Effects of Bacillus subtilis var. natto and Saccharomyces cerevisiae mixed fermented feed on the enhanced growth performance of broilers
Effects of Bacillus subtilis var. natto and Saccharomyces cerevisiae mixed fermented feed on the enhanced growth performance of broilers
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DOI：
10.3382/ps.2008-00224
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发表时间：
2009-02-01
期刊：
影响因子：
4.4
通讯作者：
Hsieh, C. -W.
中科院分区：
文献类型：
--
作者：
Chen, K. -L.;Kho, W. -L.;Hsieh, C. -W.
枯草杆菌纳豆N21（Bac;用于更大的蛋白水解能力）和酿酒酵母Y10（Sac;用于更大的酸性能力）来生产2阶段组合发酵进料。本研究旨在探讨Bac+Sac发酵饲料对肉鸡生长性能的促进作用是由于益生菌本身还是由于发酵过程。试验1包括1日龄肉仔鸡（n = 144），随机分配到对照、添加水（与发酵饲料中相同，23%）和Bac+Sac发酵饲料（FBac+Sac）处理，重复4次。试验2包括21日龄肉鸡（n = 12）分配到控制和FBac+囊组的营养物质利用率的代谢试验。试验3选用1日龄雄性肉仔鸡216只，随机分为6个处理，每个处理设3个重复。处理包括对照、Sac发酵饲料（FSac）、FBac+Sac、Bac粉末（PBac）、Sac粉末（PSac）和Bac+Sac粉末（PBac+Sac）。试验1结果表明，FBac+Sac显著提高了21日龄和39日龄雏鸡的体重和采食量（P < 0.05）。饮水组的体重、增重和采食量显著降低（P < 0.05）。试验2表明，FBac+Sac显著提高了总能量利用率（P < 0.05）。试验3结果表明，FBac+Sac组21日龄和39日龄体重和增重均显著高于对照组（P < 0.05）。日粮中添加益生菌粉和发酵液对肉鸡生长性能无显著影响（P > 0.05）。FBac+Sac处理的生长性能改善可能不是由于添加的水、益生菌粉末内含物或通过单菌株发酵，而是由于使用Bac和Sac菌株的2阶段发酵过程。
Bacillus subtilis var. natto N21 (Bac; for greater proteolytic capacity) and Saccharomyces cerevisiae Y10 (Sac; for greater acidic capacity) were applied to produce a 2-stage combined fermentation feed. This study investigated whether the enhancement of Bac+Sac fermented feed on broiler growth performance was due to the probiotics per se or due to the fermentation process. Trial 1 included 1-d-old broiler chicks (n = 144) randomly assigned to control, water added (same as in the fermentation feed, 23%), and Bac+Sac fermented feed (FBac+Sac) treatments with 4 replicates. Trial 2 included 21-d-old broiler chickens (n = 12) assigned into control and FBac+Sac groups for a metabolic trial for nutrient availability. Trial 3 included 1-d-old male broiler chicks (n = 216) randomly assigned into 6 treatments with 3 replicates. Treatments included a control, Sac fermented feed (FSac), FBac+Sac, Bac powder (PBac), Sac powder (PSac), and Bac+Sac powder (PBac+Sac). The results from trial 1 showed that FBac+Sac increased BW and feed intake (P < 0.05) in 21- and 39-d-old chickens. The water-added group showed decreased BW, weight gain, and feed intake (P < 0.05). Trial 2 showed that FBac+Sac increased gross energy availability (P < 0.05). Trial 3 showed that FBac+Sac increased 21- and 39-d-old BW and weight gain (P < 0.05). Diets supplemented with probiotic powder or fermented with Sac did not improve broiler growth performance (P > 0.05). The growth performance improvement of the FBac+Sac treatment was probably not due to the added water, probiotic powder inclusion, or through single-strain fermentation, but due to the 2-stage fermentation process using Bac and Sac strains.