Details

Autor(en) / Beteiligte

• Cordero, Gustavo
• Merriman, Laura
• de Brito, Alexandre Barbosa
• da Silva, Caio Abercio
• Callegari, M A
• González-Ortiz, Gemma

Titel

PSIV-14 Effect of xylanase and xylooligosaccharides on growth performance and intestinal microbiota in piglets fed a corn-soybean meal based diet

Ist Teil von

• Journal of animal science, 2019-07, Vol.97, p.186-186

Ort / Verlag

Champaign: Oxford University Press

Erscheinungsjahr

2019

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Xylanases are commonly used to improve nutrient digestibility and performance in pig diets. Xylooligosaccharides (XOS) are degraded in the gut primarily by Bifidobacteria, leading to an increase in butyrate production. The objective of this study was to determine the effect of a blend of a xylanase and XOS (Signis, AB Vista) on growth performance and intestinal microbiota profile of weaning piglets. A total of 168 mixed sex PIC weaned piglets weighting between 4.5 and 6.7 kg (5.3 kg average weight) were allocated to 28 pens with 6 animals each and 14 pens per diet blocked by initial weight. Diets consisted of a control (based on corn-SBM) without and with 100 g/tonne Signis. The mash diets were fed over 2 phases: pre-starter (6-11 kg) and starter (11-25 kg). Feed samples were collected for xylanase activities analyses, and results were as expected. Liveability, average daily gain and feed intake were recorded, and feed conversion ratio (FCR) calculated. Colon digesta samples were collected after 6 weeks of Signis supplementation for bacterial identification through 16S rRBA rRNA (V3-V4) sequencing. Results are presented as the relative operational taxonomic units (OTU) values for each bacteria sequenced. Overall, inclusion of Signis reduced (P = 0.05) FCR by 9 points (1.79 vs. 1.88; SEM=0.025) at 42 days post-weaning. No differences in the OTU values were observed between treatments, with Firmicutes making up the largest proportion of the colon microbiota, followed by Actinobacteria and Proteobacteria. Bacteroidetes tended (P < 0.10) to be higher in the Signis group (0.06 vs 0.22; SEM=0.058). Piglets supplemented with Signis had a trend (P < 0.10) to have higher concentration of uncultured Clostridium spp, which are involved in the fermentation of fiber. This suggests that Signis stimulates the development of a fibrolytic microbiome and thus piglet performance.