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Table 4 Addition of RPMet with low CP their effects on daily production of total and individual volatile fatty acids using the RUSITEC (n = 4)

From: Rumen-protected methionine a feed supplement to low dietary protein: effects on microbial population, gases production and fermentation characteristics

Items Treatment SEM P-value
HP LP LPLMet LPHMet
Total VFA (mM) 100.17a 87.42c 91.33b 100.47a 1.71 < 0.01
Acetate (mM) 50.74a 45.17b 47.17b 47.78ab 0.35 < 0.01
Propionate (mM) 27.60a 25.50b 25.83b 27.50a 0.32 < 0.01
Isobutyrate (mM) 0.83 0.81 0.82 0.83 0.36 0.99
Butyrate (mM) 13.67a 10.33b 11.07b 12.91a 0.45 < 0.01
Isovalerate (mM) 2.97 3.03 3.06 3.07 0.18 0.99
Valerate (mM) 4.18 3.65 3.89 4.09 0.02 0.79
Acetate: propionate ratio 1.84ab 1.75b 1.82ab 1.87a 0.02 0.04
  1. VFA, volatile fatty acids; SEM, standard error of mean
  2. a,b,cSuperscripts values within the same row, are significantly different at (P < 0.05)