在富含非粉多糖的 brojiler 食中加入基于 Bacillus 的益生菌
Farshad Goodarzi Boroojeni1, Yada Duangnumsawang1,2, Damian Józefiak3
1Institute of Animal Nutrition, Department of Veterinary Medicine, Freie Universität, Berlin, Germany.
Archives of animal nutrition
|February 2, 2024
概括
这项研究发现,虽然Bacillus益生菌改善了 brojler 料摄入量和体重增加,但它在抵消麦对营养消化能力和性能的负面影响方面取得了有限的成功. 总体而言,肉的表现没有达到品种目标.
科学领域:
- 动物营养和料科学 动物营养和料科学
- 禽畜科学 禽畜科学 禽畜科学
- 微生物学和肠道健康
背景情况:
- 在肉的饮食中加入麦可能会对性能和营养消化能力产生负面影响,因为它含有诸如阿拉比诺克西兰等非粉多糖类.
- 基于细菌的益生菌 (BP) 正在探索其改善禽类肠道健康和营养利用的潜力.
研究的目的:
- 为了研究多菌株Bacillus益生菌对肉的表现,营养消化能力和肠道粘度在不同的饮食麦水平下的影响.
- 评估Bacillus菌株在 brojler中减轻麦阿拉比诺克斯兰的反营养作用的能力.
主要方法:
- 对720只母肉进行了3x3的因数设计实验,测试了三种Bacillus益生菌水平 (0,1.2x10^6,1.2x10^7 CFU/g) 和三种谷麦含量水平 (0,200,400 g/kg).
- 评估的参数包括体重增加 (BWG),料摄入量,料转化率 (FCR),营养素和氨基酸的表面阴道消化率 (CAID),阴道消化粘度,葡萄糖胺和银胺度.
主要成果:
- 高含量 (200-400g/kg) 降低了BWG,增加了FCR,同时降低了蛋白质,提取物,,和氨基酸的CAID.
- 细菌益生菌补充剂在2-3周增加了料摄入量和BWG,但降低了CAID,并没有显著影响阴茎粘度或其组成部分.
- 最高的益生菌剂量 (1.2x10^7 CFU/g) 改善了氨酸和氨酸的CAID,但整体表现仍低于品种目标,这表明对麦的负面影响的有效性有限.
结论:
- 食麦显著损害肉的表现和营养消化能力,在更高的含量率下,效应会加剧.
- 经测试的Bacillus菌株显示其降解麦阿拉比诺基兰的能力有限,只能部分缓解负面影响.
- 需要进一步的研究来确定更有效的益生菌菌株或策略,以充分克服麦在肉饮食中所带来的挑战.
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