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Circadian changes in total volatile fatty acids (VFA), each VFA component, lactic acid and ammonia N concentrations of cattle fed the rumen acidosis‐inducing diet (RAI)‐diet (Control), RAI‐diet plus Propionibacterium‐based probiotic (A‐diet), or RAI‐diet plus Propionibacterium‐based probiotic, fermented products of Lactobacillus, and lactose (B‐diet) once a day. Values represent mean ± SE (n = 4). a P < 0.01 (significant difference compared to the 08.00 hours within the same group).
