TY  - JOUR
T1  - The Effect of Tannic Acid on <I>in vitro</I> Gas Production and Rumen Fermentation of Sunflower Meal
AU - Mohammadabadi, T. AU - Chaji, M. AU - Tabatabaei, S. 
JO  - Journal of Animal and Veterinary Advances
VL  - 9
IS  - 2
SP  - 277
EP  - 280
PY  - 2010
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2010.277.280
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2010.277.280
KW  - Tannic acid
KW  -gas production
KW  -rumen fermentation
KW  -sunflower meal
AB  - The aim of this study was to investigate the effect Tannic Acid (TA, 20 and 30 g kg<SUP>-1</SUP> DM) on <I>in vitro</I> gas production and rumen fermentation of low and high fat sunflower meal (25 and 165 g kg<SUP>-1</SUP> DM, respectively). Kinetics of gas production was fitted to an exponential model. The results showed that tannic acid caused to reduce the fermentable fraction (b) and gas production rate constant for the insoluble fraction (c) (p&lt;0.05) and the lowest (b) and (c) was for low fat Sunflower Meal (SML) treated by 30 g kg<SUP>-1</SUP> DM TA (102.5 and 0.01 mL h<SUP>-1</SUP>, respectively). The Organic Matter Digestibility (OMD) and Metabolizable Energy (ME) were decreased by TA treatments. Untreated SML had the highest ME and OMD (29.4 MJ kg<SUP>-1</SUP> DM, 185.6 g kg<SUP>-1</SUP> OM, respectively).The ammonia-N (NH<SUB>3</SUB>-N) concentrations and Short Chain Fatty Acid (SCFA) decreased (p&lt;0.05) when SM treated with TA. Content of NH<SUB>3</SUB>-N was lowest for SML treated 30 g kg<SUP>-1</SUP> DM TA (12.3 mg dL<SUP>-1</SUP>). Untreated sunflower meal had the lowest SCFA concentration and the highest Microbial Biomass (MB). The results showed, it may be that <I>in vitro</I> fermentation, gas production parameters and nutritive value of sunflower meal are influenced by tannic acid content.
ER  -