The effect of biological additive on nutrient composition of grass silage

Róbert Herkeľ, Pavel Struhár, Daniel Bíro, Miroslav Juráček, Milan Šimko, Branislav Gálik, Michal Rolinec, Ondrej Hanušovský


DOI: 10.15414/afz.2015.18.04.106–109

Received 7. July 2015 ǀ Accepted 28. August 2015 ǀ Available online 7. December 2015

The aim of the study was to analyze the effect of biological additive on nutrient composition of grass silages. The experiment
was realized in practical conditions on the farm RD Klenovec in 2013. Grass mass of permanent grassland was ensiled in
silage bags. Laboratory analysis of silage samples were carried out at 8 weeks of fermentation, 6 and 12 months of storage.
Into grass silage of experimental group was added biological additive, consisted of mixture of homofermentative and
heterofermentative lactic acid bacteria. Inoculant included strains Lactobacillus brevis and Lactobacillus plantarum. There
were not found significant differences (P >0.05) between the control and experimental group in contents of nutrients in
individual analysis of silage samples. We found higher values of dry matter, crude protein and organic matter, and lower
content of ash after supplementation of biological additive in all analyzed samples. Tendency of (P >0.05) a higher content
of crude fiber was found after 8 weeks, 6 months of storage and fat after 12 months of storage. There were found significant
(P <0.05) differences in contents of NEL after 8 weeks and 12 months of storage and NEG only after 12 months of storage
between control and experimental samples of silage.

Keywords: grass silage, fermentation, inoculant, nutrients

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