To determine the chemical compositions, minerals and in vitro digestibility of Vetch forage in Shahrekord (cool and dry), Kohrang (cool and wet) and Lordegan (warm and wet) climates in Chaharmahal & Bakhtiari province. This was one of the important legume forage that farmers used ruminant diets in south west of Iran. This Legume straw gathered of different climates for three years. All samples were chemically analyzed for DM, CP, CF, ASH, EE, NDF, ADF, ADL , Ca, P, Ma , K, Fe, Mg, Cu, Zn, and in-vitro digestibility include DMD , OMD and DOMD were determined in-vitro and energy was determined using of calorie meter bomb. All of the data classification with Excel software and used of SAS for statistical program. Total mean of CF, Ash, EE, GE for the Vetch forage straws were not under effect of climates but CP in cool and dry climate was significant higher than warm and wet climate(P<0.05). Total mean of NDF, ADF and ADL were not under effect of climates but DMD, OMD and DOMD in warm and wet climate was significant higher than cool and dry and cool and wet climates (P<0.05). The mean of minerals includes Ca, P, Ma, K and Fe were not under effect of climates but Mn in warm and wet climate was significant higher than cool and dry and cool and wet climates(P<0.05). In addition to effect of climates were significant on chemical nutrient, minerals and digestibility of Vetch forage. |