Journal
ARCHIVES OF ANIMAL NUTRITION
Volume 62, Issue 2, Pages 141-151Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17450390801892617
Keywords
piglets; fibre; cellulose; lignin; microbiology; ammonia; digestibility
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The study aimed to investigate the effects of insoluble dietary fibre differing in lignin content on performance and parameters of gut microbiology in 48 weanling piglets (8.5kg mean body weight) fed common diets ad libitum. Fibre sources tested were wheat bran (low lignin) and pollen from Chinese Masson pine (Pinus massoniana) as model of fibre rich in lignin, added to diets as follows: no addition (control), 3.0% wheat bran, 1.27% pine pollen and 2.55% pine pollen. In colonic chyme, bacterial colony counts remained unaffected by treatment, but ammonia contents were reduced by fibre additions (up to-38%). The effects on ammonia were best explained by added cellulose and lignin. Fibre additions reduced apparent (faecal) digestibility of dry matter (DM) and crude protein (CP) up to-3.5 and-4.3% units with cellulose and lignin being the major determinants for changes in CP digestibility.
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