조한 생균제인 분변토 발효사료가 육계의 사양성적 및 닭고기 품질에 미치는 영향을 조사하기 위하여 수행하였다. 육계 240마리를 4개의 처리구로 완전임의 배치하였다. 실험 처리구는 대조구, Lactobacillus fermentum으로 제조된 상업용 생균제 (CP) 0.2%, 분변토 발효사료 0.3% (FECF3), 분변토 발효사료 0.5% (FECF5)로 구분하였다. 평균 체중 증가량, 흉선, 비장, F낭의 무게는 대조구, CP 처리구와 비교할 때 FECF 처리구가 높았다. 혈액 IgG 함량은 대조구, CP 처리구와 비교할 때 FECF 처리구가 증가하였다. 맹장 Lactobacillus는 대조구, CP 처리구와 비교할 때 FECF 처리구가 높았으나 Escherichia, Salmonella, Coliform bacteria 및 total aerobic bacteria는 FECF 처리구가 낮았다. 닭고기의 보수력은 대조구, CP 처리구와 비교할 때 FECF 처리구가 높았다. 닭고기 n-6/n-3 지방산의 비율은 대조구, CP 처리구와 비교할 때 FECF 처리구가 낮게 나타났다.

Keywords

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