scholarly journals Effect of lethal and sub- lethal concentrations of glyphosate on some biochemical parameters and growth responses of African catfish (Clarias gariepinus)

2014 ◽  
Vol 6 (2) ◽  
pp. 47-54
Author(s):  
Abdulkareem I. ◽  
Lawal O. ◽  
Moyebi D.
Animals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2266
Author(s):  
Markéta Prokešová ◽  
Milena Bušová ◽  
Mahyar Zare ◽  
Hung Quang Tran ◽  
Eliška Kučerová ◽  
...  

In the present study, a possible nature immunostimulant and growth promoter—humic substances (HS) originating from Siberian leonardite mineraloid—were tested on juvenile Clarias gariepinus performance. Feed additive was applied onto commercial pelleted feed at four HS levels—0, 1, 3, and 6% w/w (HS0, HS1, HS3, HS6, respectively). Diets were tested in five repetitions (in total, n = 1800 individuals, mean body weight 28.1 ± 6.2 g) for 56 days. Growth and production parameters, fish condition and somatic indices, and overall mortality were evaluated after 14, 28, 42, and 56 days of exposure. Whereas, plasma samples were collected only after 0, 28, and 56 days, when fish health status was assessed with biochemical parameters (total proteins, TP; alanine aminotransferase, ALT; aspartate aminotransferase, AST; lactate dehydrogenase, LDH; cholesterol, CHOL; triglycerides, TAG) and fish antioxidant status with glutathione (reduced glutathione, GSH; oxidized glutathione, GSSG; glutathione ratio GSH/GSSG). Although a significantly positive effect of HS feed additive on growth performance was not found in the present study, moderately positive effects were found regarding biochemical parameters (ALT, AST, LDH, CHOL, and TAG) and antioxidants (GSH/GSSG ratio) that were improved especially in the HS3 group.


Author(s):  
O. I. Azeez ◽  
S. F. Braimah

Copper sulphate is widely used not only in livestock production especially in the treatment of foot rot in small ruminants but also in aquaculture as algaecide and an ectoparasiticide in hatcheries. Meanwhile, it is a common environmental contaminant of water bodies, with carcinogenic, mutagenic and teratogenic effects in humans and animals. The present study was therefore designed to evaluate the toxic effects of copper sulphate and the protective activities of vitamin E on haematological and biochemical parameters as well as oxidative stress status in the African catfish (Clarias gariepinus) Sixty juvenile African catfish with an average weight of 120g were used for the study. They were assigned into six groups (A-F) consisting of ten fish per group. Group A served as the control group and was fed with normal pelletized fish feed only, group B was fed with Vitamin E-supplemented feed only, groups C and D were exposed to copper sulphate (20mg/L and 5mg/L) respectively, plus normal pelletized fish feed while groups E and F were exposed to copper sulphate (20mg/L and 5mg/L), respectively, plus Vitamin E-supplemented feed (240mg/kg feed). Blood samples were collected for haematology and plasma biochemical parameters while gills, liver and kidney samples were collected for evaluation markers of oxidative stress. Exposure to copper sulphate led to a significant decrease in PCV, RBC, Hb concentration, MCV, MCH and total WBC when compared with the unexposed control and those fed with vitamin E-supplemented feed. Furthermore, exposure to copper sulphate caused liver and kidney damages and cell impairment by increasing plasma ALT, AST and ALP activities. It also led to increased oxidative stress as the concentrations of antioxidant endogenous enzymes - GPx, GST and GSH were depleted while potentiating lipid peroxidation and hydroxyl radical generation. The changes in the haematological, biochemical and antioxidant parameters were restored in the fish fed with vitamin E-supplemented feed. In conclusion, the study showed that exposure to copper sulphate is toxic to African catfish, causing anaemia and liver damage through free radical generation and depletion of antioxidant defence system. Vitamin – E supplementation is therefore recommended during the use of CuSO4 in aquaculture. Release of the compound to the environment must however be avoided at all cost.


2021 ◽  
Vol 37 (2) ◽  
pp. 117-126
Author(s):  
Abdel-Hay Abdel-Hay ◽  
Monira Elsawy ◽  
Wasseem Emam ◽  
Wael Eltras ◽  
Radi Mohamed

This study contributes data on haematological and biochemical parameters of African catfish, Clarias gariepinus. It employed a 3 ? 2 factorial design with three ponds of different water depth (0.5, 1 and 1.5 m) and two types of feed (floating and sinking). Twelve earthen ponds (1 m x 2 m) were stocked with 16 fingerlings catfish each (mean weight ~100g) and their blood parameters were monitored over 12 weeks. Differences in hematological parameters related to water depth were mostly significant, and better results were recorded in fish reared in shallower water ponds. Feed type showed improved hematological parameters with using of sinking diet. Most biochemical parameters showed significant differences in pond waters depth and feed type with better results coincided with rearing fish in shallower water depth and with sinking feed. Conclusively, culturing Catfish in shallow ponds (0.5 m) and use of sinking feed improve physiological response and health condition.


2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Achikanu CE ◽  
Ani ON

The present study investigated the effects of sublethal concentrations of dichlorvos on liver marker enzymes (aspartate aminotransferase, alanine aminotransferase and alkaline phosphatase), acid phosphatase (ACP), serum total protein (STP), bilirubin, urea and creatinine in African Catfish (Clarias gariepinus) juveniles at sub acute period under laboratory conditions. A total of 90 juveniles of Clarias gariepinus with average weight and length of 200.15 ± 0.09g and 26.00 ± 0.00cm respectively were kept in three experimental groups of 30 per group in triplicate of 10 fishes. Groups 1 and 2 were exposed to dichlorvos at dosages of 21 and 43mg/l respectively and group 3 served as control for 15 experimental days. Analyses were carried out on days 1, 5, 10 and 15. From the results, there was no significant changes in the biochemical parameters tested on day 1 of the experiment but levels of the liver enzymes, ACP and bilirubin increased significantly (p<0.05) on other experimental days when compared with the control group. However, there was insignificant increase in the urea level and also a non-significant decrease in the creatinine and Serum total protein (STP) levels of the experimental groups when compared with the control group. From the analyses and observations made, we conclude that the administration of sublethal concentrations of dichlorvos to African catfish induced some damages to the liver which affected the levels of the liver enzymes and the increase in ACP level is indicative of carcinogenicity.


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