Skip to main content

Advertisement

Table 3 Total volatile fatty acids (VFA) concentrations and individual VFA profiles after 48 h of in vitro ruminal fermentation of purple prairie clover (PPC; Dalea purpurea Vent.) and cool-season native grasses that were harvested when PPC reached the vegetative (VEG), full flower (FL) and seedpod (SP) stages and combined at different ratios

From: Effects of inclusion of purple prairie clover (Dalea purpurea Vent.) with native cool-season grasses on in vitro fermentation and in situ digestibility of mixed forages

Maturity (M)PPC percentage (PP)SEMeP valuesf
0255075100MPPM × PPLQ
 Total VFA, mmol/L      
VEG32.4c35.9b33.5bc33.7bc40.0a1.44< 0.0010.001< 0.001< 0.0010.020
FL28.124.426.026.527.5    0.3060.215
SP26.7a26.2a23.9b23.1bc21.9c    < 0.0010.723
 Acetate (A), % of the total VFA      
VEG59.4c60.6c62.4b63.0b65.4a0.630.004< 0.0010.001< 0.0010.569
FL58.9e61.3d65.2c67.3b69.8a    < 0.0010.457
SP59.2c60.7c64.7b65.1b67.7a    < 0.0010.601
 Propionate (P), % of the total VFA      
VEG32.0a29.3b28.0bc26.9c24.2d0.430.122< 0.0010.008< 0.0010.954
FL33.5a30.1b26.7c25.2d23.3e    < 0.0010.001
SP32.6a30.5b27.8c26.4d24.3e    < 0.0010.258
 Butyrate, % of the total VFA      
VEG7.6b8.4ab8.3ab8.4ab8.5a0.57< 0.001< 0.001< 0.0010.0960.261
FL7.4ab7.8a6.9b5.9c5.3c    < 0.0010.073
SP7.8a7.9a6.8b7.3ab6.5b    0.0060.872
 Branch-chained VFA, % of the total VFA      
VEG1.1c1.6ab1.3bc1.7ab1.9a0.14< 0.001< 0.0010.2840.0060.907
FL0.3c0.9b1.2b1.5a1.6a    < 0.0010.015
SP0.4c0.9b0.9b1.3a1.5a    < 0.0010.603
 A:P ratio      
VEG1.87d2.08c2.24bc2.36b2.72a0.0570.102< 0.001< 0.001< 0.0010.236
FL1.76e2.04d2.44c2.70b3.00a    < 0.0010.567
SP1.82e1.99d2.33c2.47b2.81a    < 0.0010.397
  1. a,b,c,dMeans with different superscript letters in the same row differ (P < 0.05)
  2. eSEM: standard error of the means
  3. fL linear, Q quadratic, These are linear and quadratic contrasts across PPC percentages within PPC maturity