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A meta‐analysis on the effectiveness of homofermentative and heterofermentative lactic acid bacteria for corn silage
Author(s) -
Blajman J.E.,
Páez R.B.,
Vinderola C.G.,
Lingua M.S.,
Signorini M.L.
Publication year - 2018
Publication title -
journal of applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 1364-5072
DOI - 10.1111/jam.14084
Subject(s) - silage , lactic acid , bacteria , fermentation , food science , biology , inoculation , microbiology and biotechnology , horticulture , genetics
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 ( NH 3 ‐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.