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Table 10 Impact of CAL on performance, methane emission, and ruminal fermentation of lambs (Exp. 3)

From: Dietary Coleus amboinicus Lour. decreases ruminal methanogenesis and biohydrogenation, and improves meat quality and fatty acid composition in longissimus thoracis muscle of lambs

Parameters CON CAL SEM P-value
Body weigth, kg
 Inital BW 19.3 19.7 0.66 0.70
 Final BW 25.1 26.8 0.53 0.13
 ADG, g/d 167 196 9.45 0.14
Total tract digestibility, g/kg
 Dry matter 630 649 8.27 0.26
 Organic matter 607 604 6.80 0.82
 Crude protein 604 601 7.71 0.85
 Neutral detergent fiber 577 578 13.3 0.97
Methane emission
 CH4, L/d 20.0 15.9 0.11 < 0.01
 CO2, L/d 307 274 2.24 < 0.01
 CH4/CO2, mL/L 63.6 54.4 0.26 < 0.01
 CH4, L/kg DM intake 29.9 21.1 1.44 < 0.01
 CH4, L/kg OM intake 32.4 23.3 1.49 < 0.01
 CH4, L/kg BW 1.02 0.82 0.05 0.02
Rumen fermentation
 pH 6.22 6.35 0.04 0.05
 NH3, mmol/L 9.92 15.5 0.64 0.09
 Total VFA, mmol/L 112 118 3.70 0.48
 VFA, molar percent
  Acetate (A) 69.9 68.1 0.51 0.07
  Propionate (P) 17.7 19.8 0.46 0.01
  Isobutyrate 0.95 0.79 0.05 0.08
  Butyrate 9.92 10.2 0.30 0.70
  Isovalerate 0.47 0.23 0.05 < 0.01
  Valerate 1.06 0.86 0.05 0.04
  A/P ratio 3.96 3.46 0.11 0.01
  1. CON control diet, CAL Coleus amboinicus Lour. diet, SEM standard error of means, DM dry matter, OM organic matter, BW body weight, ADG average daily gain, VFA volatile fatty acids
  2. Means in the same row indicate significant differences at P < 0.05 and tended to significant at P < 0.10