Cadmium Sub-Lethal Concentration Effect on Growth, Haematological and Biochemical Parameters of Mystus seenghala (Sykes, 1839)
2022
Fazio, Francesco | Habib, Syed Sikandar | Naz, Saira | Hashmi, Mehmood Ahmed Husnain | Saoca, Concetta | Ullah, Mujeeb
The current study aims to assess the cadmium sub-lethal concentration influence on growth and haematological and biochemical parameters of Mystus seenghala. A total of 60 fish of three different length groups (20 each) were collected from Head Qadirabad, Pakistan. The fish were treated to the sub-lethal concentration viz. one-third of LC₅₀, for 16 weeks except for the control groups. Water quality parameters were kept constant during the entire course of the research, and the major parameters were measured as temperature (28.03 ± 0.03 °C), DO (5.82 ± 0.14 mg L⁻¹), pH (8.00 ± 0.01) and total hardness (249.98 ± 0.01 mg L⁻¹). Findings revealed that the growth of three treated variant length groups was affected negatively by cadmium exposure and showed significantly (P < 0.05) lower average wet weight, body length and condition factor as compared to control groups, while the feed conversion ratio (FCR) increases by increasing the exposure duration. The haematological parameters including values of Hct, Hb and MCHC were significantly (P < 0.05) reduced in all Cd-treated groups than control groups, whereas the level of MCH and MCV were significantly higher, but no significant difference was found in the value of RBCs in all treated groups. Biochemical parameters such as ALT, AST, total lipid and glucose level in Cd exposure groups were significantly higher, while the total protein level was significantly (P < 0.05) reduced in all treated groups as compared to control groups. From the current study, it has been concluded that the growth, haematology and biochemical parameters are important indicators of ecotoxicology particularly contamination of the cadmium and health of the fish.
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