Table 5 Estimates of organic matter intake (OMI) based on faecal output, which derived from the group or individual n-hexatriacontane (C36) excretion and different digestibility markers, and organic matter digestibility (OMD) based on these markers.

From: Feed intake, digestibility and passage kinetics in grazing horses

Marker

OMI (kg/day)

OMD

n-pentacosane (C25)

9.1 / 7.9 ± 1.4

0.47 ± 0.060

n-heptacosane (C27)

9.6 / 8.0 ± 1.7

0.50 ± 0.072

n-nonacosane (C29)

13.4 / 11.4 ± 0.93

0.64 ± 0.032

n-hentriacontane (C31)

14.9 / 12.6 ± 0.89

0.68 ± 0.023

n-tritriacontane (C33)

8.7 / 7.5 ± 0.51

0.45 ± 0.023

  1. The OMD is given as coefficients. Estimates based on C36 excretion of the group of horses (n = 5) are given before the slash, estimates based on individual C36 excretion (n = 3) are given as arithmetic mean and standard deviation thereafter.
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