Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Effects of Hermetia Illucens Supplementation on Fecal Score, Blood Profiles, Immune Response and Small Intestinal Morphology in Weaned Pigs

이유자돈 사료 내 동애등에(Hermetia illucens)의 첨가가 분변지수, 혈액성상, 면역반응 및 소장형태에 미치는 영향

  • Choi, Yo-Han (Swine Science Division, National Institute of Animal Science, Rural Development Administration) ;
  • Kim, Jo-Eun (Swine Science Division, National Institute of Animal Science, Rural Development Administration) ;
  • Jung, Hyun-Jung (Swine Science Division, National Institute of Animal Science, Rural Development Administration) ;
  • Cho, Eun Seok (Swine Science Division, National Institute of Animal Science, Rural Development Administration) ;
  • Kim, Dong-Woo (Department of Animal Industry Convergence, College of Animal Life Sciences, Kangwon National University) ;
  • Kim, Jin-Soo (Department of Animal Industry Convergence, College of Animal Life Sciences, Kangwon National University)
  • 최요한 (농진청 국립축산과학원 양돈과) ;
  • 김조은 (농진청 국립축산과학원 양돈과) ;
  • 정현정 (농진청 국립축산과학원 양돈과) ;
  • 조은석 (농진청 국립축산과학원 양돈과) ;
  • 김동우 (강원대학교 동물생명과학대학 동물산업융합학과) ;
  • 김진수 (강원대학교 동물생명과학대학 동물산업융합학과)
  • Received : 2020.01.15
  • Accepted : 2020.04.03
  • Published : 2020.04.29
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Abstract

This study was undertaken to determine the effects of feed supplementation with Hermetia illucens (HI) on the fecal score, blood profiles, immune response, and small intestinal morphology in weaned pigs. A total of 24 weaned pigs (Landrace×Yorkshire×Duroc; 5.86±0.13 kg) were randomly allotted to 4 treatments and 6 replicates on the basis of initial body weight. The experiment was accomplished over 0-14 days. The dietary treatments included a corn-soybean meal diet supplemented with 0, 1, 2, and 3% HI. A linear response to increasing dietary HI was observed for the number of monocytes (p<0.01) and eosinophils (p<0.05), whereas red blood cells tended to decrease with increasing HI levels. Plasma TNF-α levels were also determined to linearly decrease with HI supplementation (p=0.07). Moreover, a linearly decreasing tendency (p=0.06) was observed in the fecal score with increasing dietary levels of HI. Weaned pigs fed diets supplemented with increasing dietary concentrations of HI showed linearly improved (p<0.05) duodenal villus height during the study period. Taken together, these results indicate the beneficial effects of HI on diarrhea reduction, immune response, and small intestinal morphology in weaned pigs.

본 실험은 사료 내 동애등에(HI, Hermetia illucens)의 첨가가 이유자돈의 분변지수, 혈액성상, 면역반응 및 소장형태에 미치는 영향을 구명하기 위해 수행하였다. 본 실험을 위해 총 24두의 이유자돈(Landrace×Yorkshire×Duroc; 5.86±0.13 kg)을 공시하였으며, 개시체중에 기반하여, 4처리 6반복, 반복당 1두씩 완전임의 배치하였다. 실험기간은 0~14일간 진행하였다. 실험 처리구는 옥수수-대두박 기초사료를 대조구로 하여 기초사료 내 HI를 1, 2 및 3% 첨가한 처리구가 포함되었다. 혈액성상에서 사료 내 HI의 첨가수준이 증가함에 따라 혈중 단핵구(p<0.01)와 호산구(p<0.05)가 유의적으로 증가하는 것으로 나타났으며, 적혈구는 선형적으로 감소하는 경향이 관찰되었다(p=0.08). 한편, 면역반응에서 혈 중 TNF-α의 수치는 사료 내 HI의 첨가수준이 증가함에 따라 선형적으로 감소하는 경향이 관찰되었으며(p=0.067), 분변지수 또한 HI의 첨가수준이 증가함에 따라 선형적으로 감소하는 경향이 관찰되었다(p=0.058). 소장형태에서 십이지장의 융모 높이는 HI의 첨가수준이 증가할수록 개선되는 유의적인 효과가 나타났다(p<0.05). 본 실험의 결과들을 종합해 보면, 사료 내 HI 첨가는 이유자돈의 설사저감, 면역반응 및 소장형태에 긍정적인 효과를 미치는 것을 시사한다.

Keywords

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