[Effect of urea addition with molasses or sodium hydroxide on ensiled corn stover characteristics]
1989
El-Yassin, F. (Aleppo Univ. (Syria). Faculty of Agriculture)
Chopped corn-stover was ensiled in laboratory siles (feed container) double lined with polyethylene bags. Addition of 0.5% urea with or without 1%, 1.5% and 2% NaOH, Molasses were applied. Dry matter of the corn-stover used in this study was suitable for silage making (32.41%). Pre-ensiling addition of 0.5% urea increased crude protein content of silages by 4.09 percentage units. The treatment with NaOH decreased ether extract and increased ash content of silages (P0.1). The ash content increase observed in this trial was higher than would be anticipated with the addition of 1-2% NaOH. The pH of ensiled corn-stover without additives was 4.46. The pH values for silages containing 3%, 4% and 5% molasses were 4.13, 4.01 and 3.95% respectively. NaOH treated silages had the highest pH values (P0.1). Dry matter digestibility (IVDMD) and D-value were significantly higher for silages treated with NaOH. Addition of molasses increased lactic acid and decreased acetic acid (P0.1). Lactic acid was lowest and acetic acid was highest for NaOH treated silages (P0.1). Valeric acid was found only in the NaOH treated silages
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