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Table 3 Effects of nitrate on relative abundance of methanogenic genera

From: Nitrate decreases ruminal methane production with slight changes to ruminal methanogen composition of nitrate-adapted steers

Item Treatments SEM P-value Contrast
0NR 1NR 2NR P L P Q
vadinCA11 56.15 54.15 58.34 2.62 0.51 0.55 0.32
Methanobrevibacter 36.64 35.43 32.89 2.20 0.49 0.25 0.81
Methanosphaera 0.8100b 0.8550b 1.3575a 0.0977 0.0057 0.0033 0.0881
Methanimicrococcus 0.1000b 0.1017b 0.2300a 0.0333 0.0199 0.0113 0.0979
Methanoplanus 0.0033a 0.0012b 0.0009b 0.0005 0.0028 0.0013 0.1508
Methanosarcina 0.0029 0.0045 0.0028 0.0007 0.2141 0.9550 0.0855
Methanobacterium 0.0019 0.0014 0.0013 0.0004 0.4066 0.2816 0.4590
Methanoculleus 0.0003b 0.0010a 0.0003b 0.0002 0.0417 1.0000 0.0140
  1. 0NR control, 1NR 1% nitrate, 2NR 2% nitrate, PL is liner tendency; PQ is quadratic tendency