Table 2 Faecal volatiles peak area ratio.

Candidate Molecule IUPAC name	Gestation (N = 8)	Lactation (N = 8)	SE^a	P value^b
3-Methylbutanoic acid*	0.07	0.09	0.03	0.57
Pentanoic acid*	0.05	0.05	0.03	0.99
4-Methylphenol*	0.95	0.93	0.06	0.77
Methyl 13-Methyltetradecanoate	0.07	0.09	0.01	0.11
Methyl 12-Methyltetradecanoate	0.19	0.25	0.03	0.19
Methyl pentadecanoate*	0.14	0.15	0.02	0.58
Methyl 14-Methylpentadecanoate	0.03	0.04	0.01	0.42
Methyl hexadecanoate*	0.52	0.38	0.07	0.10
Methyl 14- Methyl Hexadecanoate	0.02	0.03	0.01	0.10
Methyl 15- Methyl Hexadecanoate	0.03	0.04	0.01	0.10
Methyl heptadecanoate*	0.01	0.01	<0.01	0.40
1H-Indole*	0.07	0.04	0.01	0.06
Hexadecan-1-ol	0.03	0.03	0.01	0.95
3-Methylindole (skatole)*	0.09	0.23	0.02	<0.01
Methyl Octadecanoate*	0.22	0.20	0.02	0.52
Methyl (Z)-octadec-9-enoate*	0.25	0.13	0.03	0.01
13- Octadecanoic acid, Methyl ester	0.10	0.06	0.01	0.03
Methyl octadeca-9,12-dienoate*	0.24	0.15	0.02	0.01
Methyl (9Z,12Z,15Z)-octadeca-9,12,15-trienoate*	0.01	0.02	<0.01	0.47
Methyl (Z)-heptadec-10-enoate	0.09	0.09	0.01	0.92
Tetradecanoic acid (myristic acid)^*	0.17	0.24	0.02	0.01
1,3-dihydroindol-2-one	0.07	0.06	0.01	0.24
Unknown	0.09	0.23	0.05	0.02
Unknown	0.27	0.43	0.04	0.01
Pentadecanoic acid*	0.15	0.23	0.04	0.12
Hexadecanoic acid*	0.89	0.91	0.07	0.841

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