00000nam 2200000zi 4500 9.880200 CaOODSP 20221107165722 m o d f cr ||||||||||| 191004e197408##bccd ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-bc En42-1/74-5E-PDF McLean, W. E., author. Ammonia and urea production of coho salmon under hatchery conditions / by W.E. McLean and F.J. Fraser. Vancouver, B.C. : Environmental Protection Service and Fisheries Service, Pacific Region, August, 1974. 1 online resource (vii, 61 pages) : charts. text txt rdacontent computer c rdamedia online resource cr rdacarrier Report ; EPS 5-PR-74-5 Digitized edition from print [produced by Environment and Climate Change Canada]. "Environmental Protection Service report series." Includes bibliographical references (pages 52-53). "Routine measurements of the ammonia and urea production of hatchery reared coho salmon have been carried out at the Big Qualicum River Experimental Hatchery. Concentrations of the major nitrogen excretory product, ammonia, follow a regular diurnal pattern. Urea nitrogen output is more variable and accounts for an average of less than 40 % of the nitrogen excretory wastes. A variety of hatchery conditions effect characteristic changes in ammonia production"--Abstract. gccst Salt water fish gccst Hatcheries gccst Environmental protection Fraser, F. J., author. Canada. Fisheries and Environment Canada. Canada. Environmental Protection Service. Pacific Region. Environmental Protection Service report series ; EPS-5-PR-74-5. (CaOODSP)9.866031 PDF 2.37 MB https://publications.gc.ca/collections/collection_2019/eccc/en42-1/En42-1-74-5-eng.pdf