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Microbiota alpha-diversity in feces of sows fed different DF levels at different gestation stages. Sow was regarded as the experimental units (n = 10 to 12). (A) Observed species; (B) Shannon index, and (C) Chao 1 index. NPLF, NP level without DF supplement; NPHF, NP level with DF supplement; LPLF, LP level without DF supplement; and LPHF, LP level with DF supplement. *denote P < 0.05.
