Aeroibc stability of maize silage with the addition of mixture of hetero- and homofermentative lactic acid bacteria | Aerobna obstojnost koruzne silaze z dodatkom mesanice hetero- in homofermentativnih mlecnokislinskih bakterij
2005
Verbic, J., Agricultural Inst. of Slovenia, Ljubljana (Slovenia) | Znidarsic, T. | Babnik, D. | Gregoric, A. | Velikonja Bolta, S.
Maize without additive (C) and with the combination of 1x10 Lactobacillus buchneri and 1x10 Lactobacillus plantarum and Enterococcus faecium (LAB) was ensiled in experimental (37,6 l) and laboratory (4,8 l) silos. The silos were opened after 81 days. With the aim of mimicking the loose silage after feed-out, aerobic stability of silage from laboratory silos was measured in insulated incubators which allowed air flow through the silage. To mimic the packed silage in the silo, aerobic stability was measured 12 cm below the surface of silage in experimental silos. Aerobic stability was expressed as a time needed to increase the silage in experimental silos. Aerobic stability was expressed as a time needed to increase the silage temperature 3 °C above the ambient temperature (Delta t3). In comparison with C, the LAB silage had higher concentration of acetic acid (24,2 vs. 15,0 g/kg dry matter, P0,01), lower concentration of total sugars (8,4 vs. 16,0 g/kg dry matter, P0,05) and lower concentration of lactic acid (56,6 vs. 64,1 g/kg dry matter, P0,01). Aerobic stability (Delta t3) of loose silage was for 20 h better in LAB than in C (12 vs. 32 h, P0,01). The addition of lactic acid bacteria also improved the stability of packed silage (246 vs. 210 h), however, the difference was not significant (P0,01). It was concluded that aerobic stability of maize silage can be improved by use of efficient additives which contain the mixture of hetero- and homofermentative lactic acid bacteria.
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