Arch Anim Nutr. 2010 Apr;64(2):121-35. doi: 10.1080/17450390903461584.
Tannins are natural polyphenolic compounds that can reduce digestibility of dietary protein but also display antibacterial effects. The present study investigated, in vitro and in vivo, the effect of different levels of tannins (using a chestnut wood extract containing 75% tannin) on growth performance, intestinal microbiota and wall morphology in piglets. During a 24 h in vitro caecal fermentation, the utilisation of tannin at 0.75, 1.5, 3, and 6 g/l significantly reduced total gas production and concentrations of ammonia and volatile fatty acids and increased viable counts of enterococci and coliforms. When fed to piglets at 1.13, 2.25, and 4.5 g/kg, Tannin significantly improved feed efficiency and reduced caecal concentrations of ammonia, iso-butyric, and iso-valeric acid. Viable counts of lactobacilli tended to be increased by tannin in the jejunum, while bacterial caecal counts were not affected. Depth of ileal crypts tended to decrease in piglets fed tannins at 2.25 and 4.5 g/kg. The present study showed that feeding weaned piglets with a tannin-rich wood extract can result in improved feed efficiency and reduction of intestinal bacterial proteolytic reactions. The growth-enhancing effect that tannins had on enterococci and coliforms under in vitro conditions deserves further investigation.
Insighter offer the advanced solution of GUT Health in animal nutrition,especially for the diarrhea of the weaned piglets.
Pro-Tan(50% Tannalbin) is the milestone of the new animal feed additives,which is water-fast and targeted release in the weak alkali conditions of GUT, without any palatable problem. It is with 2 x Anti diarrhea efficiency than the free Tannin (1 kg Pro-tan (50%)=1.5kg free Tannin (70%)).
