A meta‐analysis on the effectiveness of homofermentative and heterofermentative lactic acid bacteria for corn silage

Aims This meta‐analysis aims to assess the effect of lactic acid bacteria (LAB) inoculation on fermentation parameters, microbiological composition and aerobic stability of corn silage. Methods and Results Databases (PubMed, ScienceDirect and Scopus) were searched from 1980 to 2017. The criteria for...

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Bibliographic Details
Published in:Journal of applied microbiology 2018-12, Vol.125 (6), p.1655-1669
Main Authors: Blajman, J.E., Páez, R.B., Vinderola, C.G., Lingua, M.S., Signorini, M.L.
Format: Article
Language:English
Subjects:
Acetic acid
Ammonia
Bacteria
Carbohydrates
Corn
Corn silage
Fermentation
inoculant
Inoculation
Lactic acid
Lactic acid bacteria
Meta-analysis
Molds
Nitrogen
Propionic acid
Silage
Stability
Yeasts
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Summary:Aims This meta‐analysis aims to assess the effect of lactic acid bacteria (LAB) inoculation on fermentation parameters, microbiological composition and aerobic stability of corn silage. Methods and Results Databases (PubMed, ScienceDirect and Scopus) were searched from 1980 to 2017. The criteria for inclusion were: randomized and controlled experiments using corn silage and published in peer‐reviewed journals. The meta‐analysis showed that LAB supplementation increased pH, acetate and propionate concentrations, and decreased acid detergent fibre, water‐soluble carbohydrates and ammoniacal nitrogen (NH3‐N) compared to controls in the pooled raw mean difference random effect model. In addition, inoculation reduced counts of yeasts and moulds, increased LAB counts and markedly improved aerobic stability in corn silage. However, results indicated that the effect of inoculants may differ depending on the administration of homofermentative or heterofermentative LAB. Conclusions For the development of functional bacterial inoculants, both types of LAB should be used. Significance and Impact of the Study To our knowledge, this is the first meta‐analysis to compare the application of homofermentative and heterofermentative LAB for corn silage.
ISSN:1364-5072
1365-2672
DOI:10.1111/jam.14084