بررسی ارزش تغذیه‏ای و تجزیه‌پذیری سیلاژ سورگوم از علوفه چین اول و دوم

In order to investigate effect of cutting on chemical composition and degradability parameters of sorghum silage an experiment was don. Sorghum forage was used from first and second cutting for ensiling. Ensiling was done in plastic buckets (2.5 kg weight) for 80 days. The result showed that dry matter, neutral and acid detergent fiber in silage of second cutting was higher (P<0/01) and crude protein was lower. Ash in silage of first cut was higher (P<0/01). The ash of silage from second cutting was significantly lower (P<0/01).  pH, N-NH3 and water soluble carbohydate in silage of first cut was higher (P<0/01). Rapidly degradable fraction of dry matter, crude protein and NDF in silage of first cut was higher (P<0/01). Based on the results of this study silage of first cut have a higher nutritional value in contrast with silage of second cut.