Animal Science College, Zhejiang University, Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou 310029, China.
Poult Sci. 2010 Mar;89(3):588-93. doi: 10.3382/ps.2009-00319.
The effect of Bacillus coagulans ZJU0616 with different concentrations supplemented as probiotic was evaluated on growth performance, feed conversion ratio, survival rate, breast chemical composition, and meat quality of Guangxi Yellow chicken. Birds were randomly segregated into 12 groups so that 3 replicates were available for each of the 3 treatments (T-1, T-2, and T-3) and control groups. The control groups were fed a basal diet without any probiotic and other groups were fed the diets that consisted of 3 probiotic levels at initial concentrations of 1.0 x 10(6) cfu.g(-1) (T-1), 2.0 x 10(6) cfu.g(-1) (T-2), and 5.0 x 10(6) cfu.g(-1) (T-3). The lowest final weight and daily weight gain were found in control groups (P < 0.05) and there were no significant differences among probiotic-treated groups. Significantly lower feed conversion ratio and higher survival rate were observed in T-2 and T-3 than that of the control. There were no significant differences (P > 0.05) in contents of breast chemical composition including moisture, CP, crude fat, and crude ash among all groups. For the meat quality parameter assays, the pH, shear force, and drip loss were used as indicators. As for pH values of breasts, no significant difference was found across all treatments. Higher shear force was observed (P < 0.05) in T-2 compared with T-1 and the control. Similar significant difference was also observed in T-1 compared with the control. However, there was no significant difference in shear force between T-3 and the other probiotic treatment groups (T-1 and T-2). As for probiotic-treated groups, there was significant difference (P < 0.05) in breast drip loss compared with that of the control (6.22 +/- 0.18%), with the lowest drip loss found in T-3 (5.38 +/- 0.25%). However, no significant difference was observed in drip loss between T-2 and T-3.
不同浓度凝结芽孢杆菌 ZJU0616 作为益生菌对广西黄鸡生长性能、饲料转化率、成活率、胸肌化学成分和肉质的影响。将鸡随机分为 12 组，每组 3 个重复，共 3 个处理组（T-1、T-2 和 T-3）和对照组。对照组饲喂基础日粮，不添加任何益生菌，其他组饲喂初始浓度分别为 1.0×10(6)cfu.g(-1)（T-1）、2.0×10(6)cfu.g(-1)（T-2）和 5.0×10(6)cfu.g(-1)（T-3）的 3 种益生菌水平的日粮。对照组的最终体重和日增重最低（P＜0.05），益生菌处理组之间无显著差异。T-2 和 T-3 的饲料转化率显著低于对照组，成活率显著高于对照组。各组胸肌化学成分含量（水分、CP、粗脂肪和粗灰分）无显著差异（P＞0.05）。肉质参数测定中，pH 值、剪切力和滴水损失作为指标。各组胸肌 pH 值无显著差异。T-2 的剪切力显著高于 T-1 和对照组（P＜0.05）。T-1 与对照组也存在显著差异。然而，T-3 与其他益生菌处理组（T-1 和 T-2）之间的剪切力无显著差异。对于益生菌处理组，与对照组（6.22±0.18%）相比，胸肌滴水损失显著降低（P＜0.05），T-3 的滴水损失最低（5.38±0.25%）。然而，T-2 和 T-3 之间的滴水损失没有显著差异。
