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Table 6 Rumen bacterial populations (% of total bacteria) after 6, 12 and 24 h in vitro incubation

From: Partially replacing cornstarch in a high-concentrate diet with sucrose inhibited the ruminal trans-10 biohydrogenation pathway in vitro by changing populations of specific bacteria

Bacteria1 Incubation time Sucrose level SEM 2 P-value 3
0 3 % 6 % 9 % T L Q
B. fibrisolvens 6 h 0.0013 0.0015 0.0018 0.0013 0.0007 0.063 0.580 0.018
12 h 0.0016 0.0022 0.0023 0.0025 0.0001 0.142 0.033 0.480
24 h 0.0017c 0.0020bc 0.0029a 0.0025ab 0.0002 0.008 0.005 0.110
M. elsdenii 6 h 0.041 0.041 0.035 0.044 0.0044 0.927 0.940 0.683
12 h 0.037 0.025 0.035 0.043 0.0039 0.481 0.415 0.249
24 h 0.034a 0.015b 0.021b 0.018b 0.0026 0.036 0.049 0.075
S. bovis 6 h 0.061 0.060 0.038 0.044 0.0121 0.898 0.537 0.886
12 h 0.090 0.099 0.080 0.100 0.0057 0.718 0.756 0.548
24 h 0.080b 0.18a 0.090b 0.11b 0.0139 0.016 0.848 0.062
P. acnes 6 h 0.029 0.035 0.050 0.054 0.0047 0.190 0.039 0.956
12 h 0.073 0.074 0.061 0.069 0.0046 0.776 0.561 0.705
24 h 0.080 0.103 0.077 0.087 0.0049 0.227 0.930 0.463
  1. Note: Means within the same row with different superscripts differ significantly (P < 0.05)
  2. 1 B. fibrisolvens = Butyrivibrio fibrisolvens, S. bovis = Streptococcus bovis, M. elsdenii = Megasphaera elsdenii, P. acnes = Propionibacterium acnes
  3. 2 SEM = standard error of mean
  4. 3 Probability of a significant effect of treatment (T), or linear (L) and quadratic (Q) orthogonal contrasts for dietary sucrose levels