首页> 外文期刊>Veterinary Ireland Journal >Effects of cadmium at sub-lethal concentration on growth and biochemical parameters in rainbow trout Oncorhynchus mykiss
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Effects of cadmium at sub-lethal concentration on growth and biochemical parameters in rainbow trout Oncorhynchus mykiss

机译:亚致死浓度镉对虹鳟Onkihynchus mykiss生长和生化参数的影响

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摘要

Cadmium (Cd), as one of heavy metals and an environmental stressor, may alter many physiological processes like growth and serum parameters in fish. The main objective of this study was to determine the effects of cadmium at sub-lethal concentrations(1 and 3 ug/l) on growth and serum biochemical parameters including enzymes, i.e. alkaline phosphatase (ALP), aspartate aminotransferase (AST) and alanine aminotransferase (ALT), glucose, triglyceride, cholesterol and total protein in rainbow trout (Oncorhynchus mykiss). Trout were exposed to cadmium, and, at intervals of 1, 15, and 30 days, selected parameters were evaluated. Condition Factor (K), Specific Growth Rate (SGR) and Body Weight Gain (BWG) consistently decreased, while Food Conversion Ratio(FCR) increased at the end of experiment. Glucose was elevated in trout exposed to both Cd concentrations at day 15 and then returned to levels comparable to control fish. Triglyceride and cholesterol decreased transiently at day 15 and then increased atday 30. Total protein, AST, ALT and ALP increased linearly by time and Cd concentration. This investigation suggests that growth and serum biochemical parameters could be used as important and sensitive biomarkers in ecotoxicological studies concerningthe effects of metal contamination and fish health.
机译:镉(Cd)作为重金属和环境压力源之一,可能会改变许多生理过程,例如鱼类的生长和血清参数。这项研究的主要目的是确定亚致死浓度(1和3 ug / l)下的镉对生长和血清生化参数(包括酶,即碱性磷酸酶(ALP),天冬氨酸转氨酶(AST)和丙氨酸转氨酶)的影响。 (ALT),葡萄糖,甘油三酸酯,胆固醇和虹鳟鱼(Oncorhynchus mykiss)中的总蛋白质。鳟鱼暴露于镉中,每隔1、15和30天评估所选参数。实验结束时,条件因子(K),比生长速率(SGR)和体重增加(BWG)持续下降,而食物转化率(FCR)则增加。在第15天,暴露于两种Cd浓度的鳟鱼中的葡萄糖均升高,然后恢复至与对照鱼相当的水平。甘油三酸酯和胆固醇在第15天短暂下降,然后在第30天上升。总蛋白质,AST,ALT和ALP随着时间和Cd浓度线性增加。这项研究表明,生长和血清生化参数可以用作有关金属污染和鱼类健康影响的生态毒理学研究的重要且敏感的生物标记。

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