Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Effect of Feeding Cordyceps with Fly Pupa on Growth Performance in Broiler Chickens

브로일러의 성장에 관한 파리번데기 동충하초 급여효과

  • Park, Byung-Sung (Department of Animal Biotechnology, College of Animal Life Science, Kangwon National University)
  • 박병성 (강원대학교 동물생명공학과)
  • Received : 2011.08.05
  • Accepted : 2011.10.31
  • Published : 2011.11.30
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Abstract

This study was carried out to evaluate the effects of the addition of different levels of CFP (Cordyceps with fly pupa) on growth performance in broiler chickens. 400 broiler chicks (Ross 308, 1 day old) were sorted randomly into 4 treatment groups and fed experimental diets for 35 days. The treatment groups were divided into a control group not fed with CFP (T1), and treatment groups fed with CFP 2.0% (T2), CFP 3.5% (T3), and CFP 5.0% (T4). Although the broilers' weight gain and feed efficiency were significantly higher (p<0.05) in the T3 group throughout the entirety of the test period, no statistically significant differences were noted among the T1 and T2, T4 groups. Triglyceride in the blood, total cholesterol, and LDL-C were significantly lower in the CFP treatment groups than in the control group (p<0.05). The blood lipid reduction rate ranged from 5.32 to 10.63% for triglycerides, from 9.23 to 12.62% for total cholesterol, and from 44.67 to 53.81% for LDL-C in the CFP treatment groups relative to the control group. The abdominal fat weight ratio was reduced significantly in the CFP treatment groups (p<0.05) compared with the control group, with a reduction rate range of 17.67-21.68%. Broiler carcass weight, carcass rate, and ratios of breast muscle, skin and thigh muscle weights to carcass weight were significantly higher in the T3 group, and statistically significant differences were noted among the T1 and T2, T4 groups (p<0.05). Enteropathogenic E.coli and Salmonella were lower in the CFP treatment groups than in the control group, whereas the beneficial bacteria Bifidobacteria were significantly higher in the CFP treatment groups than in the control group (p<0.05). These findings suggest that the Cordyceps with fly pupa can improve the carcass characteristics and body weight gain in broiler chickens.

본 연구는 파리번데기 동충하초(Cordyceps with fly pupa, CFP)의 급여가 브로일러의 성장능력에 미치는 영향을 조사하기 위하여 수행하였다. 부화 1일령 육계(Ross 308) 400수를 이용하여 4개의 처리구로 완전임의배치 한 후 35일 동안 사육하였다. 처리구는 T1 (CFP를 첨가하지 않은 무첨가 대조구), T2 (CFP 2.0% 첨가구), T3 (CFP 3.5% 첨가구) 및 T4 (CFP 5.0% 첨가구)로 구분하였다. 시험 전 기간 동안 브로일러의 증체량 및 사료효율은 T3가 유의하게 가장 높았으나(p<0.05) T1과 T2, T4 사이의 통계적인 유의차는 나타나지 않았다. 혈액 중성지방, 총 콜레스테롤 및 LDL.C 함량은 CFP 첨가구가 대조구에 비해서 유의하게 낮았다(p<0.05). 혈액 지질의 감소율 범위는 대조구와 비교할 때 CFP 첨가구에서 중성지방 5.32-10.63%, 총콜레스테롤 9.23-12.62%, LDL.C 44.67-53.81%로 나타났다. 복강지방 무게비율은 CFP 첨가구가 대조구와 비교할 때 유의하게 감소하였으며(p<0.05) 복강지방의 감소율 범위는 17.67-21.68%로 나타났다. 브로일러의 도체중, 도체율 및 도체중에 대한 가슴살과 피부를 포함한 다리살의 무게는 T3가 유의하게 가장 높았으며 T1과 T2, T4 사이의 통계적인 유의차가 인정되었다(p<0.05). 장 내 유해균인 E. coli, Salmonella는 CFP 첨가구가 대조구에 비해서 낮았으나 유익한 균인 Bifidobacteria는 CFP 첨가구가 대조구에 비해서 유의하게 높았다(p<0.05). 본 결과는 파리번데기 동충하초가 브로일러의 증체량 및 도체특성을 개선시킬 수 있음을 시사해준다.

Keywords

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