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Comparative evaluation of the effectiveness of Shirazi thyme extract (Zataria multiflora) and trichlorophen in controlling external parasites of common carp (Cyprinus carpio)
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Mojtaba Rajabi kolvani   , Mehran Avakh keysami , Mohammad Rahanandeh |
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Abstract: (91 Views) |
Abstract
Fish farmers use chemical disinfectants to eliminate parasites in fish farming. To comparatively investigate the performance of the chemical drug Trichlorfon and the non-chemical Thyme on external parasites of common carp under laboratory conditions, pasteurized Shiraz Thyme extract with the active ingredient Thyme extract Thymol (1.111 mg in 100 mg) and Trichlorfon were used in twelve aquariums with 50 common carp fingerlings under standard farming conditions. The carp were examined for external single-celled and multi-celled parasites. The fish were treated in 8 treatment groups and one untreated control group with 3 replicates at 48-hour intervals, including 3 Trichlorfon treatments (concentrations of 0.25, 0.5, 1 mg), 3 Thyme treatments (concentrations of 200, 300, and 500 ml), two combined treatments (200 ml Thyme plus 0.5 mg Trichlorfon and 500 ml Thyme plus 0.25 mg Trichlorfon), and one untreated control group. The results showed that Thyme not only sedated the fish but also caused the proliferation of parasites in various treatment conditions in this group of fish, and only the drug Trichlorfon was effective on external multi-celled parasites, which is consistent with the findings of other researchers.
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Article number: 5 |
| Keywords: Shirazi thyme, trichlorophen, dense farming, common carp (Cyprinus carpio). |
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Full-Text [PDF 501 kb]
(42 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2025/09/17 | Accepted: 2025/12/30 | Published: 2025/12/30
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