Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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Effects of Dietary Supplementation of Bacteriophage CP on Growth Performance, Nutrient Digestibility, Blood Profiles, Carcass Characteristics and Fecal Microflora in Broilers

육계 사료 내 박테리오파지 CP의 첨가가 생산성, 영양소 소화율, 혈액특성, 도체특성 및 분내 미생물 조성에 미치는 영향

  • Baek, Hee Yeob (Department of Animal Resource and Science, Dankook University) ;
  • Kim, Jae Won (BIO Business Unit, CJ Cheil Jedang Corp.) ;
  • Kim, Jung Un (BIO Business Unit, CJ Cheil Jedang Corp.) ;
  • Kim, In Ho (Department of Animal Resource and Science, Dankook University)
  • 백희엽 (단국대학교 동물자원학과) ;
  • 김재원 (CJ제일제당 바이오사업부) ;
  • 김정언 (CJ제일제당 바이오사업부) ;
  • 김인호 (단국대학교 동물자원학과)
  • Received : 2013.09.10
  • Accepted : 2013.11.27
  • Published : 2013.12.30
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Abstract

This experiment was conducted to investigate the effects of dietary bacteriophage CP supplementation on growth performance, nutrient digestibility, blood profiles, visceral organ weight, meat quality and fecal microflora in broilers. A total of 340 1-d-old ROSS 308 broilers (mixed gender) with an initial average body weight (BW) of $41.14{\pm}0.17g$ were randomly allotted to 4 treatments with 5 replicate pens per treatment and 17 broilers per pen for 31 days. Dietary treatments were: 1) CON, control diet, 2) CP05, CON + 0.05% bacteriophage CP, 3) CP10, CON + 0.10% bacteriophage CP and 4) CP15, CON + 0.15% bacteriophage CP. During d 15 to d 31, broilers fed CP15 diet had higher (P<0.05) body weight gain and feed intake than broilers fed CON diet. Overall, body weight gain in CP10 and CP15 treatment groups was greater (P<0.05) than that in CON treatment and feed intake was higher (P<0.05) in CP15 treatment than that in CON. Apparent total tract nutrient digestibility and blood characteristics did not differ (P>0.05) among treatments. The water holding capacity of breast meat increased (P<0.05) in broiler fed the diets containing bacteriophage CP compared with those fed the CON diet. Other meat characteristics such as pH value, breast muscle color ($L^*$, $a^*$, $b^*$) and drip loss were unaffected by dietary supplementation of bacteriophage CP. The weight of bursa of Fabricius increased (P<0.05) in CP05 when compared with CON. No significant difference was observed (P>0.05) among treatments in visceral weight and fecal microflora concentrations of Lactobacillus spp., Clostridium perfringens, Escherichia coli and Salmonella spp. In conclusion, dietary supplementation with 0.10 and 0.15% bacteriophage CP could improve the growth performance.

본 연구는 박테리오파지의 급여가 육계의 생산성, 영양소 소화율, 혈액 특성, 장기무게 및 분내 미생물 조성에 미치는 영향을 알아보기 위해 시험을 실시하였다. 사양 시험은 1일령 ROSS 308(♂, ♀) 340수 공시하였고, 시험 개시 체중은 $41.14{\pm}0.17g$으로 31일간 실시하였다. 시험 설계는 1) CON(basal diet), 2) CP05(CON + bacteriophage CP 0.05%), 3)CP10(CON + bacteriophage CP 0.10%), 4) CP15(CON + bacteriophage CP 0.15%)로 4개 처리를 하여 처리당 5반복, 반복당 17수씩 완전 임의 배치하였다. 1~14일령의 생산성에 있어서는 처리구 간 유의적 차이가 없었다. 그러나 15~31일령에 있어서는 증체량 및 사료 섭취량에서 CP15 처리구가 CON 처리구보다 높게 나타났고, 전체 시험 기간 동안의 증체량에 있어서도 CP10 및 CP15 처리구가 CON 처리구보다 유의적으로 높게 나타났다. 영양소 소화율 및 혈액 특성에 있어서 처리구 간 차이를 나타내지 않았다. 도체 특성 중 가슴육의 보수력 있어서 박테리오파지를 첨가한 처리구가 CON 처리구보다 유의적으로 높게 나타났고, 장기 무게 중 F낭의 무게에 있어 CP05 처리구가 CON 처리구에 비해 유의적으로 높게 나타났다. 분내 미생물 조성에 있어서는 처리구간 유의적 차이를 나타내지 않았다. 결론적으로, 육계 사료 내박테리오파지를 첨가 시 증체량을 향상시키고, F낭의 무게를 증가시키며, 가슴육의 보수력이 증가하는 효과를 나타내었다.

Keywords

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