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. 2022 Jan 15;101(4):101732. doi: 10.1016/j.psj.2022.101732

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© 2022 The Authors

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

PMC Copyright notice

Effects of dietary IA supplementation on duodenal villus length, crypt depth, and V/C ratio at 21 d (top row) and 42 d (bottom row) in broiler chickens. Broiler chickens receiving a basal diet (0) or diets supplemented with 0.2, 0.4, 0.6, 0.8, or 1.0% IA; intestines from each experimental group (n = 6) were sectioned and stained with HE. Columns with * indicate a significant difference (P < 0.05). Abbreviations: HE, hematoxylin-eosin stain; V/C, villus length/crypt depth; A, P value of one-way ANOVA; L, P value of linear analysis; Q, P value of quadratic analysis.