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Information Journal Paper

Title

CHEMICAL COMPOSITION AND NUTRITVE VALUE OF (ASTRAGALUS BREVIDENS FREYN AND SINT) AND (ASTRAGALUS MASENDERANUS BUNGE)

Author(s)

MELATI F. | NAGHDI N. | VALIZADEH R.

Pages

  147-156

Abstract

 In this study, the nutritive value of AS. brevidens and AS. masenderanus were analyzed in 3 different morphological growth stages (vegetative, flowering, seeding) through chemical composition, in vitro GAS PRODUCTION and IN VITRO DRY MATTER DIGESTIBILITY determination. ASTRAGALUS BREVIDENS and ASTRAGALUS MASENDERANUS are the typical plants in khorasan ranglands that have high palatability and high biomass yeild.Gas production and degradation characteristics of plant's dry matter were measured during 120 h incubation in different growth stages. The results indicated that the nutritive value of the plants depended on their growth stages. In vegetative stage, protein content of leaf in AS. brevidens and AS. masenderanus were 16.99% and 20.77% respectively; as it has been accepted with the growth advancement, nutritive value of these plants decreased (p<0.05). According to GAS PRODUCTION content, DIGESTIBLE ORGANIC MATTER (OMD) and METABOLIZABLE ENERGY (ME) content were about 46.97-60.50% and 6.93-8.91 MJ/kg DM for As. brevidens and 45.52-57.61% and 6.71-8.41 MJ/kg DM for As. masenderanus. The IN VITRO DRY MATTER DIGESTIBILITY (IVDMD) were 30.07-61 for As. brevidens and 28.60-61.05 for As. masenderanus. Considering, high digestibility and crude protein content of these forages, As. brevidens and As. masenderanus can be introduced as suitable forage crops.However, more studies need to identify the presence of anti-nutrition and phytochemical composition in these plants.

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