Fig. 4From: Exploring the effectiveness of in ovo feeding of vitamin C based on the embryonic vitamin C synthesis and absorption in broiler chickensPlasma VC content in broilers at D1, D21 and D42. Values are means ± SEM. a–b Values with different superscript letters are different (P < 0.05, n = 8). D1, post-hatch day 1Back to article page