This study evaluates the effects of Cannabidiol (CBD) on the haematological parameters of acutely stressed and non-stressed Nile tilapia (Oreochromis niloticus, Linnaeus), reared in a recirculating aquaculture system. O. niloticus were fed with and without CBD (0, 0.001, 0.002 and 0.003% of feed weight) and with and without hydrocortisone (0 or 0.01% of body weight) for 72 hours. This experiment compared blood glucose, haematocrit and protein levels of the plasma of the fish. Among the non-stressed groups, fish fed with the highest concentration of CBD showed to have less stress in terms of the stress parameters, while the highest stress was detected in the stressed group supplemented with no CBD. No significant difference in stress was observed between the different concentrations of CBD supplementation of fish in a 72-hour period.

中文翻译：

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CBD（大麻二酚）对体内急性应激下尼罗罗非鱼（Oreochromis niloticus，Linnaeus）血液学参数的影响

本研究评估了大麻二酚 (CBD) 对在循环水产养殖系统中养殖的急性应激和非应激尼罗罗非鱼（Oreochromis niloticus，Linnaeus）血液学参数的影响。尼罗罗非鱼分别喂食有和没有 CBD（饲料重量的 0、0.001、0.002 和 0.003%）以及有和没有氢化可的松（体重的 0 或 0.01%）72 小时。该实验比较了鱼血浆的血糖、血细胞比容和蛋白质水平。在非应激组中，喂食最高浓度 CBD 的鱼在应激参数方面表现出较小的应激，而在未补充 CBD 的应激组中检测到的应激最高。在 72 小时内，不同浓度的 CBD 补充鱼之间没有观察到压力的显着差异。