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Table 9 Monthly volatile fatty acid (VFA) analysis of manure

From: The effect of feeding high fat diet to beef cattle on manure composition and gaseous emission from a feedlot pen surface

Parameters June July August September October
Acetic 48.3 bc* ± 2.2 50.7 ab ± 0.7 46.3 c ± 1.6 51.1 ab ± 1.6 51.4 a ± 1.5
Propionic 18.5 c ± 1.4 21.0 b ± 1.6 24.4 a ± 1.4 22.0 b ± 0.7 21.1 b ± 1.0
Isobutyric 2.0 a ± 0.1 1.6 ab ± 0.1 1.2 bc ± 0.3 1.0 c ± 0.2 1.0 c ± 0.4
Butyric 23.6 a ± 1.5 22.6 a ± 1.2 23.2 a ± 0.9 22.0 a ± 1.2 22.9 a ±1.1
Isovaleric 4.1 a ± 0.6 1.5 b ± 0.1 1.2 b ± 0.2 1.0 b ± 0.1 1.0 b ± 0.3
Valeric 3.5 a ± 1.4 2.6 a ± 0.9 3.7 a ± 0.6 2.9 a ± 0.2 2.6 a ± 0.8
TVFA (mM) 113.7 b ± 10.6 156.1 a ± 11.8 149.2 a ± 18.1 114.5 b ± 9.1 122.5 b ± 13.7
  1. *Values followed by the same letter in row are not significantly different at P ≤ 0.05