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Table 6 Effects of dietary Fps:Cps and FA supplementation (0 or 24 g/d) on in situ DM degradability

From: Effects of fumaric acid supplementation on methane production and rumen fermentation in goats fed diets varying in forage and concentrate particle size

Diets Low-Fps:Cps High-Fps:Cps   P-value
FA, g/d 0 24 0 24 SEM Fps:Cps FA Fps:Cps × FA
Concentrate DM, %
a 11.83 13.77 10.18 11.19 2.315 0.715 0.749 0.959
b 91.09 85.21 84.09 84.75 2.491 0.498 0.634 0.551
k, /h 4.95 5.98 6.43 6.01 0.283 0.194 0.586 0.209
 ERD 68.16 69.35 67.37 67.74 1.256 0.674 0.781 0.884
Alfalfa hay DM, %
a 16.18 15.00 18.39 15.08 1.647 0.755 0.545 0.773
b 37.95 41.19 41.06 39.04 1.164 0.850 0.808 0.310
k, /h 11.45 11.12 8.54 13.42 1.545 0.927 0.505 0.446
 ERD 47.45 48.67 51.26 47.08 0.970 0.560 0.446 0.181
  1. FA fumaric acid, Fps:Cps ratio of forage particle size: concentrate particle size, SEM pooled standard error of the means
  2. a = rapidly degradable fraction, b = slowly degradable fraction, k = constant rate of degradation of fraction b; ERD = effective ruminal degradability