Effects of Dietary Supplementation of Bacteriophage CP on Growth Performance, Nutrient Digestibility, Blood Profiles, Carcass Characteristics and Fecal Microflora in Broilers
2013
Baek, H.Y., Dankook University, Cheonan, Republic of Korea | Kim, J.W., CJ Cheil Jedang Corp., Seoul, Republic of Korea | Kim, J.U., CJ Cheil Jedang Corp., Seoul, Republic of Korea | Kim, I.H., Dankook University, Cheonan, Republic of Korea
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 ± 0.17 g 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 (P0.05) body weight gain and feed intake than broilers fed CON diet. Overall, body weight gain in CP10 and CP15 treatment groups was greater (P0.05) than that in CON treatment and feed intake was higher (P0.05) in CP15 treatment than that in CON. Apparent total tract nutrient digestibility and blood characteristics did not differ (P0.05) among treatments. The water holding capacity of breast meat increased (P0.05) 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 (P0.05) in CP05 when compared with CON. No significant difference was observed (P0.05) 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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