DOI: 10.11118/978-80-7509-994-5-0185

EFFECT OF TANNIN TYPE ON IN VITRO GAS PRODUCTION

HANA PROCHÁZKOVÁ^1,2, DAVID ZAPLETAL¹, LUDMILA KŘÍŽOVÁ³

¹ Department of Animal Breeding, Animal Nutrition & Biochemistry, University of Veterinary Sciences Brno, Palackého tř. 1946/1, 612 42 Brno, Czech Republic

² Agrovýzkum Rapotín s.r.o., Výzkumníků 863, 788 13 Rapotín, Czech Republic

³ Department of Biochemistry, Faculty of Science, Masaryk University, Kotlářská 267/2, 611 37 Brno, Czech Republic

The aim of this study was to determine the effect of different types of tannins on total gas production using in vitro methods using ANKOM Gas Production System. For our study we used 6 products containing tannins commonly available on the market, representing both groups of tannins in the same concentration. Hydrolyzable tannins were presented by the products: FermiTan Harvest Hill, TOP House and Tan Clar. Condensed tannins were presented by the products: Tannin MOX, Tannin FC and VITANIL B. The study using the Ankom Gas Production System was carried out according to Van Soest (1970) with a 5% addition of individual tannins. Incubation was carried out for 48 hours at 39 °C. In our case, there was no evidence of a reduction in the amount of gas produced. Both types of tannins increased the amount of gas produced compared to the control sample containing only the standard. Condensed tannins increased gas production more than hydrolyzed tannins.

Keywords: tannins; in vitro; gas production

pages: 185-193, online: 2024