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Table 6 Effect of dietary characteristics and xylanase addition on fecal SCFA in growing pigs1

From: Oat bran and wheat bran impact net energy by shaping microbial communities and fermentation products in pigs fed diets with or without xylanase

Item2 Xylanase-free diets Xylanase supplementation diets SEM P-value
Basal diet 36% OB 27% WB 15% OB 12% WB Basal diet 36% OB 27% WB 15% OB 12% WB Diet Xylanase D×X3
Acetate 0.68e 1.23cde 2.22ab 1.24cde 1.59cd 1.07de 1.66bcd 1.73bc 1.22cde 2.50a 0.123 < 0.001 0.002 < 0.001
Propionate 0.36e 0.81cde 1.28ab 0.74cde 0.99bcd 0.62de 1.15abc 0.92bcd 0.76cde 1.54a 0.096 < 0.001 0.015 0.002
Isobutyrate 0.04c 0.08abc 0.09abc 0.09abc 0.08abc 0.06bc 0.13ab 0.14a 0.07abc 0.15a 0.016 < 0.001 0.003 0.074
Butyrate 0.19b 0.35b 0.59ab 0.40ab 0.45ab 0.26b 0.44ab 0.35b 0.39ab 0.67a 0.065 < 0.001 0.521 0.018
Isovalerate 0.09c 0.17abc 0.24a 0.18abc 0.11bc 0.11bc 0.22ab 0.23ab 0.17abc 0.26a 0.025 < 0.001 0.009 0.024
Valerate 0.09b 0.20ab 0.17ab 0.23ab 0.15ab 0.15ab 0.28a 0.14ab 0.18ab 0.24ab 0.037 0.023 0.184 0.221
Total SCFA 1.48e 2.88cde 4.65ab 2.90cd 3.41bcd 2.29de 3.95bc 3.58bcd 2.83cde 5.42a 0.295 < 0.001 0.012 0.004
  1. a,b,c,d,eValues with different characters in superscripts were different (P < 0.05) in the same row
  2. 1Treatment means are reported as least squares means and are based on 6 observations per treatment. OB Oat bran; WB Wheat bran; SCFA Short-chain fatty acid; SEM Standard error of the mean
  3. 2SCFA concentration (mg/g Feed DM) = SCFA concentration (mg/g feces DM) × feces DM (g)/feed DM (g)
  4. 3D×X is the interaction between diet and xylanase supplementation