engleski

Application of a compound mixture containing caprylic acid against Sparicotyle chrysophrii in gilthead sea bream

The therapeutic effect of a compound mixture containing mainly caprylic acid (200 mg/ kg fish), was evaluated in Sparicotyle chrysophrii-infected gilthead sea bream, Sparus aurata (197 g). The trial was carried out in a challenge environment at high water temperatures. Growth and gill parasitic load were measured in treated against control fish after a 10 week period. Differences in final weight, feed conversion ratio, specific growth rate and feed efficiency were not significant between the experimental groups. Although S. chrysophrii prevalence was not affected, total parasitic numbers were significantly reduced. In conclusion, the application of a mixture containing caprylic acid can significantly affect the evolution of S. chrysophrii infection in gilthead sea bream. No evident effect in respect to fish growth in the studied period was however apparent, potentially indicating the need for further improvement of the design of the alternative mixture. Funding of presentation: This work was made possible through a H2020-SFS-2014-2015 project entitled: ParaFishControl: Advanced Tools and Research Strategies for Parasite Control in European farmed fish. Grant agreement no: 634429.

sea bream , caprylic acid, monogenea

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