Evaluation of mineral contents of the feedstuffs in GOLPAYEGAN Areaý

In this research study five major sorrces of livestock feeds used in Golpaygan region were studied. The feed included alfalfa ( seconed and third cut ) , saianfoin ( first , seconed and third cut ) , wheat straw, barley straw and barley grain which were studied in a Stratified Random Sampling Method. The samples were analysed by laboratory standard for chemical analysis of the element including:calcium(Ca),phosphorus(P),magnesium(Mg), potassium(K), chloride (Cl), zinc (Zn), copper (Cu), manganese (Mn) AND iron ( Fe). The result in alfalfa showed the concentration of1.89, 0.23, 0.47,2.05 and 0.77% DM by mean for Ca, P, Mg, K,and Cl respectively. In the plant mean concentration for elements of ZN, Cu, Mn and Fe were 28.92, 11.8, 38.66, 269.58 mg/kg DM, respectively. As the plant matured, concentration of Ca increased while,the concentration of other element decreased (P 0.05). At early vegetetive stage, third cut, showed higher concentration for P (P 0.05 ) K and Zn ( P0.01 ) than seconed cut. At early bloom stage increased cotent of P and K ( P0.05 ) and decreased cotent of Mg in third cut, than second cut (P 0.01 ). At the stage of midbloom, third cut showed higher concentration of Ca and lower cotent of Mg than second cut ( P0.01 ). At the full bloom stage, thired cut showed low Mg and high concentration ( P 0.05 ). As well.In overall, mean values of 1.36, 0.22, 0.49, 1.58 and 0.48 % DM determined for Ca, P, Mg, K and Cl in sainfoin and the values of 25.94, 10.76, 46.8 and 236.55 mg/kg DM for Zn, Cu, Mn and Fe elements. Cocentration of P and Cl was low at full bloom stage of sainfoin ( p0.05), however, therer was not significant differences for other elements (P0.05). Seconed cut showed higher concentration of Ca, P, Cu ( P0.05) and Zn (P0.01) than first cut, at midbloom stage. At the same stage, third cut showed lower Mg (P0.05) and higher Mn (P,0.01) concentration compared to second cut.Comparison among the cut showed that at the stage of full bloom, higher concentration of Ca, K, Cu, Fe (p0.01) and Mn (P0.05) than first cut . At the same stage third cut higher values were also determined for Ca, K, Mn, Fe (P0.01), P, Cl, Zn and Cu (P0.05) than first cut. Third cut or full bloom stage showed higher concentration of Cu (P0.05), Mn (P0.01) and lower Mg contant (P0.05) than second cut. Mean values of 0.35, 0.06, 0.15, 2.07 and 0.75 % DM determined for Ca, P, Mg, K and Cl in in wheat straw, 0.57, 0.1, 0.25, 2.16 and 0.98 in barley straw, 0.12, 0.24, 0.17, 0.6 and 0.2 in barley grain respectively. In the feeds values of 10.87, 6.84, 48.8, 277.69 mg/kg DM calculated for Zn, Cu, Mn and Fe in wheat straw. 12.19, 5.35, 44.52, 386.46 in barley straw and 28.91, 4.56, 28.07, and 211.8 in barley grain respectively