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Effects of Quillaja saponaria extract alone or in combination with Yucca schidigera extract on ruminal fermentation and methanogenesis in vitro
Author(s) -
PEN Bunthoeun,
SAR Chetra,
MWENYA Benson,
TAKAHASHI Junichi
Publication year - 2008
Publication title -
animal science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.606
H-Index - 38
eISSN - 1740-0929
pISSN - 1344-3941
DOI - 10.1111/j.1740-0929.2008.00517.x
Subject(s) - fermentation , methanogenesis , rumen , propionate , food science , chemistry , hay , biology , zoology , biochemistry , methane , organic chemistry
The objective of the study was to evaluate effects of Quillaja saponaria (QS) with or without Yucca schidigera extract (YS) on in vitro ruminal fermentation and methanogenesis. The culture media consisted of 400 mL of strained rumen fluid collected from two non‐lactating Holstein cows and 400 mL of artificial saliva. The culture media was anaerobically incubated with 10 g of a mixture of concentrate and oat hay (1:1, w/w) at 39°C for 24 h. The treatments were arranged as 2 × 3 factorial design experiment consisting of three levels of QS (0, 2 or 4 mL/L) and two levels of YS (0 or 2 mL/L). Treatment interactions between QS and YS were observed for pH and ammonia N concentration. CH 4 production was not modified by addition of QS but decreased ( P < 0.05) when added with YS. Addition of QS with YS increased ( P < 0.05) propionate concentrations. Protozoa numbers were decreased ( P < 0.05) by QS addition alone or with YS. Results show that QS and YS exhibited strong antiprotozoal effects and combinations of both plant extracts may have potential as safe manipulators of ruminal fermentation.