اثر عصاره آنزیمی مستخرج از ضمائم پیلوریک ماهی بر عملکرد رشد و ترکیب بیوشیمیایی بچه ماهی قزل آلای رنگین کمان (Oncorhynchus mykiss)

نوع مقاله : مقاله کامل علمی - پژوهشی

نویسندگان

1 نویسنده مسئول، دانشجوی دکتری تخصصی گروه تکثیر و پرورش آبزیان، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.

2 استاد گروه تکثیر و پرورش آبزیان، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.

3 دانشیار گروه علوم و مهندسی شیلات، دانشکده منابع طبیعی و محیط زیست، دانشگاه ملایر، همدان، ایران.

4 استادیار گروه علوم درمانگاهی، دانشکده دامپزشکی، دانشگاه رازی، کرمانشاه، ایران.

چکیده

در صنعت پرورش ماهی، استفاده از مکمل‌های غذایی، از جمله آنزیم‌ها، به‌عنوان یک راهبرد حیاتی برای بهبود عملکرد تغذیه‌ای و رشد مطرح است. این تحقیق به منظور ارزیابی تأثیر عصاره آنزیمی مستخرج از ضمائم پیلوریک بر عملکرد رشد و ترکیب شیمیایی بدن بچه ماهی قزل‌آلای رنگین کمان انجام شد. چهار جیره غذایی شامل جیره شاهد (A: بدون آنزیم) و سه جیره حاوی مقادیر مختلف عصاره آنزیمی (B: 5/0، C: 1و D: 2 گرم در کیلوگرم غذا) همسان از نظر پروتئین و انرژی تهیه شد. نتایج نشان دادن جیره‌های D وC، به ترتیب بهترین عملکرد رشد را نسبت به سایر جیره‌های آزمایشی نشان دادند. به طوری که شاخص‌های افزایش وزن بدن و نرخ رشد روزانه در این جیره‌ها بطور معناداری از سایر جیره‌ها بیشتر بود. این جیره‌ها با کمترین ضریب تبدیل غذایی، به طور معناداری بهترین عملکرد را در مصرف غذا نیز به نمایش گذاشتند. همچنین، نرخ رشد ویژه و شاخص وضعیت در جیره D و نرخ بقاء در جیره C بیشترین مقدار را نشان داد اگرچه این تفاوت‌ها معنادار نبودند. درصد خاکستر در جیره D نیز نسبت به سایر جیره‌ها به طور معناداری بیشتر بود. به ترتیب جیره‌های D وC، به طور معنی‌داری باعث افزایش نسبت کارایی پروتئین و نسبت کارایی چربی شدند. نتایج این تحقیق نشان می‌دهد که استفاده از 2 گرم در کیلوگرم عصاره آنزیمی مستخرج از ضمائم پیلوریک می‌تواند به بهبود عملکرد رشد و تغذیه‌ای بچه ماهی قزل‌آلای رنگین کمان کمک کند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effect of enzyme extract derived from fish pyloric appendages on growth performance and biochemical composition of rainbow trout fry (Oncorhynchus mykiss)

نویسندگان [English]

  • Pouria Heshmatzad 1
  • َAbdolmajid Hajimoradloo 2
  • Abbas Zamani 3
  • Hadi Cheraghi 4
1 Corresponding Author, Ph.D. Student, Dept. of Aquaculture, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
2 Professor, Dept. of Aquaculture, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
3 Associate Prof., Dept. of Fisheries, Faculty of Natural Resources and Environment, Malayer University, Hamedan, Iran.
4 Assistant Prof., Dept. of Clinical Sciences, Faculty of Veterinary Medicine, Razi University, Kermanshah, Iran.
چکیده [English]

In fish farming industry, the use of nutritional supplements, including enzymes, is recognized as a vital strategy to enhance nutritional performance and growth. This study aimed to evaluate the effect of enzymatic extract from pyloric appendages on the growth performance and body composition of rainbow trout fry. Four dietary treatments were prepared, including a control diet (A: without enzyme) and three diets containing different levels of enzyme extract (B: 0.5 g/kg, C: 1 g/kg, and D: 2 g/kg of feed) with uniform protein and energy content. The results indicated that diets D and C exhibited the best growth performance compared to other experimental diets. These diets significantly outperformed others in terms of body weight increase and daily growth rate. Moreover, they showed the best feed conversion ratio, indicating efficient feed utilization. Additionally, diet D showed the highest specific growth rate and condition factor, while diet C exhibited the highest survival rate, although these differences were not statistically significant. The ash content in diet D was also significantly higher compared to other diets. Diets D and C significantly increased protein efficiency ratio and lipid efficiency ratio. The findings suggest that the inclusion of 2 g/kg enzymatic extract from pyloric appendages can improve the growth and nutritional performance of rainbow trout fry.

کلیدواژه‌ها [English]

  • enzyme extract
  • rainbow trout
  • fish waste
  • growth performance

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مجله بهره برداری و پرورش آبزیان
دوره 13، شماره 3
مهر 1403
صفحه 183-195

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