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פותח על ידי קלירמאש פתרונות בע"מ -
The passage of lactic acid bacteria from silage into rumen fluid, in vitro studies
Year:
2004
Source of publication :
Journal of Dairy Science
Authors :
גמבורג, מירה
;
.
וינברג, צבי
;
.
חן, יאירה
;
.
Volume :
87
Co-Authors:
Weinberg, Z.G., Department of Food Science, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Chen, Y., Department of Food Science, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Gamburg, M., Department of Food Science, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Facilitators :
From page:
3386
To page:
3397
(
Total pages:
12
)
Abstract:
Inoculated silages sometimes improve cattle performance, possibly because of probiotic effects of lactic acid bacteria (LAB) silage inoculants. The cause of improved animal performance following feeding with inoculated silage is unclear. One issue in studying this phenomenon is to find out whether LAB pass from silage into the rumen fluid and survive in it. The purpose of the present study was to determine whether LAB from inoculated and uninoculated silages pass into the rumen fluid in vitro. Wheat and corn silages, uninoculated or inoculated with 1 of 10 commercial silage inoculant LAB, were prepared in glass jars. After ensiling, a 2.5-g silage sample was added to 25 mL of heat-sterilized or strained rumen fluid together with 5 g/L glucose, and incubated for 48 h at 39°C. Analysis of the incubated rumen fluid included pH measurement, enumeration of LAB, and determination of lactic acid and volatile fatty acids (VFA). The pH of the rumen fluid decreased during incubation; both heat-sterilized and strained rumen fluid contained large numbers of LAB. The heat-sterilized rumen fluid contained lactic acid in addition to VFA, whereas the strained rumen fluid contained only VFA. The results indicate that LAB pass from silage samples into the rumen fluid in vitro and survive there. Their interactions with rumen microorganisms should be studied further to understand how some silage inoculant LAB exhibit probiotic effects in dairy cattle.
Note:
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עוד תגיות
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More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
25553
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:15
Scientific Publication
The passage of lactic acid bacteria from silage into rumen fluid, in vitro studies
87
Weinberg, Z.G., Department of Food Science, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Chen, Y., Department of Food Science, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Gamburg, M., Department of Food Science, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
The passage of lactic acid bacteria from silage into rumen fluid, in vitro studies
Inoculated silages sometimes improve cattle performance, possibly because of probiotic effects of lactic acid bacteria (LAB) silage inoculants. The cause of improved animal performance following feeding with inoculated silage is unclear. One issue in studying this phenomenon is to find out whether LAB pass from silage into the rumen fluid and survive in it. The purpose of the present study was to determine whether LAB from inoculated and uninoculated silages pass into the rumen fluid in vitro. Wheat and corn silages, uninoculated or inoculated with 1 of 10 commercial silage inoculant LAB, were prepared in glass jars. After ensiling, a 2.5-g silage sample was added to 25 mL of heat-sterilized or strained rumen fluid together with 5 g/L glucose, and incubated for 48 h at 39°C. Analysis of the incubated rumen fluid included pH measurement, enumeration of LAB, and determination of lactic acid and volatile fatty acids (VFA). The pH of the rumen fluid decreased during incubation; both heat-sterilized and strained rumen fluid contained large numbers of LAB. The heat-sterilized rumen fluid contained lactic acid in addition to VFA, whereas the strained rumen fluid contained only VFA. The results indicate that LAB pass from silage samples into the rumen fluid in vitro and survive there. Their interactions with rumen microorganisms should be studied further to understand how some silage inoculant LAB exhibit probiotic effects in dairy cattle.
Scientific Publication
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