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Lactic acid bacteria concentration of rectal content (top panel, treatment by day interaction, P = 0.0001) and anaerobe concentration of ileal content (bottom panel, treatment effect P = 0.09) for pigs orally given the carrier only, cortisol, or norepinephrine at 0800 and 1600 h on day 0. Data are means ± SE at 0800 and 1600 h on day 1, and at 0800 h on days 2, 7, and 14. a,bP ≤ 0.05.
