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Abstract

In this experiment, the effect of barberry root powder and methanol extract on the growth and immunohematological parameters of rainbow trout (Oncorhynchus mykiss) was studied. A total of 306 rainbow trout fingerlings (15.55 ± 0.76 g) were fed for 8 weeks with six experimental diets: control (C), BRP10 (10 g kg−1 of barberry root powder), BRP20 (20 g kg−1 of barberry root powder), BRE250 (250 mg kg−1 of barberry root extract), BRE500 (500 mg kg−1 of barberry root extract), and oxytetracycline OTC30 (30 g kg−1). The results indicated BRE250, BRE500, and OTC30 had significantly higher weight gain (93.04, 92.52, and 90.48 g, respectively) compared with other dietary treatments (P 3), RBC (1.8 × 106), HB (9.47 g dl−1), MCHC (22.19 g dl−1), lymphocytes (67.67%), lysozyme (65.67), and ACH50 (139) in fish fed BRE500 diet were observed (P Aeromonas hydrophila in vitro. Totally, it is suggested that the BRE500 diet can be used as a natural stimulant of growth and immunity in the aquaculture industry.

Item Type:	Article
Authors/Creators:	Ramezanzadeh, S and Kenari, AA and Esmaeili, M
Keywords:	bacteria challenging, blood chemistry, immune system, immune stimulants, hematology, rainbow trout
Journal or Publication Title:	Comparative Clinical Pathology
Publisher:	Springer
ISSN:	1618-5641
DOI / ID Number:	https://doi.org/10.1007/s00580-019-03032-8
Copyright Information:	Copyright 2019 Springer-Verlag London Ltd., part of Springer Nature
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