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Journal Article 
The chemical composition of settleable solid fish waste (manure) from commercial rainbow trout farms in Ontario, Canada 
Naylor, SJ; Moccia, RD; Durant, GM 
North American Journal of Aquaculture
ISSN: 1522-2055
EISSN: 1548-8454 
BIOSIS COPYRIGHT: BIOL ABS. The chemical composition of settleable faecal fish waste was determyined from fresh manure samples collected at 12 commercial farms growing rainbow trout Oncorhynchus mykiss in Ontario, Canada. The manure samples from the commercial farms averaged 2.83% nitrogen (N), 2.54% phosphorus (P), 0.10% potassium (K), 6.99% calcium (Ca), and 0.53% magnesium (Mg) on a dry-weight basis. The concentrations of the metals, arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), iron (Fe), mercury (Hg), mangan ost other livestock manures, but had lower levels of As, Se, Co, and Ni. The copper (Cu) content of fish manure was similar to all other livestock manures. The results from this study indicate that fresh fish manure is similar in its chemical composition to other livestock manures, and should be suitable for use as an agricultural fertilizer. In addition, it is hoped that these data will also help regulatory agencies and farmers make sensible and pragmatic decisions concerning th 
General Biology-Conservation; Ecology; Public Health: Environmental Health-Sewage Disposal and Sanitary Measures; Chordata; Osteichthyes 
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