The chemical composition and nutritive value of grass silages prepared with no additive or with the application of additives containing either Lactobacillus plantarum or formic acid
Abstract
Abstract A mixture of perennial and hybrid ryegrasses(234 g DM kg‐1) was forage harvested and ensiled after a 24‐h wilt in good ensiling conditions in 2‐t capacity silos with no additive application (control) or with the application of either Lactobacillus plantarum, 4 × 106 (g fresh weight of grass)‐1, or of 31 formic acid t‐1. Sufficient 2‐kg capacity laboratory silos were also filled with grass to monitor the changes in chemical composition of the ensiled grass with time. In laboratory silos, inoculation with L. plantarum resulted in a more rapid fall in silage pH (p < 0.001) and a more rapid production of lactic acid (P < 0.001) than in the control silage. At the end of the storage period (laboratory silos, 80 d; 2‐t silos, 200‐300 d), the inoculated silos had lower pH (p ammonia‐N (g kg N1) and acetic acid contents (p < 0.01) and higher water soluble carbohydrate (WSC), lactic acid (P<00.1) and ethanol (p < 0.05) contents than the control silage. The formic acid‐treated silage had significantly lower contents of ammonia‐N (g kg N‐1, p < 0.05), acetic and tactic acids (p<0.01) and higher contents of WSC and ethanol (p < 0.01) than the control silage. When fed to wether sheep, the digestibilities of DM, organic matter and gross energy were not altered by additive treatment. The digestibility of modified acid‐detergent fibre was lower for both the inoculated (P < 0.01) and formic acid‐treated silages (p < 0.05). However, N retention was improved (p < 0.05) by both additive treatments. Silage intake was improved (p < 0.01) by additive treatment from 53.4 (control) to 58.0 (inoculated) and 60.4 (formic acid) g DM (kg live weight0.75)‐1d‐1.
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Sheep fed grass silage inoculated with LAB showed improved nitrogen retention due to improved microbial N synthesis in the rumen.
“Rooke et al. (1988) also found improvements in N retention due to improved microbial N synthesis within the rumen of sheep fed grass silage inoculated with LAB.”
From Effects of feeding corn silage inoculated with microbial additives on the ruminal fermentation, microbial protein yield, and growth performance of lambs1 (2014) · cites this paper as Rooke et al. (1988)
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- Authors
- ROOKE, J. A., MAYA, F. M., ARNOLD, J. A., & ARMSTRONG, D. G.
- Affiliations
- Newcastle University (GB)
- Corresponding author
- ROOKE, J. A.
- Venue
- Grass and Forage Science
- Publisher
- Wiley
- Published
- 1988-03
- Volume
- 43
- Issue
- 1
- Pages
- 87-95
- ISSN
- 0142-5242 (ISSN-L)
- 1365-2494
- OpenAlex
- W2143182364
- Cited by
- 81
- References
- 19
- Citations by year
- 2025: 1 · 2023: 1 · 2020: 2 · 2017: 1 · 2015: 1 · 2014: 1 · 2013: 2 · 2012: 3
- FWCI
- 11.50
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Grass and Forage Science (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Ruminant Nutrition and Digestive Physiology
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
- Life Sciences › Agricultural and Biological Sciences › Food Science › Food and Agricultural Sciences
- Keywords
- silage, silage additives, Lactobacillus plantarum, formic acid, ryegrass, silage inoculation, silage pH, lactic acid production, ammonia-N, water-soluble carbohydrates, ethanol, nitrogen retention, sheep digestibility, silage intake, nutritional value, silage chemical composition, acid detergent fiber, acetic acid, propionic acid
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