Abstract
BACKGROUND: Silage additives are marketed with the primary aim of improving the fermentation and/or aerobic stability of silage. The objective of this study was to evaluate the impact of three different essential oils (EOs; cinnamon leaf (CIN), oregano (ORE) and sweet orange (SO)) on the fermentation characteristics and stability of barley silage. Chopped whole-plant barley (Hordem vulgare L.) forage was ensiled either untreated (0 mg kg⁻¹ dry matter (DM)) or treated with CIN, ORE or SO (37.5, 75 and 120 mg kg⁻¹ DM). RESULTS: Moulds were not detected in any treatments, including the control, after 7 days of air exposure. All EOs at a concentration of 120 mg kg⁻¹ silage DM decreased (P = 0.001) yeast populations in comparison with the control during air exposure. Net gas, methane and ammonia concentrations in vitro did not differ among treatments. Changes in volatile fatty acid concentrations were small, and in situ data showed no changes in DM and neutral detergent fibre digestion rates for CIN, ORE or SO at concentrations up to 120 mg kg⁻¹ DM. CONCLUSION: The findings from this study show that a concentration of 120 mg EO kg⁻¹ DM decreased yeast counts during aerobic stability tests. However, all EO treatments had minimal effects on data from in vitro and in situ incubations.
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Claims 5
Claim · model-written summary
No moulds were detected after seven days of exposure in any treatment.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Outcome
- Moulds were not detectede0
- Qualifier
- after 7 days of air exposuree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Moulds were not detected in any treatments, including the control, after 7 days of air exposure”
t0“barley silage”
Claim · model-written summary
Cinnamon leaf oil at 120 mg/kg decreased yeast populations versus control.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- EOs at a concentration of 120 mg kg⁻¹ silage DMe0
- Outcome
- yeast populationse0
- Direction
- decreasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All EOs at a concentration of 120 mg kg⁻¹ silage DM decreased (P = 0.001) yeast populations in comparison with the control during air exposure”
t0“barley silage”
Claim · model-written summary
Net gas, methane and ammonia concentrations did not differ among treatments.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- treatmentse0
- Outcome
- Net gas, methane and ammonia concentrationse0
- Direction
- did not differe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Net gas, methane and ammonia concentrations in vitro did not differ among treatments”
t0“barley silage”
Claim · model-written summary
Volatile fatty acid concentration changes were small.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- volatile fatty acid concentrationse0
- Direction
- smalle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Changes in volatile fatty acid concentrations were small”
t0“barley silage”
Claim · model-written summary
Essential oils produced no change in DM or fibre digestion rates at doses up to 120 mg/kg.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- CIN, ORE or SO at concentrations up to 120 mg kg⁻¹ DMe0
- Outcome
- DM and neutral detergent fibre digestion ratese0
- Direction
- no changese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in situ data showed no changes in DM and neutral detergent fibre digestion rates for CIN, ORE or SO at concentrations up to 120 mg kg⁻¹ DM”
t0“barley silage”
The same questions in other papers
processing · pest · Hordeum vulgare (barley)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.