English to Russian Medical Medical: Pharmaceuticals

All animals went through a health check-up at the beginning and at the end of the study.
Cats were observed during 3,5 months (2 weeks for habituation, 4 weeks without supplementation and 8 weeks with supplementation), 5 cays per week.

Each data recording session took 10 minutes of detailed observation
per cat, by a trained observer providing a *continuous focal sample*.

This was a double blinded controlled study, where animals were randomly assigned to dietary supplementation of L-Trp starting at the 7"' week (13 cats took L-Trp dietary supplementation and 12 took a placebo dietary supplementation).