TY - JOUR
AU1 - Huo, Wenjie
AU2 - Zhu, Weiyun
AU3 - Mao, Shengyong
AB - This study was aimed to investigate the impact of subacute ruminal acidosis (SARA) on the diversity of liquid (LAB) and solid-associated bacteria (SAB) following high-grain feeding. Six ruminally cannulated goats were divided into two groups: one group was fed a hay diet (COD), and the other group was fed a high grain diet (SAID). Rumen liquids and rumen solids were sampled after 2 weeks adaption. SARA was diagnosed with a pH below 5.8 for 8 h. SAID decreased ruminal pH (P < 0.001) and increased the acetate (P = 0.017), propionate (P = 0.001), butyrate (P < 0.001) and total volatile fatty acid (P < 0.001) concentration in rumen compared with the COD. Denaturing gradient gel electrophoresis fingerprints analysis revealed a clear separation between both the diet and the fraction of rumen digesta in bacterial communities. Pyrosequencing analysis showed that the proportion of phylum Bacteroidetes in the SAID-LAB and SAID-SAB communities was less than in the COD group, whereas the SAID group had a greater percentage of Firmicutes in both the LAB and SAB libraries. UniFrac analyses and a Venn diagram revealed a large difference between the two diets in the diversity of rumen bacterial communities. Overall, our findings revealed that SARA feeding did alter the community structure of rumen liquids and rumen solids. Thus, manipulation of dietary factors, such as ratio of forage to concentrate may have the potential to alter the microbial composition of rumen liquid and rumen solid.
TI - Impact of subacute ruminal acidosis on the diversity of liquid and solid-associated bacteria in the rumen of goats
JF - World Journal of Microbiology and Biotechnology
DO - 10.1007/s11274-013-1489-8
DA - 2013-09-26
UR - https://www.deepdyve.com/lp/springer-journals/impact-of-subacute-ruminal-acidosis-on-the-diversity-of-liquid-and-8UO9NK7uDG
SP - 669
EP - 680
VL - 30
IS - 2
DP - DeepDyve
ER -