“…A possible explanation may be found in the observed chewing on the sows faeces (coprophagy) (Aviles-Rosa et al, 2019) by the CON piglets whereby they may and CON (blue dots) piglets in the pre-weaning period (Experiment 1) by acid hydrolysis to cleave the glycosidic bonds, thereby releasing mono-sugars, which were measured in gas chromatography. Following previous protocol (Tian, 2016), freeze dried faecal samples were pre-hydrolysed (72% w/w H 2 SO 4 at 30 °C for 1 h), followed by hydrolysis (1M H 2 SO 4 at 100 °C for 3 h), and derivatisation of monosaccharides to their alditol acetates with inositol as an internal standard (Englyst and Cummings, 1984). On the right panel: Pearson correlation plots between monosugars (arabinose and xylose) and the eating behaviour in the last day before sampling (video scores in seconds).…”