اثر پربیوتیک گالاکتوالیگوساکارید بر رشد، بازماندگی و برخی شاخص‌های ایمنی ذاتی لارو قزل آلای رنگین کمان (Oncorhynchus mykiss)

نوع مقاله: مقاله پژوهشی

نویسندگان

چکیده

پربیوتیک­ها مواد غذایی غیرقابل هضم می باشند که با تحریک اختصاصی رشد و یا فعالیت باکتری­های تخصصی ارتقاء دهنده سلامت، اثر مفیدی روی میزبان می­گذارند. تحقیق حاضر به­منظور بررسی اثر مکمل غذایی گالاکتوالیگوساکارید بر رشد، بازماندگی و برخی شاخص­های ایمنی لارو قزل آلای­رنگین کمان (Oncorhynchus mykiss) به مدت 60 روز صورت گرفت. در این مطالعه، تعداد 360 قطعه لارو قزل آلای­رنگین کمان با میانگین وزنی g 01/0±13/0 در یک طرح کاملا تصادفی به 4 تیمار آزمایشی و 3 تکرار ( با تعداد 10 قطعه در هر تکرار) تقسیم شدند و به­ترتیب با رژیم­های غذایی حاوی 0، 1، 2 و 3 % گالاکتوالیگوساکارید مورد تغذیه قرار گرفتند. نتایج حاصله نشان داد که بالاترین، افزایش وزن به­دست آمده، ضریب رشد ویژه و نسبت کارایی پروتئین در تیمار حاوی 2 و 3 % گالاکتوالیگوساکارید مشاهده شد که با بقیه تیمار­ها دارای تفاوت معنی­دار بود (05/0>p). بیشترین فعالیت لیزوزیم، پروتئین تام، گلوبولین، آلبومین، وزن نهایی و بقاء در تیمارحاوی 2% گالاکتوالیگوساکارید مشاهده شد که با بقیه تیمار­ها تفاوت معنی­داری را نشان دادند (05/0>p). بر اساس نتایج این تحقیق، افزودن 2 % گالاکتوالیگوساکارید در جیره غذایی ماهی قزل آلای­رنگین کمان به­منظور بهبود شاخص­های رشد، بقاء و پاسخ­های ایمنی ذاتی در این ماهی موثر است.

کلیدواژه‌ها


عنوان مقاله [English]

a

نویسندگان [English]

  • M. Ali
  • P. Akbary
  • S. Soltanian
  • A. Gholamhosseini
چکیده [English]

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ct of  galactooligosaccharide prebiotic on growth performance, survival  and several of innate immunity parameters of rainbow trout (Oncorhynchus mykiss) larvae
Ali M1.,Akbary P2*., Soltanian S1. and Gholamhosseini A1*[1]paria.akbary@gmail.com
1. Aquatic Animal Health and Diseases group, Faculty of Veterinary Medicine, Shiraz University
2- Fisheries group, Faculty of Marine Sciences, Chabahar Maritime University
Abstract
 
Prebiotics are non-digestive food ingredients which beneficially affect the host by selectively stimulating the growth and activity of health-promoting bacteria in the intestinal tract. This experiment was conducted to evaluate the effect of dietary supplementation of galactooilgosaccharide on the growth performances, survival and several of innate immunity parameters of rainbow trout (Oncorhynchus mykiss) larvae for 60 days.In this experiment, 360 of larvae (with average weight of 0.13±0.01g) in 4 treatments and 3 replicates (n=30 in each replicate) in a completely randomized design was divided and fed with diets containing 0, 1, 2 and 3 percent galactooligosaccharide respectively.The present results showed that highest WG, SGR and PER were observed in the diet containing 2 and 3 percent of dietary galactoologosaccharide which had a significant difference compared with other treatments (p<0.05). The highest, survival, total protein, albumin and globulin levels were observed in treatments containing 2 percent of dietary galactooligosaccharide which showed a significant difference compared with other treatments (p<0.05). Finally, the present results suggest that diets containing 2 percent of dietary galactooligosaccharide could improve growth, survival and innate immunity responses of rainbow trout
 



[1] *Corresponding Author

کلیدواژه‌ها [English]

  • Oncorhynchus mykiss
  • Prebiotic
  • Growth parameters
  • innate immunity