عنوان مقاله [English]
The Iran is one of the most important habitats of Astragalus growth in the world. Astragalus spp are useful aspect forage, medicinal, industrial and soil conservation. In this study were performed quantity factors by measurement vegetation parameters (canopy cover, production, density and height) and quality factors by measurement of crude protein, crude fiber, acid detergent fiber, dry matter digestibility and metabolic energy. Data were analyzed by using spss software package and means comparison was performed by Duncan test. Results showed that the species of Astragalus podolobus, Astragalus lilacinus, Astragalus sumbari, Astragalus rawlinsianus and Astragalus jolderensis with the best quantitative and qualitative factors such as: production (71 to 1049 kg/ha), crude protein (12.5 to19.2 percent in flowering period), metabolic energy (5.9 to 8.6 MJ/kg) and high palatability was introduced. So this species was offered to increase quality and quantity of forage in adjacent regions of Golestan Natural Park, similar rangelands of Golestan province and the country.