Utilization of molasse by-products as silage additives
2001
Biro, D. | Halo, M. | Vavrisinova, K. | Strapak, P. | Debreceni, O. (Slovenska Polnohospodarska Univ., Nitra (Slovak Republic). Katedra Vyzivy)
Trials were conducted to verify the influence of Leoprotein 45 on the silage fermentation process and the nutritive value of maize silage. Leoprotein 45 is a concentrate of fermentation by-products of molasse (vinasse) arising from manufacturing alcohol and citric acid. Dry matter of concentrate contained 307.8 g/kg of crude proteins of which 76% were non-protein nitrogen. There was a high content of ash, 271.3 g/kg, in which dominated potassium, 110.9 g/kg. The nutrition value can be characterized by PDIN 181.3 g/kg, PDIE 77.6 g/kg, NEL 5.53 MJ/kg and NEV 5.24 MJ/kg dry matter. The use of 3, 5 and 10% of Leoprotein 45 respectively in maize silage significantly increased crude protein content by 7.0 to 28.3 g/kg (11-43%). The high content of ash in Leoprotein 45 had no adverse effect on fermentation processes in silage. An increased butter capacity of the additive is compensated, to a certain degree, by the content of organic acids, of which Leoprotein 45 has most lactic acid, 115.7 g/kg. Fermentation loses of dry matter were increased by increasing Leoprotein 45 doses from 17.2 g up to 32.8 g/kg. The highest dose of this additive caused a significant decrease of 35.2 g/kg in fibre content of silages. With the doses of 5 and 10% Leoprotein 45, respectively a lower content of lactic acid and a higher content of acetic acid were observed. Also, pH value increased from 3.91 to 4.16 due to increasing the doses of additive. There was a significant rise of 4.2 g to 17.1 g/kg in the PDIN nitrogen value. The energetic value for maize silages was not influenced by the additive and varied from 6.2 MJ to 6.35 MJ. Leoprotein 45 in the doses of 5 and 10%, respectively can be used as a silage additive for increasing crude protein in glycide silages. Maize silages have a higher content of lactic and acetic acids. Higher proportion of acetic acid of 27.2-28.2% support the aerobic stability of silages
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