小麦秸秆与米糠粕瘤胃体外发酵组合效应研究
孟梅娟;涂远璐;白云峰;严少华;高立鹏;刘萍
【期刊名称】《草业学报》 【年(卷),期】2016(025)009
【摘要】This study used an in vitro gas production technique to investigate the associative effects of wheat straw (WS)and rice bran meal (RBM),on the fermentation characteristics of WS mixed with RBM at rations of 100∶0 (RBM0),75∶25 (RBM25),50∶50 (RBM50),25∶75 (RBM75)and
0∶100
(RBM100).Key
re-sults
were:1)For
gas
measurements,12,24 and 48 h gas production (GP),maximum theoretical (HM)and rate of biogas production (B)increased while the lag time reduced incrementally (P <0.05)with the percentage of RBM added;2)The RBM25 group had the highest positive associative effects for B (P <0.05);3)For dry matter degradation (DMD),neutral detergent fiber degradation (NDFD)and acid detergent fiber degradation (ADFD),the RBM75 group had the highest values (P <0.05 ),while for DMD,the RBM25 group had the highest positive associative effects (P <0.05).For NDFD and ADFD,the RBM75 group had the highest posi-tive associative
effects
(P
<0.05);4)With
the
RBM75
mixture,the
acetate,propionate,butyrate and total volatile fatty acid production were highest,and acetate∶propionate was the lowest;5)For the 48 h GP,B was positively related to dry matter (DM),crude protein (CP),crude ash
小麦秸秆与米糠粕瘤胃体外发酵组合效应研究
