Naslov
The influence of lactic acid bacteria additive on the level of residual water-soluble carbohydrates in corn silage

Autori
Duvnjak, Marija ; Kiš, Goran ; Kljak, Kristina ; Grbeša, Darko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Skup
6th Congres of European Microbiologists

Mjesto i datum
Maastricht, Nizozemska, 07.06.2015. - 11.06.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
corn silage; lactic acid bacteria; water-soluble carbohydrates

Sažetak
Background Ensilaging is a high moisture crop conservation method based on the fermentation of water soluble carbohydrates (WSC) guided by epiphytic microflora, specifically by lactic acid bacteria (LAB). LAB additives (inoculants) in ensilaging are used for promotion of optimal fermentation and rapid pH drop thus improving dominant nutrients preservation. However, the impact of inoculation on the level of residual WSC, which in high levels may result in silages aerobic deterioration, is not clear. Objectives During the present study, the application of LAB inoculant on residual WSC was investigated. Methods The three different yellow corn hybrid (Bc 418b, Bc 678 and Bc exp 6) produced in the same production conditions (31, 01 – 38, 52% DM) were ensiled in five replications in laboratory scale silos with and without Sil-All®4×4 LAB inoculant in a concentration 1x106 CFU/g of fresh material. The silages were sampled on the 21st and the 60th day. The contents of lactic acid, WSC and pH were monitored. Conclusions The analyses showed that the inoculated silages had a significant increase (P<0, 05) of lactic acid concentrations (g/kg DM basic) both on the 21st (31, 45) and the 60th day (33, 28) in contrast to silages without inoculant (21st 22, 49 ; 60th 26, 38). The same pattern was observed with pH. At the end of ensiling the difference in WSC content between silage with (8, 63 g/kg DM) and without inoculant (7, 39 g/kg DM) was not statistically significant (P>0, 05). Inoculation of silages with Sil-All®4×4 stimulates lactic acid production and rapid pH drop whereas has no influence on the level of residual water-soluble carbohydrates.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija), Biotehnologija

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