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Health and welfare indicators of carps (Cyprinus carpio L.) broodstock in standard hatchery - a case report

Fish welfare is becoming one of crucial fields of interest for welfare scientist and producers. Therefore, we evaluated one procedure that included handling of carps in hatchery. The carps used for reproduction had multiple injuries of two different sources. The presence of parasite Argulus foliaceus in 75.00% of animals was closely connected with erythrodermatitis. The predominant injury was found on the caudal fin or trunk in 44.44% of subject animals, but abscess was rear (11.11% of animals). No correlations were found between the fish weight and the number of parasites, or the number of injuries it had. Since the procedure of sewing is possible to omit, that should be a defined in recommendation for best practice. Overall, the case report confirmed that the number of parasites and injuries could be considered as suitable predictor of a poor welfare.

fish; carp; welfare; broodstock; handling

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