تأثیر روش ذخیره کردن تفاله دانه انار بر ترکیب شیمیایی و فراسنجه های تجزیه پذیری شکمبه ای آن

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد تغذیه دام، گروه علوم دامی، دانشکده کشاورزی، دانشگاه بیرجند، بیرجند - ایران

2 دانشیار گروه علوم دامی، دانشکده کشاورزی، دانشگاه بیرجند، بیرجند - ایران

چکیده

دانه انار (حاوی 5/47 درصد ماده خشک) به مدت 70 روز در سطل­های پلاستیکی سه کیلویی سیلو شد و سپس ترکیب شیمیایی، غلظت ترکیبات فنلی و فراسنجه­های تجزیه­پذیری شکمبه­ای ماده خشک و نیز تجزیه­پذیری شکمبه­ای و پس از شکمبه­ای ماده خشک دانه سیلو شده و نیز دانه خشک شده تعیین گردید. نتایج نشان داد سیلو کردن سبب کاهش معنی­دار میزان کل ترکیبات فنلی، تانن کل، اسید گالیک، اسید تانیک، پونیکالین و پونیکالاژین A شد اما غلظت تانن­های متراکم، اسید الاژیک و پونیکالاژین B تحت تأثیر روش ذخیره­سازی قرار نگرفت. فراسنجه­های تجزیه­پذیری شکمبه­ای ماده خشک، بخش سریع تجزیه، کند تجزیه و تجزیه­پذیری مؤثر در نرخ عبورهای 02/0، 05/0 و 08/0 در ساعت تحت تأثیر روش ذخیره­سازی قرار نگرفت. سیلو کردن سبب افزایش معنی­دار گوارش­پذیری شکمبه­ای ماده خشک و گوارش­پذیری ماده خشک در کل دستگاه گوارش و کاهش معنی­دار ثابت نرخ تجزیه ماده خشک و گوارش­پذیری پس از شکمبه­ای ماده خشک گردید (05/0P<). براساس نتایج این تحقیق سیلو کردن تفاله دانه انار ارزش غذایی این پسماند خوراکی را بهبود می­بخشد.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of drying and ensiling of pomegranate seed pulp on its chemical composition and ruminal degradability parameters

نویسندگان [English]

  • F. Khosravi 1
  • M. H. Fathi Nasri 2
1 M.Sc. Student, Department of Animal Science, Faculty of Agriculture, University of Birjand, Birjand - Iran
2 Associate Professor, Department of Animal Science, Faculty of Agriculture, University of Birjand, Birjand - Iran (Corresponding Author*)
چکیده [English]

The fresh Pomegranate seed pulp (PSP, containing 47.5 percent dry matter) was ensiled within plastic buckets (three kg weight) for 70 days and then chemical composition, phenolic compounds concentration and DM ruminal degradability parameters and ruminal, post-ruminal and total tract digestibility of DM were measured. The results showed that ensiling significantly decreased total phenolic compounds, total tannins, gallic acid, tannic acid, penicillin and punicalagin A content of PSP but condensed tannins, ellagic acid and punicalagin B content were not affected by preservation method. DM ruminal degradability parameters, rapidly and slowly potentially degradable fractions and effective degradability on passage rate of 0.02, 0.05 and 0.08 per h were not significantly affected by treatments but ensiling increased the ruminal and total tract digestibility of DM and decreased the DM degradability rate constant and DM post-ruminal digestibility. Based on the results of this study ensiling could improve the nutritional value of PSP.

کلیدواژه‌ها [English]

  • digestibility
  • Ensiling
  • phenolic compound
  • Pomegranat Seed Pulp (PSP)
  • tannin
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