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THE QUALITY OF MAIZE SILAGES FROM WEST REGION OF SLOVAKIA

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Author(s): Miroslav Juráček | Daniel Bíro | Milan Šimko | Branislav Gálik | Michal ROLINEC

Journal: Journal of Central European Agriculture
ISSN 1332-9049

Volume: 13;
Issue: 4;
Start page: 695;
Date: 2012;
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Keywords: maize | silage | nutritive value | fermentation | quality

ABSTRACT
The aim of this work was to determine the quality of maize silages from Western Slovak Region analyzed in 2009 and 2010 on the Department of animal nutrition, Faculty of agrobiology and food resources, Slovak university of agriculture in Nitra, Slovakia. Maize silages were evaluated on the base of nutritional value, the result of fermentation process and silage quality according to Regulation of the Government of Slovak Republic no. 439/2006, appendix no.7, part C – Silage. We found in maize silages the average dry matter content 357.87 g.kg-1 (2009) and 340.00 g.kg-1 (2010) while only in 2010 samples had got 15.4 % of dry matter content below 300 g.kg-1. Content of crude fiber was lower than 260 g.kg-1 of dry matter in all samples. Higher content of acid detergent fiber and neutral detergent fiber had maize silages from 2010. The average value of net energy of lactation was 6.32 MJ.kg-1 of dry matter (2009) and 6.27 MJ.kg-1 of dry matter (2010). Only in one sample from 2010 we found a lower lactic acid content than 10 g.kg-1 of original matter. Content of acetic acid was lower in silages from 2009 (24.33 g.kg-1 of dry matter) in comparison with silages from 2010 (28.92 g.kg-1 of dry matter). Undesirable butyric acid was not found in maize silages. The value of pH fluctuated from 3.52 to 3.80 (2009) and from 3.58 to 4.14 (2010). Only 17 % of evaluated samples satisfied the criteria for silage of I. class in 2009 and 23 % in 2010 mainly because of the higher acetic acid content.
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