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Biotransformation and kinetics

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Administrative data

Endpoint:
biotransformation and kinetics
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
abstract

Data source

Reference
Reference Type:
publication
Title:
Respiratory gas exchange, nitrogenous waste excretion, and fuel usage during starvation in juvenile rainbow trout, Oncorhynchus mykiss
Author:
Lauff RF and CM Wood
Year:
1996
Bibliographic source:
Journal of Comparative Physiology B volume 165, pages542–551(1996)

Materials and methods

Principles of method if other than guideline:
Oxygen consumption, CO2 excretion, and nitrogenous waste excretion (75% ammonia-N and 25% urea-N) were measured daily in 4-g rainbow trout over a 15-day starvation period.
GLP compliance:
no
Type of medium:
animal

Test material

Constituent 1
Chemical structure
Reference substance name:
Urea
EC Number:
200-315-5
EC Name:
Urea
Cas Number:
57-13-6
Molecular formula:
CH4N2O
IUPAC Name:
urea
Details on test material:
It is assumed that the purity is 100%

Results and discussion

Any other information on results incl. tables

Nitrogenous waste excretion (75% ammonia-N and 25% urea-N) were measured daily in 4-g rainbow trout over a 15-day starvation period.

Applicant's summary and conclusion

Conclusions:
Nitrogen excretion accounts for about 25% in form of urea in juvenile (4 g) rainbow trout .
Executive summary:

Nitrogenous waste excretion (75% ammonia-N and 25% urea-N) were measured daily in 4-g rainbow trout over a 15-day starvation period.