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


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.


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