نشریه علمی - پژوهشی مرتع و آبخیزداری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استاد دانشکده منابع طبیعی،دانشگاه تهران، ایران.

2 استادیار، دانشکده منابع طبیعی، دانشگاه ارومیه، ایران.

3 عضو هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان زنجان، ایران.

4 عضو هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان قزوین، ایران.

5 دانشجوی دکتری مرتعداری، دانشکده منابع طبیعی، دانشگاه شهرکرد، ایران.

چکیده

آگاهی از کیفیت علوفه گیاهان مرتعی و شناخت ویژگی‌های ضد کیفی آنها، یکی از ملزومات اساسی در مدیریت تغذیه دام در مرتع است. به همین منظور در پژوهش حاضر، کیفیت علوفه 23 گونه مرتعی (Acantholimon flexuosum ، Agropyron trichophorum، Astragalus capax ، Astragalus demavandicus ، Astragalus micricephalus ، Astragalus vereciferom، Bromus tomentellus، Centaurea aucheri ، Centaurea virgata، Chaerophyllum macropodum، Cirsium haussknechtii ، Cousinia calocephala ، Cousinia esfandiari ، Euphorbia denticulate ، Festuca ovina، Hypericum scabrum، Nepeta heliotropifolia، Prangus ferulacea، Tanacetum polycephalum، Thymus kotschyanus، Verbascum speciosum ، Veronica orientalis و Vinca herbacea) موجود در ترکیب گیاهی مراتع کوهستانی الموت قزوین و بادامستان زنجان به عنوان مراتع معرف ناحیه رویشی ایران و تورانی، تعیین شد. برای این منظور در سه مرحله رشد (رشد رویشی، گلدهی و بذر دهی) از گونه‌های مذکور در سال 1387 نمونه‌برداری شد. سپس مقادیر شاخص‌های کیفیت علوفه در آنها تعیین گردید. برای مقایسه گونه‌ها و مراحل رشد از نظر شاخص‌های کیفیت علوفه، از تجزیه واریانس یک طرفه و به منظور مشاهده منابع تغییرات درون گروهی، از آزمون مقایسه دانکن استفاده شد. نتایج حاصل نشان داد که میانگین مقادیر پروتئین خام، ماده خشک قابل هضم و انرژی متابولیسمی گونه‌های مورد مطالعه در واحد وزن پوشش گیاهی در مراحل اولیه رشد مرتع (رشد رویشی و گلدهی)،‌ بیشتر و در مراحل پایانی رشد (مرحله بذردهی)، کمتر از حد بحرانی آن برای نیاز روزانه نگهداری واحد دامی است.

کلیدواژه‌ها

عنوان مقاله [English]

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نویسندگان [English]

  • Hossein Arzani 1
  • javad Motamedi 2
  • Farhad Aghajanlu 3
  • Saeid Rashtvand 4
  • Azin Zareii 5

1

2

3 Faculty Member of Agriculture and Natural Resources Research Center of Znjan, Zanjan

4 Faculty Member of Agriculture and Natural Resources Research Center of Ghazvin, Ghazvin

5

چکیده [English]

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کلیدواژه‌ها [English]

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