基于乳酸菌的益生菌和后生菌疗效也受到其他因素的影响,而不仅仅是饮食挑战条件
Samuel C G Jansseune1,2,3, Aart Lammers4, Jürgen van Baal1
1Animal Nutrition Group, Department of Animal Sciences, Wageningen University & Research, Wageningen, the Netherlands.
Journal of animal physiology and animal nutrition
|September 28, 2024
概括
该研究发现,基于乳酸菌的益生菌及其后生菌并没有在具有挑战性的饮食中持续改善肉的表现. 他们之前报告的恢复效果是不可重现的,这表明了取决于背景的生理影响.
科学领域:
- 动物营养 动物营养
- 禽畜科学 禽畜科学 禽畜科学
- 肠道健康 肠道健康
背景情况:
- 具有挑战性的饮食 (CDs) 可能会对肉的表现和健康产生负面影响.
- 基于乳酸菌的益生菌及其衍生后生菌已经显示出减轻这些影响的潜力.
- 之前的研究报告了这些添加剂对食具有挑战性的食的 brojlers 的"恢复"效果.
研究的目的:
- 为了证实先前报告的益生菌 (Pro) 和后生菌 (Post) 的"恢复"效应,在被挑战性饮食养的肉中.
- 为了评估Pro和Post在两种不同的具有挑战性的饮食配方中的有效性.
- 评估这些添加剂对生长性能,脚病变和血参数的影响.
主要方法:
- 1600只雄性罗斯308肉从第1天到第35天被养标准饮食 (SD) 或两种具有挑战性的饮食 (Rye CD,DDGS CD).
- 饮食的营养水平相同,但CD含有更高的非粉多糖.
- 治疗包括每个CD内的控制,Pro和Post组,以及额外的SD组.
主要成果:
- 与SD相比,具有挑战性的饮食 (Rye CD,DDGS CD) 恶化了料转换率.
- 益生菌和后生菌并没有持续改善生长性能或减轻具有挑战性的饮食的负面影响.
- 只有在Rye CD组中观察到特定的添加效应,Post降低了体重,Pro增加了血.
结论:
- 以前观察到的商业益生菌和后生菌的"恢复"效应在测试条件下无法重现.
- 这些发现表明,益生菌和后生菌的生理影响可能是特定于某些饮食或环境条件.
- 需要进一步的研究来阐明这些添加剂在 brojlers 中发挥作用的确切条件.
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