Abstract
The effect of 14 microbial inoculants on the fermentation and nutritive value of alfalfa silages was studied under laboratory conditions. The first cut (477 g of dry matter/kg) and second cut (393 g of dry matter/kg) of a second-year alfalfa stand were ensiled in 2 trials. In both trials alfalfa was harvested with standard field equipment. All inoculants were applied at 1.0 x 10(6) cfu/g of crop. Uninoculated silages served as controls. After inoculants were added, the chopped forages were ensiled in 1.0- and 0.5-L anaerobic glass jars, respectively, at a density of 500 g/L. Each trial had 15 treatments (uninoculated control and 14 inoculants), with 4 silos per treatment. Silos were stored for a minimum of 30 d at room temperature (approximately 22 degrees C). In first-cut silage, all inoculants but one reduced pH relative to the uninoculated control, and all but 2 of the homofermentative strains shifted fermentation toward lactic acid. In second-cut silage, the epiphytic lactic acid bacterial population was 2.7 x 10(7) cfu/g, and only commercial inoculants produced significant shifts in fermentation. Overall, microbial inoculants generally had a positive effect on alfalfa silage characteristics in terms of lower pH and shifting fermentation toward lactic acid with homofermentative lactic acid bacteria or toward acetic acid with heterofermentative lactic acid bacteria, Lactobacillus buchneri. These effects were stronger in the commercial products tested. In spite of the positive effects on silage fermentation, 48-h in vitro true DM digestibility was not improved by inoculation with lactic acid bacteria.
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Claims 9
Claim · model-written summary
All but one inoculant reduced pH in first-cut silage.
- Taxon
- Alfalfa
Medicago sativat0 - Organ / stage
- first-cut silagee0
- Treatment
- all inoculants but onee0
- Outcome
- pHe0
- Direction
- reducede0
- Comparator
- uninoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In first-cut silage, all inoculants but one reduced pH relative to the uninoculated control, and all but 2 of the homofermentative strains shifted fermentation toward lactic acid.”
t0“Alfalfa”
Claim · model-written summary
All but two homofermentative strains shifted fermentation toward lactic acid.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- homofermentative strainse0
- Outcome
- fermentation toward lactic acide0
- Direction
- shiftede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In first-cut silage, all inoculants but one reduced pH relative to the uninoculated control, and all but 2 of the homofermentative strains shifted fermentation toward lactic acid.”
t0“Alfalfa”
Claim · model-written summary
Second-cut silage had an epiphytic lactic acid bacterial population of 2.7 x 10(7) cfu/g.
- Taxon
- AlfalfaMedicago sativat0
- Outcome
- epiphytic lactic acid bacterial populatione0
- Value
- 2.7 x 10(7) cfu/ge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In second-cut silage, the epiphytic lactic acid bacterial population was 2.7 x 10(7) cfu/g, and only commercial inoculants produced significant shifts in fermentation.”
t0“Alfalfa”
Claim · model-written summary
Only commercial inoculants significantly shifted second-cut silage fermentation.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- commercial inoculantse0
- Outcome
- shifts in fermentatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In second-cut silage, the epiphytic lactic acid bacterial population was 2.7 x 10(7) cfu/g, and only commercial inoculants produced significant shifts in fermentation.”
t0“Alfalfa”
Claim · model-written summary
Microbial inoculants generally lowered alfalfa silage pH.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- microbial inoculantse0
- Outcome
- pHe0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overall, microbial inoculants generally had a positive effect on alfalfa silage characteristics in terms of lower pH and shifting fermentation toward lactic acid with homofermentative lactic acid bacteria or toward acetic acid with heterofermentative lactic acid bacteria, Lactobacillus buchneri.”
Claim · model-written summary
Homofermentative lactic acid bacteria shifted fermentation toward lactic acid.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- homofermentative lactic acid bacteriae0
- Outcome
- fermentation toward lactic acide0
- Direction
- shiftinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overall, microbial inoculants generally had a positive effect on alfalfa silage characteristics in terms of lower pH and shifting fermentation toward lactic acid with homofermentative lactic acid bacteria or toward acetic acid with heterofermentative lactic acid bacteria, Lactobacillus buchneri.”
Claim · model-written summary
Lactobacillus buchneri shifted fermentation toward acetic acid.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- heterofermentative lactic acid bacteria, Lactobacillus buchnerie0
- Outcome
- acetic acide0
- Direction
- towarde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overall, microbial inoculants generally had a positive effect on alfalfa silage characteristics in terms of lower pH and shifting fermentation toward lactic acid with homofermentative lactic acid bacteria or toward acetic acid with heterofermentative lactic acid bacteria, Lactobacillus buchneri.”
Claim · model-written summary
Fermentation effects were stronger for commercial products.
- Taxon
- AlfalfaMedicago sativat0
- Material
- commercial productse0
- Outcome
- effectse0
- Direction
- strongere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These effects were stronger in the commercial products tested.”
t0“Alfalfa”
Claim · model-written summary
Lactic acid bacterial inoculation did not improve 48-h in vitro true DM digestibility.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- inoculation with lactic acid bacteriae0
- Outcome
- 48-h in vitro true DM digestibilitye0
- Direction
- not improvede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“48-h in vitro true DM digestibility was not improved by inoculation with lactic acid bacteria.”
t0“Alfalfa”
The same questions in other papers
inoculation · soil: chemistry · Medicago sativa (alfalfa)Positive and negative results
41 papers in the same direction as this paper · 2 in the opposite direction
- positive
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See all 44 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.