The influence of bacterial inoculants on aerobic stability of silage | Vpliv bakterijskih cepiv na aerobno stabilnost silaže

English. The effect of bacterial inoculants on aerobic stability of silage was studied on the basis of statistical processing of data from literature. When forage had higher content of dry matter aerobic stability of grass silage, inoculated with homofermentative lactic acid bacteria, was lower than in silage without additives. When forage had low dry matter content, homofermentative lactic acid bacteria had a favourable effect on aerobic stability and quality of grass silage. Inoculation of maize, sorghum and cereals improved the quality but impaired the aerobic stability of silages. An exception was inoculant of Lactobacillus plantarum and Enterococcus faecium that slightly improved aerobic stability of cereals silage. Heterofermentative lactic acid bacteria Lactobacillus buchneri improved the quality and aerobic stability of maize, sorghum and cereal silages and was unaffected in grass silage. Additives which contained propionic acid bacteria have no effect on the fermentation of plants which are inherently unstable at aerobic exposure.

Slovenian. S statistično obdelavo objavljenih podatkov smo ugotavljali vpliv bakterijskih cepiv na aerobno stabilnost silaže. V silirani krmi s travinja z večjo vsebnostjo suhe snovi je bila aerobna stabilnost slabša ob dodatku cepiva, ki je vsebovalo homofermentativne mlečnokislinske bakterije, v primerjavi s silažo brez dodatka. Ob nizki vsebnosti sušine v silirani krmi s travinja je cepivo pri siliranju krme s travinja ugodno vplivalo tako na kakovost kot na aerobno stabilnost. Pri cepljenju koruze, sirka in žit se je kakovost silaž izboljšala, aerobna stabilnost pa je bila slabša. Izjema je bilo cepivo, ki je vsebovalo Lactobacillus plantarum in Enterococcus faecium, kjer se je aerobna stabilnost siliranih žit rahlo izboljšala. Heterofermentativna mlečnokislinska bakterija Lactobacillus buchneri je izboljšala tako kakovost kot tudi aerobno stabilnost koruzne silaže, siliranega sirka in siliranih žit ter se pokazala kot neučinkovita pri siliranju krme s travinja. Dodatek propionskokislinskih bakterij ni učinkoval na fermentacijo siliranih rastlin, ki se hitro aerobno kvarijo.