اثر پودر گیاه خرفه بر عملکرد، کیفیت و ثبات اکسیداتیو گوشت و برخی متابولیت های خونی در بره های پرواری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری تخصصی تغذیه دام، گروه علوم دامی دانشکده علوم کشاورزی دانشگاه گیلان

2 استادیار گروه علوم دامی دانشکده علوم کشاورزی دانشگاه گیلان

چکیده

این آزمایش به منظور بررسی اثر استفاده از سطوح مختلف پودر خشک شده گیاه خرفه (DPP) بر عملکرد، کیفیت و ثبات اکسیداتیو گوشت و برخی متابولیت­های خونی در بره­های نر ترکی قشقایی انجام شد. تعداد 16 راس بره نر ترکی قشقایی 3 ماهه (با وزن زنده 46/0±22 کیلوگرم) به طور تصادفی به 4 گروه تقسیم شدند و به مدت 60 روز از جیره­های حاوی سطوح صفر (شاهد)، 5، 10 و 15 درصد DPP تغذیه نمودند. نتایج نشان داد که استفاده از سطوح متفاوت گیاه خرفه اثر معنی­داری بر عملکرد رشد بره­ها در 60 روز پرواربندی نداشت.pH  و درصد رطوبت گوشت در زمان­های مختلف (60، 120 و 180 روز) نگهداری تحت تأثیر تیمارهای آزمایشی و زمان قرار نگرفت. افزایش مدت زمان نگهداری سبب افزایش مواد واکنش­دهنده با اسید تیوباربیتورک (TBARS) گوشت در تمام تیمارهای آزمایشی شد (05/0P<). تیمارهای حاوی DPP به طور معنی­داری TBARS کمتری نسبت به تیمار شاهد داشتند (05/0P<). افزایش مقدار DPP سبب شد تا تولید TBARS به صورت خطی در زمان­های مختلف نگهداری گوشت کاهش یابد (001/0P<). همچنین با افزایش سطح DPP کاهش خطی در میزان تری­گلیسرید و کلسترول خون مشاهده شد (01/0P<)، اما اثری بر میزان گلوکز خون نداشت (05/0P>). به طور کلی سطح 10 درصد DPP برای ثبات اکسیداتیو گوشت بره­های پرواری مناسب بود و سطح 15 درصد DPP بیشترین کاهش را در متابولیت­های چربی­ خون ایجاد کرد.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of purslane powder on performance, quality and oxidative stability of meat and some blood metabolites in fattening lambs

نویسندگان [English]

  • H. Safari 1
  • M. Mohiti Asli 2
  • F. Mohammadpour 1
1 Ph.D Student of Animal Nutrition, Department of Animal Science, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran
2 Assistant Professor, Department of Animal Science, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran
چکیده [English]

This experiment was conducted to investigate the effect of different levels of dried powder Purslane (DPP) on performance, meat quality, meat oxidative stability and some blood metabolites in Torki Qashqai male lambs. 16 Torki Qashqai male lambs 3 months (with 22±0.46 kg body weight) were randomly divided into 4 groups and were fed of diets containing different levels of 0 (control), 5, 10 and 15% DDP for 60 days. The results showed that the use of different levels of Purslane were not significant effect on growth performance on 60 days of fattening period. pH and moisture of meat on different storing times (60, 120 and 180 days) were not affected by treatments and time (P>0.05). TBARS levels in lamb meat increased linearly with increasing storage time (P<0.05). Lamb fed with different levels of DPP significantly had lower TBARS compared to control groups (P<0.05). Both of these treatments have lower TBARS than the control group (P<0.05). Inclusion of higher amount of purslane in diet led to linear decrease in production of TBARS in period of meat storage (P<0.05). Inclusion of higher content of purslane in diet led to linear decrease in blood cholesterol and triglyceride content (P<0.01), but did not affect on blood glucose content (P>0.05). In conclusion, inclusion of 10 percent DPP in lamb diet improves meat oxidative stability and 15 percent DPP caused more reduction in blood lipids.

کلیدواژه‌ها [English]

  • Blood metabolites
  • Fattening lambs
  • Oxidative stability
  • Purslane
  • Storage of meat
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