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相关概念视频

Multiple Comparison Tests01:13

Multiple Comparison Tests

Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...

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Production of Germ-Free Fast-Growing Broilers from a Commercial Line for Microbiota Studies
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甲氨酸来源概念验证试验在 brojlers的元分析.

Andreas Lemme1, Zeyang Li1, Juliano Dorigam1

  • 1Evonik Operations GmbH, 63457 Hanau, Germany.

Animals : an open access journal from MDPI
|June 27, 2024
PubMed
概括

甲氨酸氧类似物 (MHA) 可以用100:65的比例在 brojler 料中取代DL-甲氨酸. 这一元分析证实了MHA的证实.

科学领域:

  • 动物科学动物科学
  • 禽类营养 养 禽类营养
  • 料添加剂 料添加剂

背景情况:

  • 在 brojiler料中,补充 metionin (Met) 是非常重要的.
  • 关于甲氨酸氧类似物 (MHA) 与DL-甲氨酸的营养等价性存在争议.
  • 目前的推表明,MHA与DL-methionine的有效率相比,MHA的有效率为65%.

研究的目的:

  • 进行一项元分析,评估MHA与DL-methionine在 brojler营养中的疗效.
  • 挑战MHA现有的65%疗效建议.
  • 确定影响MHA营养价值的因素.

主要方法:

  • 通过文献搜索,发现了25个出版物,95个数据集.
  • 为了进行元分析,计算了对冲的g效应大小.
  • 数据按肉品种,饮食类型,数据来源和MHA产品分组.

主要成果:

  • 分析揭示了非常低的异质性和小效应大小.
  • DL-甲氨酸的结果与MHA没有显著差异.
  • 在各种子组或食中氨酸+氨酸水平上没有观察到显著的影响.
关键词:
身体体重增加 体重增加brojler 肉 肉 是一个料转换比率是指料转换比率.这是一个元分析.甲氨酸来源 甲氨酸来源

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结论:

  • 在100:65.5的重量对重量的基础上,MHA产品在营养上相当于DL-氨酸.
  • 这种比率在各种生产条件下适用,而不会影响肉的性能.
  • 这些发现支持在65%的水平上直接用DL-methionine取代MHA.