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Effect of dietary fiber on the relative mRNA expression levels of intestinal tight-junction protein-related genes in growing pigs. Control, corn–soybean meal-based diet (1.5% CF). Beet pulp, corn–soybean meal + beet pulp-based diet (5.74% CF). Pairing, corn–soybean meal-based diet (the feed intake was equal to the beet pulp group, 1.5% CF). ZO-1, zonula occludens 1. a,b Within a row, means without a common superscript letter differ (p < 0.05).
