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Abstract

The effects of dietary hydroalcoholic extract of honeybee pollen (HBPE) on growth performance, flesh quality, immunity and stress response were investigated. Two hundred fifty‐five rainbow trout (11.14 ± 1.06 g) were fed five diets containing increasing levels of HBPE: control, 0.25HBPE (0.25 g HBPE/kg), 0.5HBPE (0.5 g HBPE/kg), 1HBPE (1 g HBPE/kg) and 1.5HBPE (1.5 g HBPE/kg). After 56 days, rainbow trout fed the 0.5HBPE and 1HBPE diets displayed significantly higher weight gain (49.58 and 53.25 g) and protein efficiency (2.88 and 2.83) compared to those fed the control diet (4.89 and 2.05), respectively (p  p  p  p  Aeromonas hydrophila was exposed to different dosages of HBPE, a higher inhibitory zone resulted from 1,000 and 1,500 mg/ml dosage. The lower levels of plasma cortisol were observed in the 1HBPE and 1.5HBPE groups after the complement stress test. Collectively, the present findings suggest that the 1HBPE diet supported superior growth, flesh quality, immunity and stress response of rainbow trout.

Item Type:	Article
Authors/Creators:	Asgari, M and Kenari, AA and Esmaeili, M and Rombenso, A
Keywords:	aquaculture, herbal medicines, honeybee pollen, immune response, omega 3
Journal or Publication Title:	Aquaculture Nutrition
Publisher:	Wiley-Blackwell Publishing Ltd.
ISSN:	1365-2095
DOI / ID Number:	https://doi.org/10.1111/anu.13098
Copyright Information:	Copyright 2020 John Wiley & Sons Ltd
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