饮食补充剂与异黄酸盐可以通过微生物群-代谢物-宿主相互作用提高断奶小猪的生长性能和结肠屏障功能
Xiuyu Fang1,2, Zihan Chi2, Zhengyi Wang2
1College of Animal Science and Technology, Southwest University, Chongqing, 400715, People's Republic of China.
Journal of animal science and biotechnology
|December 7, 2025
概括
补充1000毫克/千克的异酸盐,通过增强肠道屏障功能和结肠微生物群,改善了小猪生长和料效率. 这种剂量优化了营养消化能力和免疫反应,减少了断奶小猪的腹.
科学领域:
- 动物科学动物科学
- 肠道健康 肠道健康
- 营养生理学 营养生理学
背景情况:
- 在小猪中断奶通常会导致腹和生长问题,原因是肠道屏障功能受损和结肠短链脂肪酸 (SCFA) 减少.
- 对于减轻这些与断奶有关的问题的有效性和最佳剂量,需要进一步研究.
研究的目的:
- 评估不同饮食水平的异黄酸盐对断奶小猪生长表现,肠道健康和肠道微生物群的影响.
- 确定最佳的剂量,以改善小猪的健康和确定潜在的机制.
主要方法:
- 断奶的小猪被养了28天的饮食,补充了500,1,000,2,000或4,000毫克/公斤的异黄酸盐.
- 评估了生长性能,明显的营养消化能力,血清生物化学参数和肠道屏障标志物.
- 分析了结肠微生物群组成 (16S rRNA测序),SCFA水平和与肠道功能和免疫相关的基因表达.
主要成果:
- 补充500-2,000毫克/公斤的异黄酸盐显著改善了平均每日增益,食效率,并减少了腹发病率,最大效应在1,000毫克/公斤.
- 最佳剂量 (500-1,000 mg/kg) 提高了营养消化能力,增加了分泌免疫球蛋白A (SIgA) 水平,并调节了结肠微生物群,促进了像Prevotella这样的有益细菌.
- 机理学研究显示,肠道屏障功能得到改善,通过降低血清透性标记物和增加紧结蛋白表达来表明,同时还激活了特定的信号通路.
结论:
- 饮食中异黄酸盐,特别是1000毫克/公斤,有效地增强了断奶小猪的肠道形态,屏障功能和免疫状态.
- 这种补充剂促进有益的肠道微生物群和SCFA生产,提供一种可行的策略来缓解断奶引起的肠道疾病,并提供关键的剂量和机制见解.
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