The quality of maize plants and maize grain silage ensiled in polyethylene foil
Adamović, Milan (AD Dragan Marković, Obrenovac (Serbia)) | Milivojčević, Dragan (AD Dragan Marković, Obrenovac (Serbia)) | Živanović, Čedomir (AD Dragan Marković, Obrenovac (Serbia)) | Bočarov-Stančić, Aleksandra (Institute for Science Application in Agriculture, Belgrade (Serbia)) | Šorić, Predrag (AD Dragan Marković, Obrenovac (Serbia))
Ensiling of maize plant and maize grain (FAO group 600) was carried out in polyethylene foils in company AD “Dragan Marković” in Obrenovac, Serbia. Diameter of the foils was 270 cm and length 65 m. Six weeks after ensiling in three polyethylene foils (1, 2 and 3) , the dry matter (DM) content of maize plant silage was optimal (30.89-32.39 %). Content of lactic acid was high (62.13 %-77.36 %), while the content of acetic acid varied from 19.27 % to 34.54 %. The pH values of these silages were similar (3.62-3.72). These silages were assessed according to DLG assessment system, and obtained between 45 and 49 points (Class I). The DM content of the fourth (4) foils maize plant silage (39.47 %) was higher than optimal and therefore affected its quality. In this silage, the content of lactic acid was lower (49.79 %), content of acetic acid increased (43.46 %), the pH value of this silage was higher (4.10) and it obtained 37 points (Class II). In two (1 and 2) polyethylene foils in which wet maize grain coarse meal was ensiled, the DM content of the silage was optimal (68.69 % and 74.38 %). The content of lactic acid was rather high (71.13 % and 72.91 %), the amount of acetic acid was much lower (27.09 % and 28.87 %), the pH values were 4.06 and 4.30 and these silages obtained 49 and 50 points (Class I). No losses were detected, by reason damage, in silages prepared in polyethylene foils.
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