[en] The aim of this study was to assess the adverse effects of enrofloxacin (EF) on Tra catfish, Pangasianodon hypophthalmus, in relation with density stress. Fish were held at 40, 80 or 120 fish m(-3) and fed with pellets containing either 1 g kg(-1) EF or no EF. Antibiotic exposure lasted 7d and all fish were fed without EF for another 7-d recovery period. Fish were sampled at 3, 7, 8, 10 and 14 d after the beginning of EF exposure. Lipid peroxidation (LPO) and total glutathione (GSH) levels, catalase (CAT), glutathione-s-transferase (GST) and acetylcholine-esterase (AChE) activities were assessed in gill, brain, liver and muscle. At day 7, LPO levels in gills of EF-fish reared at low or high density were significantly more than 5-fold higher than their respective control. On the contrary, LPO in gills of EF-fish reared at medium density was significantly 3-fold lower than the control fish. Similarly, CAT activities in gills of EF-fish reared under low or high density were higher than in their control groups, while this activity was lower in EF-fish of the medium density group. AChE activities in muscles of EF-fish reared at low or high density were lower than controls at days 3 and 7, respectively. These results suggest that EF exposure may lead to disorders like lipid peroxidation and neural dysfunction in fish. However, when reared under lower stress condition (medium density), they may cope better with EF-induced stress than chronically stressed fish (low or high density).
Research center :
FARAH - Fundamental and Applied Research for Animals and Health - ULiège
Disciplines :
Animal production & animal husbandry
Author, co-author :
Wang, Neil; Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP
Nkejabega, Noemie; Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP
Hien, Nguyen-Ngoc
Huynh, Thi-Tu
Silvestre, Frederic; Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP
Phuong, Nguyen-Thanh
Danyi, Sophie ; Université de Liège - ULiège > Département de sciences des denrées alimentaires > Analyse des denrées alimentaires
Widart, Joëlle ; Université de Liège - ULiège > Département de pharmacie > Département de pharmacie
Douny, Caroline ; Université de Liège - ULiège > Département de sciences des denrées alimentaires > Analyse des denrées alimentaires
Scippo, Marie-Louise ; Université de Liège - ULiège > Département de sciences des denrées alimentaires > Analyse des denrées alimentaires
Kestemont, Patrick; Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP
Huong, Do-Thi-Thanh
Language :
English
Title :
Adverse effects of enrofloxacin when associated with environmental stress in Tra catfish (Pangasianodon hypophthalmus).
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