nitrogenous waste


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nitrogenous waste

the waste nitrogen produced during METABOLISM. Initially this is often in the form of AMINO ACIDS, but few animals can excrete these directly. Many invertebrates and aquatic vertebrates eliminate nitrogen as ammonia, but this would be toxic if excess water were not available. Marine teleost fish excrete TRIMETHYLAMINE OXIDE, which is nontoxic and requires little water for elimination. Mammals, turtles and amphibians excrete UREA, and land reptiles, snails, insects and birds excrete URIC ACID from which water is removed before voiding it.
References in periodicals archive ?
Effective removal of metabolic nitrogenous waste substances like blood urea nitrogen and creatinine were observed in M-60 and M-100 dialyzer than HF-20 dialyzer, which could be due to surface areas and filtration properties of dialyzers.
Lipid peroxidation leading to decreas GFR(glomerular filtration rate) and to increase nitrogenous waste such as urea, uric acid and creatinine [26].
Water quality [temperature and dissolved oxygen (YS1 85 Oxygen, Conductivity, Salinity and Temperature meter), pH (Hanna Instruments HI 9025 microcomputer pH meter), salinity (Vista A366ATC refractometer), and nitrogenous waste (model AQ-4 LaMotte Salt Water Aquaculture Test Kit)] were monitored and adjusted as needed every other day, including weekends.
Excess protein can produce large amounts of nitrogenous waste in the intestine, some of which can be converted to the highly carcinogenic compounds, nitrosamines and ammonium salts.
Of particular concern is where calorie deficits increase the use of protein as an energy source, increasing production of nitrogenous waste. Reduced appetite and other gastrointestinal effects of uraemia can contribute to this state.
Nitrogenous waste can also come from uneaten food in the tank and hence fishes should never be fed more than what they will eat immediately, twice a day.
Nutri-Vet Green Grass and Grass Guard dietary supplements for dogs are formulated to neutralize nitrogenous waste and maintain a slightly acidic urine pH.
The approved patent, "Prebiotic and Probiotic Compositions and their Method of use for Gut-based Therapy," protects the composition and method behind the company's oral probiotic product formulation (Kibow Biotics) which may significantly reduce concentrations of several nitrogenous waste metabolites that accumulate in renal deficiency.
The primary nitrogenous waste products of protein, which are excreted by the kidneys, include urea nitrogen, creatinine, and uric acid.