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. 2022 Mar 8;13:22. doi: 10.1186/s40104-022-00674-7

Fig. 1.

Fig. 1

Plasma urea nitrogen content in piglets. All results are presented as mean ± SEM (n = 8–10/group). AA: Amino acid effect; CB: a carvacrol–thymol blend effect, AA×CB: interaction effect of amino acid and a carvacrol–thymol blend. P < 0.05 significant difference, P < 0.01 extremely significant difference