Nitrogen Excretion And Defense Against Ammonia Toxicity

作者: Shit F. Chew , Jonathan M. Wilson , Yuen K. Ip , David J. Randall

DOI: 10.1016/S1546-5098(05)21008-7

关键词: Ammonia productionProtein metabolismDeaminationAmmoniaMetabolismBiologyBiochemistryExcretionCatabolismTransamination

摘要: Publisher Summary Ammonia is mainly produced in fish through catabolism of amino acids. Ingested proteins are hydrolyzed producing acids, the which leads to release ammonia. production takes place liver but other tissues also capable doing so. by transamination acids followed deamination glutamate and adenylates muscle during severe exercise. Most aquatic animals keep body ammonia levels low simply excreting excess digestion metabolism. The dietary protein requirement increases at higher temperatures, possibly due increased oxidation reviewed effects temperature on nitrogen metabolism concluded that as an increasing percentage aerobic was fueled protein. That is, with both metabolic rate a switch greater utilization. However, this conclusion based studies temperate fishes and, therefore, may not be applicable tropical fishes. Tropical show marked increase food intake excretion effect known.

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