Immunohematological parameters of rainbow trout ( Oncorhynchus mykiss ) fed supplemented diet with different forms of barberry root ( Berberis vulgaris )

AbstractIn 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 <  0.05). The highest levels of WBC (26.5 × 103), 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 <  0.05). Also, inhibition zone appeared with the barberry againstAeromonas 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.

Source: Comparative Clinical Pathology - August 12, 2019 Category: Pathology Source Type: research