Faculty of Agrobiotechnical Sciences Osijek and Agricultural Institute Osijek
Abstract
This study was carried out to determine the effects of actic acid bacterial inoculant on the fermentation and aerobic stability of sunflower silages. Sunflower was harvested at the milk stage. Inoculant-1174 (Pioneer®,USA) was used as homofermentative lactic acid bacterial inoculant. Inoculant was applied 6.00 log10 cfu/g silage levels. Silages with no additive served as controls. After treatment, the chopped sunflower was ensiled in the PVC type laboratory silos. Three silos for each group were sampled for chemical and microbiological analysis on days 2, 4, 7, 14, 21, 28 and 56 after ensiling. At the end of the ensiling period, all silages were subjected to an aerobic stability test for 14 days. Neither inoculant improved the fermentation parameters of sunflower silages. At the end of the ensiling period, inoculant increased lactic acid bacteria (LAB) and decreased yeast and mould numbers of silages. Inoculant treatment did not affect aerobic stability of silages.Ovo istraživanje imalo je za cilj odrediti utjecaj inokulata mliječno kiselih bakterija na fermentaciju i aerobnu stabilnost silaža suncokreta. Žetva suncokreta obavljena je u mliječnoj zriobi. Inokulat-1174 (PioneerR, USA) koristio se kao homofermentativni inokulat mliječno kiselih bakterija. Inokulat primijenjen je na razinama 6.00 log 10 cfu/g. Kontrole su bile silaže bez aditiva. Nakon tretiranja, sjeckani je suncokret siliran u PVC laboratorijskim silosima. Uzorci su uzimani iz 3 silosa za svaku grupu te kemijski i mikrobiološki analizirani 2., 4., 7., 14., 21., 28. i 56. dana nakon siliranja. Na kraju siliranja sve su silaže testirane na aerobnu stabilnost u periodu od 14 dana. Inokulat nije poboljšao fermentacijske parametre silaža suncokreta. Na kraju procesa siliranja inokulat je povećao mliječno kisele bakterije (LAB), a smanjio kvasac i plijesan u silažama. Postupak inokulatom nije utjecao na aerobnu stabilnost silaža
