孕产妇补充可以增加羔羊的断奶体重,并调节肠微生物群
A T Nunes1, D L de Almeida2, C A Faleiros1
1Department of Veterinary Medicine, School of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Pirassununga, São Paulo 13635-900, Brazil.
Animal : an international journal of animal bioscience
|February 5, 2026
概括
孕产妇补充可以改善羔羊的断奶体重和改变肠微生物,可能提高营养使用和稳定性. 这项研究探讨了 propionate 的含量.
科学领域:
- 动物科学动物科学
- 微生物学 微生物学
- 营养科学 营养科学
背景情况:
- 孕产妇的营养影响后代的发育和 rumen 微生物群的建立.
- 孕产妇补充对羔羊的表现和肠微生物群的影响尚不清楚.
研究的目的:
- 为了研究孕期晚期和早期哺乳期母体基酸盐补充剂对后代肠微生物群落和羔羊的表现的影响.
主要方法:
- 十五只怀孕的母羊每天要么没有补充,要么每天接受1.5毫克 propionate.
- 羊羔在80天后被奶,在养场完成养,并在132天后被屠宰.
- 分析了体微生物群的组成,料摄入量,体重,每日增加,料效率和尸体产量.
主要成果:
- 孕产妇补充的显著增加了羔羊的断奶体重 (P=0.048).
- 虽然总体微生物多样性保持不变,但补充剂改变了特定细菌属的丰富性,包括Flexilinea的增加和Streptococcus,Oribacterium和Pseudobutyrivibrio的减少.
- 没有观察到在料摄入量,每日增加或尸体重量方面存在显著差异.
结论:
- 在孕期晚期和早期哺乳期,每天1.5毫克的母乳基酸盐补充剂增加了羔羊的断奶体重.
- 补充剂调节了关键的肠微生物种群,这表明对营养利用和肠稳定性有潜在的益处.
- 需要进一步的研究,以充分阐明母亲补充对后代健康和生产力的机制和长期影响.
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