determination of chemical compositions, minerals and digestibility of lathyrus sativus l. straws for using in ruminant diets

to determine the chemical compositions, minerals and in vitro digestibility lathyrus sativusstraw during three years in shahrekord, kohrang and lordegan climates in chaharmahal & bakhtiari. this was one of the important legume straws that farmers used in ruminant winter 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 sasfor statistical program. total mean of cp, cf, ash, ee, ge for the lathyrus sativus straws were 10.3, 29.1, 9.31, 1.38 percent and 4007 kcal/kgdm respectively. total mean of ndf, adf and adl were 45.2, 29.9 and 7.09 percent. the mean of minerals includes ca, p, ma, k was 1.27, 0.2, 0.25 and 1.39 percent respectively and fe, mg, cu, and zn was 235.5, 36.3, 6.97 and 18.6 mg /kgdm respectively. in addition to effect of climates and years were significant on nutrient, minerals and digestibility. the cp percent have been enough for ruminate diets in winter but, the p percent was poor.