RÉPONSE AU STRESS INDUIT PAR LE TRANSPORT CHEZ LA TRUITE ARC-EN-CIEL {ONCORHYNCHUS MYKISS).

Response of rainbow trout to transport stress has been studied in immature fish weighing 200 g. Hematocrite, blood plasma osmolarity, Cortisol and testosterone levels are significantly higher in transported fishes than in control. However, there is no change of gonadotropin (GTH1) and growth hormone plasma levels during and after the transport. Behaviour analysis in « open field » shows that the transported fishes became immobile later than the control. Zootechnical performance analysis of each group after two months shows that transported fishes recuperate quickly.

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