Effect of tamarind (Tamarindus indica) seed husk tannins on in vitro rumenfermentation

Citation
R. Bhatta et al., Effect of tamarind (Tamarindus indica) seed husk tannins on in vitro rumenfermentation, ANIM FEED S, 90(3-4), 2001, pp. 143-152
Citations number
18
Categorie Soggetti
Animal Sciences
Journal title
ANIMAL FEED SCIENCE AND TECHNOLOGY
ISSN journal
03778401 → ACNP
Volume
90
Issue
3-4
Year of publication
2001
Pages
143 - 152
Database
ISI
SICI code
0377-8401(20010416)90:3-4<143:EOT(IS>2.0.ZU;2-Z
Abstract
This study was conducted to determine the effect of tamarind seed husk (TSH ) as a source of tannin on various parameters of rumen fermentation in vitr o. The TSH contained 14% tannin (DM basis). The biological interference of TSH tannin on rumen fermentation was assessed using polyethylene glycol (PE G) 6000 as an indicator. Three compound feed mixtures (CFM) were prepared e ither without TSH (CFM-I), with 2.5% TSH (CEM-II) and with 7.5% TSH (CFM-II I). Parameters studied were in vitro gas production with PEG, rate of subst rate degradation, and microbial protein synthesis. Addition of PEG to TSH r esulted in an increase in gas production from 5.5 to 16.5 ml per 200 mg DM. Presence of TSH tannin depressed cumulative gas production by 16.8% in CFM -II, and by 29.2% in CFM-III during initial stages off fermentation (i.e. a t 8 h). Rate of substrate disappearance (T-1/2) was 14.4, 17.6 and 20.5 h i n CFM-I, CFM-II and CFM-III, respectively. Irrespective of the carbohydrate source, presence of TSH tannin improved the efficiency of microbial protei n synthesis in vitro. Thus, TSH is a natural source of tannin that can be u sed to beneficially manipulate rumen fermentation. (C) 2001 Elsevier Scienc e B.V. All rights reserved.