Characteristics of Lactobacillus parafarraginis ZH1 and its role in improving the aerobic stability of silages.
OBJECTIVE
Lactobacillus parafarraginis ZH1 isolated from silage was characterized, and the effects of inoculating ZH1 and Lact. buchneri (LB) on the aerobic stability of sweet corn stalk (SCS) silage and whole-plant oat (WPO) silage ensiled at 15 and 30°C were studied.


RESULTS
After ensiling of SCS or WPO in plastic bottle silo for 45 days, silos were opened, and aerobic stability was studied by monitoring temperature change with thermo recorders in silage for 6 days. SCS silage and WPO silage were well conserved naturally at both storage temperatures. However, silages were prone to aerobic deterioration due to the presence of residual yeasts. ZH1 inoculated silages ensiled at both temperatures, LB inoculated silages ensiled at 30°C had better aerobic stability than the uninoculated silages and the LB-inoculated silage at 15°C.


CONCLUSIONS
Strain ZH1 improved the aerobic stability of SCS silage and WPO silage ensiled at both 15 and 30°C, while LB improved the aerobic stability of silage only ensiled at the high temperature of 30°C.


CONCLUSIONS
The new strain ZH1 can be used as an effective inhibitor for aerobic deterioration of silage maintained from 15 to 30°C.
College of Agriculture, South China Agricultural University, Guangzhou, China; College of Prataculture Science, Nanjing Agricultural University, Nanjing, China.
Q H
QH
Liu
F Y
FY
Yang
J G
JG
Zhang
T
T
Shao
D000332:Aerobiosis; D005285:Fermentation; D007778:Lactobacillus / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism / Q000502:physiology*; D008969:Molecular Sequence Data; D012820:Silage / Q000032:analysis / Q000382:microbiology*; D013696:Temperature; D015003:Yeasts / Q000302:isolation & purification
Lactobacillus parafarraginis; aerobic stability; silage; temperature; yeast