نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانش آموخته کارشناسی ارشد، گروه شیلات، واحد تالش، دانشگاه آزاد اسلامی، تالش، ایران. کدپستی: 65143- 43711
2 استادیار گروه شیلات، واحد تالش، دانشگاه آزاد اسلامی، تالش، ایران. کدپستی: 65143- 43711
چکیده
این تحقیق جهت ارزیابی چهار جیره غذایی رایج در بازار ایران بر رشد و برخی از فاکتورهای بیوشیمیایی فیلماهیان (Huso huso) در زمستان 1393 اجرا شد. تعداد 80 قطعه فیلماهی پرورشی با میانگین وزنی 29/134 ± 48/4063 گرم بطور تصادفی به 8 حوضچه بتنی دایره‌ای با تراکم 10 عدد ماهی معرفی شدند. ماهیان به مدت یک هفته با شرایط جدید پرورشی سازگاری پیدا کردند. فیلماهیان با چهار جیره بهدانه، بیومار، فرادانه و اسکرتینگ با 2 تکرار (طرح کاملاً تصادفی) تغذیه شدند. نتایج نشان داد که بیشترین وزن نهایی، درصد افزایش وزن بدن، میانگین رشد روزانه، شاخص رشد ویژه، ضریب چاقی، ضریب کارایی پروتئین و کمترین ضریب تبدیل غذایی و شاخص قیمت در تیمار فرادانه مشاهده شدند که اختلاف معنیداری با تیمار بهدانه داشتند (05/0>P). ماهیان تغذیه کرده از هر چهار جیره اختلاف معنیداری را در گلوکز خون نشان ندادند (05/0P). تیمارهای بهدانه و بیومار بیشترین (05/0>P) میزان پروتئین کل را به خود اختصاص دادند که با تیمار فرادانه اختلاف معنیدار نشان دادند. بیشترین میزان آلبومین در تیمارهای بهدانه، بیومار و اسکرتینگ رویت شد که با تیمار فرادانه اختلاف معنیدار آماری داشتند (05/0>P). تیمار بهدانه دارای بالاترین (05/0>P) سطح آنزیمهای کبدی بود. براساس نتایج مذکور می توان اظهار نمود که تیمار فرادانه می تواند نقش مهمی را در افزایش عملکرد رشد و کارایی تغذیه و نیز بهبود برخی از شاخصهای بیوشیمیایی فیلماهیان پرورشی ایفا نماید.
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