اثرات استفاده مجزا و تلفیقی اسید فرمیک و پروبیوتیک پدیوکوکوس اسید لاکتیکی (Pediococcus acidilactici ) بر شاخص‌های رشد و مقاومت به شوری در بچه ماهی کپور معمولی(Cyprinus carpio)

نوع مقاله : مقاله کامل علمی - پژوهشی

نویسندگان

1 دانشگاه علوم کشاورزی و منابع طبیعی گرگان

2 مؤسسه تحقیقات علوم شیلاتی کشور

چکیده

در این آزمایش اثر پروبیوتیک پدیوکوکوس اسید لاکتیکی (Pediococcus acidilactici)، اسید فرمیک و تلفیق پروبیوتیک و اسید فرمیک بر شاخص‌های رشد و مقاومت به شوری در ماهی کپور معمولی (Cyprinus carpio) مورد بررسی قرار گرفت. بدین منظور تعداد 228 قطعه ماهی کپور با میانگین وزنی 5/0±5/5 گرم به مدت 8 هفته با 3 جیره‌ آزمایشی حاوی 1/0 درصد پروبیوتیک پدیوکوکوس اسید لاکتیکی، 3/0 درصد اسید فرمیک و تلفیق پروبیوتیک و اسید فرمیک و جیره شاهد (بدون افزودنی) با 3 تکرار تغذیه شدند. در پایان دوره شاخص‌های رشد و مقاومت به شوری در تیمارهای مختلف مورد بررسی قرار گرفتند. نتایج نشان داد در شاخص میانگین وزن ثانویه و افزایش وزن اختلاف معنی‌داری در تیمار تلفیقی و همچنین تیمار مجزای اسید فرمیک با تیمار پروبیوتیک و شاهد مشاهده شد. نرخ رشد ویژه و درصد بازماندگی اختلاف معنی‌داری بین تیمارها نشان نداد (05/0P>). کمترین میزان ضریب تبدیل غذایی در تیمارهای تلفیقی پروبیوتیک و اسید فرمیک مشاهده شد. درصد بازماندگی در شوری 15 گرم در هزار در ماهیان تغذیه شده با تیمارهای غذایی مختلف طی 7 روز در تیمار تلفیقی در تمام روزهای مواجهه با تنش شوری بیشترین میزان (100 درصد) و در تیمار پروبیوتیک بیشتر از تیمار اسید فرمیک و شاهد بود. نتایج این مطالعه نشان‌دهنده‌ی اثرات مفید پدیوکوکوس اسید لاکتیکی و اسید فرمیک به ویژه به‌‌صورت تلفیقی بر شاخص‌های رشد و مقاومت به شوری در ماهی کپور می‌باشد

کلیدواژه‌ها


عنوان مقاله [English]

Effects of singular or combined administration of formic acid and Pediococcus acidilactici on growth indices and resistance to salinity in common carp fingerling (Cyprinus carpio)

نویسندگان [English]

  • fatemeh heshmatfar 1
  • Roghayeh Safari 1
  • Ali Shabany 1
  • Hosein Hoseinifar 1
  • Hadi Ghafari 2
1 Gorgan University of Agricultural Sciences and Natural Resources
2 National Institute of Fisheries Research
چکیده [English]

In this experiment effects of singular or combined administration of formic acid and Pediococcus acidilactici on growth indices and resistance to salinity in common carp fingerling (Cyprinus carpio) were investigated. For this purpose 228 fish with average weight of 5.5±0.5 gr, were fed diets supplemented for 8 weeks using experimental diet including probiotic (0.1%), formic acid (0.3%), combination of probiotic and formic acid and a control group. At the end of feeding trial growth indices and resictance to salinity were evaluated. Significant differences (P≤0.05) were observed in final weight and weight gain in fish fed combined probiotic and formic acid compare with singular probiotic and control group. SGR and survival percentage showed no significant difference between treatments (P≥0.05). The least FCR were observed in fish fed combined probiotic and formic acid (p < 0.05). The results of this experiment showed suitable effect of using probiotic and formic acid espsially in combination form on growth and resistance to salinity in Common carp.

کلیدواژه‌ها [English]

  • Cyprimus carpio
  • Probiotic
  • Organic acid
  • Formic acid
  • Growth
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