Effects of Dietary Supplementation of Bacteriophage on Growth Performance, Nutrient Digestibility, Blood Profiles, Carcass Characteristics and Fecal Microflora in Broilers
2013
Kim, S.C., 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 bacteriophage SE supplementation on growth performance, nutrient digestibility, blood profiles, visceral organ weight, meat quality and excreta microflora in broilers. A total of 340 1-d-old ROSS 308 broilers (mixed gender) with an initial average body weight (BW) of 41.71±0.16 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) SE05, CON+0.05% bacteriophage, SE 3) SE10, CON+0.10% bacteriophage SE, and 4) SE15, CON+0.15% bacteriophage SE. During d 15 to 31, broilers fed SE15 diet had a higher (P0.05) body weight gain than broilers fed CON diet. Overall, body weight gain in SE10 and SE15 was greater (P0.05) than that in CON. Apparent total tract nutrient digestibility and blood characteristics did not differ (P0.05) among treatments. The water holding capacity was increased (P0.05) in SE15 compared with CON. Other meat quality in terms of pH value, breast muscle color (L*, a*, b*) and drip loss were unaffected by dietary supplementation with bacteriophage SE. The visceral weight of bursa of Fabricius was increased (P0.05) in broilers fed the bacteriophage SE incorporated diets compared with those fed the CON diet. No difference (P0.05) was observed in visceral weight of liver, spleen, breast muscle, abdominal fat, gizzard and excreta concentrations of Lactobacillus, Clostridium perfringens, Escherichia coli, and Salmonella. In conclusion, dietary supplementation with 0.10 and 0.15% bacteriophage SE could improve the growth performance, breast muscle water holding capacity and bursa of Fabricius visceral weight in broilers.
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