Dietary supplementation with Enterococcus faecium Ef026 elicits a systemic improvement in Hy-Line Brown laying hens during the mid-to-late laying phase.

Serum GSH-PX activity increased in all Ef026-treated groups after 8 weeks, with group IV displaying a highly significant enhancement ( P < 0.0001) compared to the control ( Fig. 1 B). ​By the trial’s conclusion, group III also exhibited markedly higher GSH-PX activity than the control ( P < 0.01).

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