تعیین عملکرد رشد، تغییرات ترکیب لاشه و پارامترهای خونی بچه ماهیان کپور معمولی (Cyprinus carpio) تغذیه شده با سطوح متفاوت ویتامین E

نویسندگان

1 گروه شیلات، واحد تالش، دانشگاه آزاد اسلامی، تالش- ایران

2 گروه شیلات، واحد رشت، دانشگاه آزاد اسلامی، رشت- ایران

3 پژوهشکده آبزی پروری آبهای داخلی، بندرانزلی- ایران

چکیده

زمینه مطالعه: ویتامین ها جزء ضروری رژیم غذایی آبزیان تلقی می گردند. هدف: این تحقیق به منظور سنجش تاثیر سطوح مختلف ویتامین E بر عملکرد رشد، ترکیب لاشه و پارامترهای خونی بچه ماهی کپور معمولی (Cyprinus carpio) اجرا شد. روش کار: تعداد 96 عدد بچه ماهی کپور با وزن متوسط (g 64/3 ± 49/15) به مدت 10 هفته و به صورت تصادفی به 12 تانک فایبرگلاس با تراکم 8 عدد در قالب 4 تیمار شامل شاهد (بدون افزودن ویتامین)، mg/kg 100، mg/kg 200 و mg/kg 400 ویتامین E با 3 تکرار توزیع شدند. نتایج: نتایج نشان داد که بیشترین وزن نهایی، درصد افزایش وزن بدن، میانگین رشد روزانه، شاخص رشد ویژه، ضریب چاقی و کمترین ضریب تبدیل غذایی در تیمار mg/kg 200 مشاهده شد که اختلاف معنی داری با سایر تیمارها نداشت (05/0(p>. ماهیان تغذیه کرده از ویتامین E در سطح mg/kg 200 دارای پروتئین و خاکستر بیشتری (05/0(p> نسبت به شاهد در لاشه خود بودند. افزایشی در تعداد گلبول های قرمز، هماتوکریت و هموگلوبین در ماهیان تغذیه شده با سطوح mg/kg 100، mg/kg 200 و mg/kg 400 ویتامین E نسبت به شاهد وجود داشت. در شاخص MCHC اختلاف معنی داری بین تیمار mg/kg 100 با تیمارهای شاهد و mg/kg 400 و تیمار mg/kg 200 با تیمار mg/kg 400 وجود داشت (05/0(p

کلیدواژه‌ها

عنوان مقاله [English]

Determination of growth performance, changes of carcass composition and blood parameters in common carp fingerlings (Cyprinus carpio) fed with different levels of vitamin E

نویسندگان [English]

  • Reza Taati 1
  • Mahboubeh Ahmadizadeh 2
  • Ali Reza Valipour 3
1 Department of Fisheries, Talesh Branch, Islamic Azad University, Talesh-Iran
2 Department of Fisheries, Rasht Branch, Islamic Azad University, Rasht-Iran
3 National Inland Water Aquaculture Institute, Bandar Anzali-Iran
چکیده [English]

BACKGROUND: Vitamins are considered an essential part in diet of aquatic animals. OBJECTIVES: This study was carried out to assay the effect of different levels of vitamin E on growth performance, carcass compositions and blood parameters of common carp fingerlings (Cyprinus carpio). METHODS: Total number of 96 common carp fingerlings weighing 15.49 ± 3.64 g were randomly distributed into 12 fiberglass tanks in four treatments group including control (without added vitamin), 100, 200 and 400 mg/kg vitamin E in three replicates and kept at a density of 8 fish per tank for 10 weeks. RESULTS: Results showed that the highest weight gain, percentage of body weight increase, mean daily growth, specific growth rate, condition factor and the lowest food conversation ratio were observed in fish fed with 200mg/kg vitamin E but no significant differences were seen compared to other treatments (p>0.05). Fish fed with 200mg/kg vitamin E had the highest (p>0.05) contents of protein and ash compared to control group. There was an increase in values of RBC, Hct and Hb in fish fed with 100, 200 and 400 mg/kg vitamin E in comparison with control group. Significant differences were observed in MCHC in fish fed with 100 mg/kg vitamin E compared to control and fish fed with 400 mg/kg, also treatment 200 mg/kg with treatment 400 mg/kg vitamin E (p<0.05). Fish fed vitamin E in 200 and 100 mg/kg had the highest WBC count. Fish fed with different levels of vitamin E had higher lymphocyte in comparison with control group and fish fed with 100 mg/kg had significant difference with control in lymphocyte (p<0.05). CONCLUSIONS: Vitamin E in level of 200 mg/kg can play an important role to enhance growth performance, nutrition efficiency and improving blood indices and support cell immunity in common carp fingerlings.

کلیدواژه‌ها [English]

  • Blood
  • Common carp
  • Cyprinus carpio
  • growth performance
  • vitamin E

مراجع

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