Research Article: Effect of egg flour as an alternative protein source on biochemicial parameters of rainbow trout
Publish place: Iranian Journal of Fisheries Sciences، Vol: 20، Issue: 1
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JIFRO-20-1_018
تاریخ نمایه سازی: 23 بهمن 1400
Abstract:
In this study, the effects of diets supplemented with ۱۳.۵%, ۲۲.۵%, ۳۱.۵% and ۵۱.۷% (diet groups; D۱, D۲, D۳, D۴, respectively) egg flour instead of fish meal on blood proteins, lipids and ion levels pigmentation of rainbow trout were investigated. Fish (initial weight and length, ۷۲.۸۷±۰.۷۳ g, ۱۸.۱۱±۰.۰۶ cm, respectively) were distributed into ۱۵ fiberglass rectangular (۲۰۰ cm×۴۰ cm ×۴۰ cm) tanks in a ۵×۳ experimental design (۵ diet groups×۳ replicate groups) with a density of ۳۰ juvenile rainbow trout (Oncorhynchus mykiss) per tank. Fish were fed with four different diets containing egg flour, and a basal diet (not supplemented) for ۱۲ weeks. The results of oneway ANOVA test showed that blood proteins, lipids and ion levels of fish were affected by dietary supplementation of egg flour. Serum glucose level in the D۴ group was significantly lower (p<۰.۰۵) than the other diet groups. Serum total protein (TP) levels in D۴ and D۳ group were significantly higher (p<۰.۰۵) than the other diet groups. Serum uric acid, creatinin, blood urea nitrogen (BUN), and urea levels increased in the D۴ group. It was concluded that replacing with ۵۰% egg flour in rainbow trout diet decreased the serum ion levels of magnesium (Mg+), calcium (Ca+), sodium (Na+), potassium (K+) and phosphorus (P) %. However, serum Cl- levels were not statistically different among the groups (p>۰.۰۵). On the other hand, serum lipid levels concluded an increasing tendency with the increasing percentage of supplement in the fish diet. The results of the present work indicate that compared to the experimental diets, it can also be concluded that when egg flour is used in rations of over ۵۰% in rainbow trout it has significantly negative effects on blood protein, lipid and ion concentration.
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Authors
G. Tuna Kelestemur
Fırat University, Fisheries Faculty
Z. Çambay
Fırat University Health Services Vocational High School Elazig, Turkey
N. Kelestemur
Fırat University Health Services Vocational High School Elazig, Turkey
A.A. Uslu
Aquaculture Research Institute, Elazıg, Turkey
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