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Table 5 Effect of elemental sulfur (S), urea (U) and fresh cassava root (FCR) on total volatile fatty acid (VFA) and their molar portions

From: Sulfur, fresh cassava root and urea independently enhanced gas production, ruminal characteristics and in vitro degradability

Treatments S (%) U (%) FCR (mg) Total VFA C2 C3 C4 C2:C3
 (mmol/L) (mol/100 mol)  
T1 0 2 0 74.81 68.68 20.97 10.35 3.28
T2 0 4 0 74.38 68.46 21.26 10.29 3.23
T3 1 2 0 75.21 67.89 22.50 10.42 3.02
T4 1 4 0 74.73 68.12 21.77 10.30 3.13
T5 2 2 0 74.74 67.53 25.43 10.53 2.66
T6 2 4 0 74.35 68.41 25.09 10.50 2.73
T7 0 2 200 76.21 65.44 23.54 10.53 2.78
T8 0 4 200 75.74 66.69 22.66 10.64 2.94
T9 1 2 200 77.41 65.43 26.57 10.50 2.46
T10 1 4 200 77.11 67.11 25.91 10.64 2.59
T11 2 2 200 78.21 66.78 28.45 10.78 2.35
T12 2 4 200 77.76 67.19 27.06 10.75 2.49
T13 0 2 300 77.30 64.00 28.91 10.59 2.21
T14 0 4 300 75.90 64.17 26.83 10.50 2.39
T15 1 2 300 82.72 64.31 29.12 10.57 2.21
T16 1 4 300 80.74 65.11 28.17 10.72 2.31
T17 2 2 300 85.72 64.04 29.89 10.63 2.14
T18 2 4 300 85.24 65.07 29.82 10.60 2.18
T19 0 2 400 74.22 65.48 24.25 10.27 2.77
T20 0 4 400 73.74 66.28 25.52 10.71 2.60
T21 1 2 400 75.22 62.30 26.73 10.98 2.33
T22 1 4 400 74.24 64.37 25.12 10.51 2.56
T23 2 2 400 76.22 64.35 25.11 10.54 2.56
T24 2 4 400 75.74 63.15 25.80 11.05 2.46
SEM 3.37 1.86 2.70 2.22 0.32
S (%)
 0 75.23 66.15 23.92c 9.54 2.77
 1 77.17 65.57 25.67b 8.62 2.56
 2 78.49 65.81 27.73a 7.16 2.45
P-Value 0.421 0.617 <0.0001 0.063 0.081
U (%)
 2 76.59b 66.18 25.60 8.40 2.63
 4 77.33a 65.52 25.96 8.49 2.55
P-Value 0.008 0.174 0.337 0.872 0.146
FCR (mg)
 0 74.70c 68.18a 22.75c 8.98ab 2.98a
 200 77.08b 66.43b 26.23b 7.78bc 2.60b
 300 81.19a 64.45c 28.54a 6.75c 2.24c
 400 74.89c 64.32c 25.56b 10.26a 2.54b
P-Value <0.0001 <0.0001 <0.0001 0.0004 <0.0001
Interaction
 S*U 0.717 0.713 0.884 0.996 0.436
 S*FCR <0.0001 0.449 0.017 0.018 0.249
 U*FCR 0.437 0.939 0.980 0.904 0.772
 S*U*FCR 0.958 0.908 0.864 0.791 0.861
  1. C2 means acetic acid; C3 means propionic acid; C4 means butyric acid; C2:C3 means acetic acid to propionic acid ratio
  2. a,b,c means within column showed with different superscript letter accepted significantly different