Сравнение на анестезиращото действие на етерични масла от розмарин и камфор върху двугодишен шаран (Cyprinus carpio, Linnaeus, 1758). (Bulgarian)

The aim of the present research is to examine the efficacy of rosemary oil (Rosmarinus officinalis) and camphor essential oil (Cinnamomum camphora) by establishing the time needed for induction and recovery from anesthesia of two-year old common carp (Cyprinus carpio, Linnaeus, 1758). The fish treated with rosemary oil have an average body weight (BW, g) of 526.38±153.25 g and an average total length (TL, cm) of 34.72±3.84 cm. The fish used in the treatment with camphor oil have an average body weight of 557.20±196.74 g and an average total length of 36.20±4.0 cm. For each essential oil, four treatments are conducted, with four experimental concentrations: 0.20 ml/l -1 , 0.30 ml/l -1 , 0.40 ml/l -1 and 0.50 ml/l -1 . The method of individual treatment is applied. For each concentration, 10 fish are used to ensure statistical significance of the results. For both essential oils the fastest anesthetic effect is recorded at the highest concentration of 0.50 ml/l -1 with a significant difference between the variants (P≤0.05). At the highest concentration of rosemary oil anesthesia is achieved in 3.96±0.36 min, while at the same concentration of camphor oil the fish enter Phase 4 of complete anesthesia in 8.71±1.74 min. The process of recovery is faster at all experimental concentrations of rosemary oil. Based on the results, it can be concluded that the time required for anesthesia of two-year old common carp with rosemary oil is significantly shorter compared to the time required using camphor oil. During the experiment, it has been established that rosemary oil is significantly more effective as anesthetic agent for two-year old common carp compared to camphor oil. [ABSTRACT FROM AUTHOR]

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