Effect of CALSPORIN® on growth performance, nutrients digestibility, organ weight, meat quality and excreta and intestinal microflora and slurry noxious gas emission in broiler chickens

Tuesday, July 22, 2014
Exhibit Hall AB (Kansas City Convention Center)
Heeyeob Beak , Department of Animal Science, Dankook University, Cheonan, South Korea
Han lin Li , Department of Animal Science, Dankook University, Cheonan, South Korea
In-Ho Kim , Department of Animal Science, Dankook University, Cheonan, South Korea
Abstract Text:

This study was conducted to determine the effect of dietary CALSPORIN® supplementation on growth performance, nutrient digestibility, relative organ weight, meat quality, intestinal microbial flora, and slurry noxious gas emissions in broilers. A total of 816 1d-old male ROSS 308 broilers (BW of 46.06 g ± 0.67 g; 16 pens/treatment and 17 broilers/pen) were used in a 5-wk study. Broilers were randomly allotted to 1 of 3 dietary treatments and CALSPORIN® BBS, which contains 1 × 109 CFU/g Bacillus subtilis C-3102.: T1) CON, basal diet, T2) CON + 300 ppm CALSPORIN® (3 × 105 CFU/g), and T3) CON + 600 ppm CALSPORIN® (6 × 105 CFU/g) . The T3 enhanced  BW gain (BWG) (700 vs. 658 g; P<0.05) compared with the CON treatment during the d 8-21. During d 22 to 35, T3 showed greater BWG (843 vs. 801 g; Linear, P<0.05) and better feed conversion ratio (FCR) (1.665 vs. 1.792; Linear, P<0.05) than those in CON. The FCR (1.686 vs. 1.792; Linear, P<0.05) in T2 was linearly improved compared with CON. In the overall period, the BWG (1,630, 1,662 vs. 1,573 g; P<0.05) and the FCR (1.544, 1.534 vs. 1.624; P<0.05) in T2 and T3 were higher than the control. The apparent total tract digestibility (ATTD) of dry matter (DM) (73.43 vs. 76.54, 77.20%; P<0.05) and energy was linearly increased (75.34 vs. 78.83, 79.87%; P<0.05) by CALSPORIN® inclusion in the diet. Slurry NH3 emissions were linearly reduced (9.9 vs. 8.2, 7.8 ppm; P<0.05) by dietary supplementation of CALSPORIN®. The Lactobacillus counts in cecum and ileal were linearly (6.256.597.16 log10cfu/g; P<0.05) increased by CALSPORIN® inclusion in the diet. Dietary supplementation of CALSPORIN® linearly reduced E. coli counts in cecum (6.125.74, 5.43 log10cfu/g; P<0.05) Cl. Perfringens counts in large intestine (3.14, 2.97, 2.86 log10cfu/g; P<0.05) and excreta (3.31, 3.17, 3.03 log10cfu/g; P<0.05), and Salmonella counts in cecum (2.66, 2.23, 2.13 log10cfu/g; P<0.05), ileal (2.87, 2.58, 2.42 log10cfu/g; P<0.05), large intestine (3.04, 2.59, 2.44 log10cfu/g; P<0.05) and excreta (2.88, 2.76, 2.61 log10cfu/g; P<0.05). In conclusion, results indicate that CALSPORIN® inclusion can improve BWG and FCR, increase cecum Lactobacillus counts and reduce intestinal E. coli, Cl. Perfringens and Salmonella counts, especially at 6 × 105CFU/g.

Keywords: growth performance, probiotics, fecal microbial, broilers