Forage turnip (Brassica rapa) harvested in different phases of vegetative stage andensiled with the additives of molasses and barley and the effects of additives on silagequality, in vitro digestibility, and energy content

This study was conducted to determine the silage quality, in vitro digestibility and energy content of forage turnip (Brassica rapa) ensiled with molasses or ground barley. Forage harvested at three different stages: beginning, middle end flowering period, it no additive (control), 5% 4% In trial, pH, nutrient contents, ammonia nitrogen (NH$_{3}$-N) volatile fatty acid (VFA) Fleig scores, were determined. It observed that effect vegetative stage on difference between groups significant (p < 0.05). Accordingly, progression stage, contents dry matter (DM), organic (OM), ether extract (EE), neutral detergent fiber (NDF) (ADF) showed an increase while a decrease crude protein (CP). The effects additives found be except for CP parameter Molasses barley addition silages increased DM, OM EE reduced levels NDF ADF. With lactic (LA) acetic (AA) values decreased pH scores increased. insignificant all parameters AA scores. As progressed, (DMD), (OMD), digestible (DE), metabolic (ME) net lactation (NEL) significantly barley, compared control, resulted DMD, OMD, DE, ME, NE$_{L}$ conclusion, parallel decreased, increasing additives, obtained high-quality as alternative quality roughage ruminant feeding.