0.857
IF5
0.900
IF
Q3
JCR
0.92
CiteScore
0.405
SJR
Q2
SJR
20
MNiSW
165.24
ICV
ORIGINAL PAPER
 
CC-BY 4.0
 
 

Improvement of organic matter digestibility along with changes of physical properties of rice straw by chemical treatments

J. K. Wang 1,  
J. X. Liu 1  ,  
Y. M. Wu 1,  
 
1
College of Animal Science, Zhejiang University, 310029, Hangzhou, China
J. Anim. Feed Sci. 2006;15(1):147–157
Publish date: 2006-01-06
KEYWORDS
ABSTRACT
This study was carried out to study the effects of different chemical treatments on physical properties and digestion of rice straw. Rice straw was treated with sodium hydroxide (NaOH) at 15, 30, 45, 60 or 75 g/kg dry matter, ammonia bicarbonate (NH4HCO3) at 30, 60, 90, 120 or 150 g/kg or their combinations (10 or 20 g NaOH/kg and 30, 60 or 90 g NH4HCO3/kg), respectively. The relationship between straw digestion and its physical properties was analysed. Treatment with NaOH increased the volumetric weight (VW), swelling capacity (SC), water-holding capacity (WHC), and in vitro organic matter digestibility (OMD), and decreased specific porosity (SP) of rice straw linearly. Treatment with NH 4HCO3 did not significantly affect VW, SC, or SP, but increase OMD linearly and tended decrease WHC. For the combination treatment of NaOH and NH 4HCO3, there existed significant interactions on SC, SP and OMD. A significant linear correlation was found between OMD and VW, SC, SP, or WHC, when the data for all treatments were analysed. The accuracy of regression equation could be improved by including multiple physical property parameters. It is inferred that change in all physical properties is indicative of improvement in straw digestion after treatment.
CORRESPONDING AUTHOR
J. X. Liu   
College of Animal Science, Zhejiang University, 310029, Hangzhou, China
 
CITATIONS (2):
1. A physicochemical method for increasing methane production from rice straw: Extrusion combined with alkali pretreatment
Yalei Zhang, Xiaohua Chen, Yu Gu, Xuefei Zhou
Applied Energy
2. Enhancing methane production from rice straw by extrusion pretreatment
Xiaohua Chen, YaLei Zhang, Yu Gu, Zhanguang Liu, Zheng Shen, Huaqiang Chu, Xuefei Zhou
Applied Energy
ISSN:1230-1388