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Fig. 4 | Journal of Animal Science and Biotechnology

Fig. 4

From: Ascorbic acid synthesis and transportation capacity in old laying hens and the effects of dietary supplementation with ascorbic acid

Fig. 4

Antioxidant status and immunity of laying hens. a Gene expression levels of thioredoxin (TXN), thioredoxin reductase (TXNR), and cytochrome b5 reductase (CYB5R) and b GSH/GSSG contents in the liver of the old and young hens in Exp. 1. *means P < 0.05; **means P < 0.01. c Effects of dietary supplementation of AA on T-AOC and malonaldehyde (MDA) level and d Total GSH, GSSG, and GSH concentrations in the liver of old laying hens in Exp. 2. Within each panel, means without a common letter differ at P < 0.05

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