ORIGINAL PAPER
Addition of cell wall degrading enzyme and wheat
bran on fermentation characteristics and in vitro gas
production of ensiled rice straw
1 |
College of Animal Sciences, Zhejiang University,
310029, Hangzhou, China |
J. Anim. Feed Sci. 2005;14(2):365–372
Publication date: 2005-03-18
KEYWORDS
ABSTRACT
A two way factorial experiment was designed to study the technique aspects of ensiling rice
straw (RS) mixed with Strawzyme (an experimental preparation of cell-wall degrading enzymes)
and wheat bran (WB). The WB was added at levels of 0, 3, 6 or 9% (fresh basis), respectively, and
the RS was untreated (C-0, C-3, C-6 and C-9), or treated with Strawzyme at level of 1300 g/t DM
(T-0, T-3, T-6 and T-9). Addition of WB improved the fermentation quality and nutritive value of
RS silage. The pH value, percentage of ammonia N in total N and butyrate content were decreased,
and lactate content and in vitro gas production (GP) increased with the increasing levels of WB.
Enzyme treatment decreased the neutral detergent fibre, pH, ammonia-N and butyrate, and increased
lactate and in vitro GP. There were significant interaction effects on pH, lactate and butyrate content
between enzyme and WB. Therefore the silages in T-6 and T-9 showed good quality with lowest pH
and highest lactate as well as no any butyrate. Proportion of ammonia N of total N was decreased
by 37.9 or 15.5%, and the lactic acid was increased by 67.8 or 5.7%, respectively, when Strawzyme
plus 6 or 9% WB was added. It can be concluded that combination of Strawzyme with WB was more
effective in the improvement of RS silage quality than addition of WB alone.
CORRESPONDING AUTHOR
J.-X. Liu
College of Animal Sciences, Zhejiang University,
310029, Hangzhou, China
CITATIONS (1):
1. |
Addition of Wheat Bran and/or Rice Straw on Chemical Composition andin vitroRumen Fermentation Characteristics of Ensiled Water Hyacinth J. Li, J. Liu, Y. Wu, J. Ye Journal of Applied Animal Research
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