Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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Effect of Diet Supplementation with Pine Cone Extracts on Growth Performance, Digestive Organ Characteristics and Cecal Microbiota of Semi-broiler

잣송이 추출물의 급여가 세미브로일러의 생산성, 소화기관 특성 및 장내 미생물에 미치는 영향

  • Pak, Jae In (Department of Animal Life Science, College of Animal Life Sciences, Kangwon National University) ;
  • Mun, Che-Bin (Department of Animal Life Science, College of Animal Life Sciences, Kangwon National University) ;
  • Kang, Sun Moon (Animal Products Utilization Division, National Institute of Animal Science, Rural Development Administration)
  • 박재인 (강원대학교 동물생명과학과) ;
  • 문제빈 (강원대학교 동물생명과학과) ;
  • 강선문 (농촌진흥청 국립축산과학원 축산물이용과)
  • Received : 2019.11.22
  • Accepted : 2019.12.23
  • Published : 2019.12.31
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Abstract

This study investigated the effect of diet supplementation with pine cone extracts (pine cone ethanol extract: PCEE; pine cone ethanol-hexane extract: PCEHE) on growth performance, digestive organ characteristics and intestinal microbiota of semi-broiler. Twenty two-weeks-old semi-broilers were divided into four dietary groups (n=5/group; control(-): no antibiotics and pine cone extracts; control(+): 2% antibiotics [20 g/kg basal diet]; PCEE: 2% PCEE [20 g/kg basal diet]; PCEHE: 2% PCEHE [20 g/kg basal diet]). Chicks were reared and their diets were supplemented accordingly for 16 days. Final weight, weight gain and feed intake were lowest (P<0.05) in semi-broilers whose diet was supplemented with pine cone extracts, but both PCEE and PCEHE groups showed lower (P<0.05) feed conversion ratios compared to the control(-) group. Gizzard and small intestinal weight were also lower (P<0.05) in both PCEE and PCEHE groups than in the control(-) group. Intestinal length and villus height were similar for all treatments. Furthermore, cecal microbiota was not improved by PCEE and PCEHE supplementation. These findings suggest that diet supplementation with pine cone extracts improves the feed conversion ratio and affects the digestive organ weight of semi-broilers.

본 연구는 잣송이 추출물의 급여가 세미브로일러의 생산성, 소화기관 특성 및 장내 미생물에 미치는 영향을 구명하고자 실시하였다. 2주령 세미브로일러 20수를 급여 사료에 따라 4처리구(n=5/처리구; 대조구(-)[항생제 및 잣송이 추출물 무급여구], 대조구(+)[2% 항생제 급여구: 20 g/kg 기초사료], 2% 잣송이 ethanol 추출물 급여구[20 g/kg 기초사료] 및 2% 잣송이 ethanol-hexane 추출물 급여구[20 g/kg 기초사료])로 나누어 16일간 공시하였다. 종료 체중, 증체량 및 사료섭취량은 잣송이 ethanol 및 ethanol-hexane 추출물 급여구가 가장 낮았으나(P<0.05), 사료요구율은 잣송이 추출물 급여구들이 대조구(-)보다 낮았다(P<0.05). 근위 및 소장 무게는 잣송이 추출물 급여구들이 대조구(-)보다 낮았다(P<0.05). 소장 및 융모의 길이는 대조구와 잣송이 추출물 급여구들간에 큰 차이를 보이지 않았다. 장내 미생물 균총은 잣송이 추출물의 급여에 의해 개선되지 않았다. 따라서 잣송이 추출물의 급여는 세미브로일러의 사료요구율을 향상시켰으며, 소화기관의 무게에 영향을 미쳤다.

Keywords

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