Use of Artemisia campestris (L) on Treatment of Spironucleosis Infection in Rainbow Trout (Oncorhynchus mykiss)

The aim of the present study was to determine the in vivo antiparasitic activity of the Artemisia campestris (L) ethanol extracts for control of Spironucleosis (Hexamitiasis) in rainbow trout (Oncorhynchus mykiss). Treated rainbow trout with an average weight of 1.5-2.0 g, were fed with 7 and 21-day periods with the addition of plant extracts of 1.0, 1.5, 2.0, 2.5 and 3.0 g / kg. The composition of ethanol extract of A. campestris (L) was analyzed by GC-MS and the major components were acenaphthylene 1,2–dihydro (62.70%), n-octadecane (4.66%), capillin (4.95%), curcumene (4.45%), 2.4-pentadiynylbenzene (7.28%), benzaldehyde (2.53%), methacrolein (1.35%). The results of the present study showed that cumulative mortalities were decreased in all treatment groups and positive control, compared to the negative control (p<0.05). It was determined that 21-day treatment was more effective than 7-day treatment on the intensity and prevalence of infection. These results suggested that the ethanol extract of A. campestris (L) displayed the antiparasitic activity against S. salmonis