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Studying protective effects of thymol on the growth factors of juvenile common carp following chronic mercury (II) chloride exposure | ||
| Iranian Journal of Veterinary Medicine | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 04 تیر 1403 اصل مقاله (877.35 K) | ||
| نوع مقاله: Original Articles | ||
| شناسه دیجیتال (DOI): 10.22059/ijvm.2024.375830.1005567 | ||
| نویسندگان | ||
| Hooman Rahmati Holasoo* 1؛ Alireza Nassiri1؛ Mahdi Soltani1؛ Sara Shokrpoor2 | ||
| 1Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran. | ||
| 2Department of Pathobiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran | ||
| چکیده | ||
| Background Heavy metals are non-degradable pollutants, and mercury is one of the most important of them. Mercury can cause harmful effects on the fish, including reducing the growth rate. One of the most effective ways to reduce the side effects of heavy metals is to use herbal compounds or their active ingredients. Thymol is a natural monoterpene which is found in the essential oils of plants such as thyme. The positive effects of this substance have been proven to improve growth indicators in some fish, such as grass carp. Objectives This research was conducted to investigate the protective effects of thymol on the growth factors of juvenile carp exposed to mercury metal. Methods In the present study, 120 common carp (Cyprinus carpio) were randomly divided into 4 groups (control, HgCl2, thymol, and thymol+HgCl2), and each group was replicated three times and included 10 fish. At first, the initial weight of the fish (W0) was recorded, and then the fish were kept for 56 days. The fish in the control group were fed with basic food and kept in mercury (II) chloride-free water. During 56 days, the fish of the thymol and thymol+HgCl2 groups were fed with food containing thymol 100 mg/kg feed. The tank water of the fish of the thymol+HgCl2 and HgCl2 groups contained 0.44 mg/l mercury chloride. After 56 days, the final weight (Wt) of the fish was also measured, and the growth factors (absolute growth, absolute growth rate, SGR, FCR, and FCE) were calculated. Results The results of this research showed that thymol has a good protective effect on growth factors following chronic mercury exposure. Thymol in the thymol+HgCl2 group significantly improved absolute growth, absolute growth rate, and FCR compared to the HgCl2 group. Also, thymol led to a significant improvement in SGR and FCE factors, although there was no significant difference with the mercury group. Conclusions Therefore, it can be concluded that thymol can effectively reduce the side effects caused by mercury chloride exposure in common carp. | ||
| کلیدواژه‌ها | ||
| heavy metals؛ mercury chloride؛ growth indicators؛ thymol؛ common carp | ||
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آمار تعداد مشاهده مقاله: 61 تعداد دریافت فایل اصل مقاله: 125 |
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