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Table 4 Effects of soluble starch concentrations and pH on the specific activity of LDH and α-AMY, and FDP concentrations

From: Relative significances of pH and substrate starch level to roles of Streptococcus bovis S1 in rumen acidosis

Items PH Concentration (g/L) MeanpH SEMTotal P pH P c P pH×c
1 3 9
LDH (U/L)1 6.5 1.09 2.71 3.83 2.54b 0.906 <0.001 0.007 0.550
5.5 4.60 5.87 8.90 6.46a
MeanC 2.85b 4.29b 6.37a  
α-AMY (U/L)1 6.5 38.52 52.81 59.74 50.36b 3.610 <0.001 <0.001 0.027
5.5 59.90 59.26 88.47 69.21a
MeanC 49.21b 56.04b 74.10a  
FDP (mM/L)2 6.5 24.92 30.68 33.38 29.66a 0.832 0.032 <0.001 0.371
5.5 23.29 27.81 32.94 28.01b
MeanC 24.11c 29.24b 33.16a  
  1. 1Activity (U/L) per 107 cells break down in 1 mL medium
  2. 2Concentration (mM/L) per 107 cells break down in 1 mL medium
  3. a, b, cMeans different superscripts differ significantly (P < 0.05)