تأثیر قرص آهستة رهش روی، سلنیوم و کبالت بر عملکرد و برخی فراسنجه‌های خونی بزهای نر مرخز

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار، گروه علوم دامی، دانشکدة کشاورزی، دانشگاه بوعلی سینا، همدان

2 دانشجوی سابق کارشناسی ارشد، گروه علوم دامی، دانشکدة کشاورزی، دانشگاه بوعلی سینا، همدان

3 دانشیار، گروه علوم درمانگاهی، دانشکدة پیرا دامپزشکی، دانشگاه بوعلی سینا، همدان

4 استادیار، گروه علوم دامی، دانشکدة کشاورزی دانشگاه لرستان

5 دانشجوی دکتری، گروه علوم دامی، دانشکدة کشاورزی، دانشگاه بوعلی سینا، همدان

چکیده

این پژوهش به‌منظور بررسی تأثیر قرص آهستة رهش حاوی روی، سلنیوم و کبالت بر عملکرد و فراسنجه­های خونی بزهای نر مرخز به مدت شصت روز انجام شد. شمار هجده رأس بز نر مرخز با میانگین سن پانزده ماه و میانگین وزن بدن 1/5±4/24 کیلوگرم، به‌طور تصادفی به دو گروه 9 رأسی شامل: 1) گروه شاهد (دریافت‌کنندة جیرة پایه بدون هرگونه مکمل کانی و بدون قرص آهستة رهش) و 2) گروه قرص (دریافت‌کنندة جیرة پایه افزون بر یک عدد قرص آهستة رهش) تقسیم شدند. میزان مادة خشک مصرفی، افزایش وزن روزانه و بازدة خوراک تعیین شد. فراسنجه‌های خونی در روزهای 30 و 60 آزمایش اندازه‎گیری شد. مصرف خوراک روزانه بین تیمارهای آزمایشی یکسان بود. در گروه شاهد، میزان افزایش وزن روزانه (41/37 گرم در روز)، غلظت ویتامین 12B (05/185 واحد در لیتر) و روی (86/0 میلی‌گرم در لیتر) پلاسما، فعالیت آنزیم­های آلکالین فسفاتاز (31/167واحد در لیتر) سرم و گلوتاتیون پراکسیداز خون کامل (28/261 واحد در گرم هموگلوبین) و غلظت هورمون 3T سرم (35/1 نانو مول بر لیتر) در مقایسه با گروه دریافت‌کنندة قرص کمتر بود (05/0>P). همچنین فعالیت آنزیم کراتین فسفوکیناز و غلظت 4T سرم در تیمار دریافت­کنندة قرص در مقایسه با گروه شاهد کمتر بود (05/0>P). به‌طورکلی، نتایج این مطالعه نشان داد که استفاده از قرص آهستة رهش روی، سلنیوم و کبالت می‌تواند عملکرد و وضعیت گلوتاتیون­پراکسیداز، ویتامین 12B و تری یدوتیرونین (3T) خون را در بزهای مرخز در مقایسه با گروه دریافت‌کنندة جیرة پایه بدون هرگونه مکمل کانی بهبود دهد.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of feeding slow-release bolus of zinc, selenium and cobalt on growth performance and some blood metabolites of Markhoz male goats

نویسندگان [English]

  • Hassan Aliarabi 1
  • Mehdi Bayervand 2
  • Aliasghar Bahari 3
  • Pouya Zamani 1
  • Amir Fadayifar 4
  • Reza Alimohamady 5
1 Associate Professor, Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
2 Former M. Sc. Student, Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
3 Associate Professor, Department of Clinical Sciences, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran
4 Assistant Professor, Department of Animal Science, Faculty of Agriculture, Lorestan University, Iran
5 Ph. D. Candidate, Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
چکیده [English]

This trial was conducted to evaluate the effects of slow-release bolus containing zinc, selenium and cobalt on growth performance and blood parameters of Markhoz male goats for 60 days. Eighteen Markhoz male goats, 15 months of age with average weight of 24.4±5.1 kg were randomly divided into 2 groups (9 goats per group) including: 1) control group (basal diet without any mineral supplements and slow-release bolus and 2) bolus group (basal diet + one slow release bolus). The dry matter intake, average daily gain and feed efficiency were determined. Blood parameters were measured on days 30 and 60. Daily feed intake was similar among treatments. Daily weight gain (37.41 gr/day), plasma concentrations of vitamin B12 (185.05 IU/L) and Zinc (0.86 mg/L), the activity of serum alkaline phosphatase (167.31 IU/L) and whole blood glutathione peroxidase (261.28 IU/gr Hb) and serum T3 level (1.35 nmol/L) were lower in control group than group receiving bolus (P<0.05). The activity of creatine phosphokinase and serum T4 concentration were also significantly lower in group receiving bolus compared to control group (P<0.05). The overall results of this study showed that slow release bolus containing Zn, Se and Co could improve performance, blood glutathione peroxidase, vitamin B12 and tri-iodothyronine (T3) status in Markhoz goats compared with the group that received the basal diet without any mineral supplements.

کلیدواژه‌ها [English]

  • Blood
  • cobalt
  • Goat
  • Growth
  • selenium
  • slow release bolus
  • Zinc
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