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. 2021 Aug 11;12:671691. doi: 10.3389/fphys.2021.671691

FIGURE 1.

FIGURE 1

Effect of L-citrulline supplementation on thermotolerance of broilers during acute heat stress. (A) Ear temperature. (B) Respiratory rate. (C) Rectal temperature. (D) Core body temperature. (E) Mean rectal temperature. (F) Mean core body temperature Data are presented as mean ± SEM (n = 12). TNZ, thermoneutral; HS, heat stress. *Indicates significant effect of treatments at P < 0.05.