مقایسه آنالیزلاشه و پروفایل اسیدهای چرب بین قزل‌آلای رنگین کمان رودخانه‌ای، پرورشی (Oncorhynchus mykiss) و قزل‌آلای خال قرمز (Salmo trutta fario) در رودخانه هراز

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری شیلات، واحد بابل، دانشگاه آزاد اسلامی، بابل، ایران

2 استادیارگروه بیولوژی دریا، واحد تنکابن، دانشگاه آزاد اسلامی، تنکابن، ایران

چکیده

     تحقیق حاضر با هدف تعیین ترکیب شیمیایی و پروفایل اسید‌های چرب بافت عضلانی سه گروه از آزاد‌ ماهیان رودخانه‌ای و پرورشی شامل قزل­آلای رنگین­کمان رودخانه‌ای و پرورشی (Oncorhynchus mykiss) و  قزل­آلای خال قرمز(Salmo trutta fario)   انجام شد. در مجموع 9 عدد ماهی  قزل­آلای رنگین کمان رودخانه­ای، خال قرمز و  قزل­آلای پرورشی از محدوده رودخانه هراز نمونه برداری شد. نمونه‌ها به حالت منجمد به آزمایشگاه منتقل، زیست سنجی سپس ترکیبات لاشه و پروفایل اسیدهای چرب با سه تکرار اندازه گیری شدند. مطابق با نتایج زیست سنجی و آنالیز لاشه (خاکستر، رطوبت، پروتئین و چربی) اختلاف معنا‌داری بین سه گروه مشاهده نشد (05/0<P).بیشترین مقدار اسید چرب اشباع (SFA) 787/0± 80/24، تک غیر اشباع (MUFA) 638/1± 03/48 و چند غیر اشباع (PUFA) 916/4± 95/45 به ترتیب در ماهی  قزل­آلای رودخانه‌ای، خال قرمز و پرورشی دیده شد که تفاوت معنی‌داری بین سه گروه  وجود داشت (05/0>P).اما در میزان امگا 3 (ω-3)، امگا 6 (ω-6)، ایکوزاپنتائنوئیک اسید (EPA) و دوکوزا هگزانوئیک اسید (DHA) بین گروه­ها اختلاف معنی‌داری دیده نشد (05/0<P). همچنین نسبت ω-3/ω-6 در تمام گونه‌ها از یک بیشتر بود.بیشترین نسبت ω-3/ω-6 به ترتیب در  قزل آلا پرورشی (625/0± 30/3)،  قزل آلا خال قرمز (458/0± 44/2) و  قزل­آلا رودخانه‌ای (706/0± 36/2) مشاهده شد. در هر سه گروه مورد مطالعه، نسبت ω-3/ω-6 از مقدار توصیه شده متخصصان تغذیه بیشتر بود. بر اساس نتایج،  قزل آلای رنگین کمان رودخانه‌ای، پرورشی و خال قرمز از نظر ارزش غذایی بسیار غنی هستند.

کلیدواژه‌ها


عنوان مقاله [English]

Comparison of corpus analysis and of fatty acid profiles between rainbow trout of river and farm (Oncorhynchus mykiss) and red speckled trout (Salmo trutta fario) from Haraz River

نویسندگان [English]

  • Niloofar Fallah 1
  • Mehrnoush Norouzi 2
  • Taghi Mohammadi Fotemi 1
1 Ph.D. Candidate, Fishery Department, Babol Branch, Islamic Azad University, Babol, Iran
2 Assistant Professor, Fishery Department, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran
چکیده [English]

The purpose of this study was to determine the chemical composition and fatty acid profile of muscle tissue in three groups of salmonids including:Rainbow trout river and farmed (Oncorhynchus mykiss) and red speckled trout (Salmo trutta fario(.A total of 27 rainbow trout of river and red speckled trout from the river Haraz and farmed fish were sampled from around the Haraz River. The samples were transferred frozen to the laboratory. The carcass composition biometry was conducted and then the fatty acid profiles were prepared with three replications. According to biometric and carcass analysis (ash, moisture, protein and fat), there was no significant difference between the three groups (P <0.05).The highest amount of saturated fatty acids content of (SFA) 24.85 ± 0.87, monounsaturated (MUFA) of 48.33 ± 1.06 and polyunsaturated fatty acid (PUFA) of 45.95 in river trout, speckled red and farmed there was a significant difference between the three species (p < 0.05). But in the omega-3, omega-6 EPA and DHA, there was no significant difference between species. The ratio of ω-3/ω-6 was higher than one in all species. The highest ratio of ω-3/ω-6 were observed in farmed trout 3.30± 0/625, red spotted trout 2.44± 0.458 and river trout 2.36± 0.706. In all three groups of ω-3/ω-6 was higher than the recommended dose of experts. Based on the results a river trout, farmed and red speckled trout are very rich in nutritional value.

کلیدواژه‌ها [English]

  • Corpus analysis
  • Profiles of fatty acid
  • Rainbow trout of farm
  • Speckled trout
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