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Articles by J. Auta
Total Records ( 9 ) for J. Auta
  E. Ogueji Okechukwu and J. Auta
  The impact of long-term exposure to waterborne lambda-cyhalothrin on Clarias gariepinus was evaluated through changes of selected biochemical parameters. Fish was exposed to 0.0004, 0.0008 and 0.0016 mg L-1 for 8 weeks. The parameters measured were serum glucose, protein, cholesterol, triglyceride, glutamic pyruvic acid transaminase (GPT), Glutamic Oxaloacetic acid Transaminase (GOT) and alkaline phosphatase (ALP).There was significant (p< 0.05) alterations between the control values and the exposed groups on all parameters except GOT. The alterations in all parameters was significantly (p< 0.05) dose and time dependent.
  J. Auta and E.O. Ogueji
  The effect of sub lethal concentrations 1.03, 2.07 and 4.13 mg L-1 of the organophosphorus insecticide dimethoate on growth, nutrient and body composition of the fish O. niloticus were studied in the laboratory. The growth rates were significantly reduced in fish exposed to sub-lethal concentration of pesticide. The food utilization showed that the control fish gave the best FCR, PER, APP, NPU and PPV, all which were significantly higher (p<0.05) than the group of fish exposed to the toxicant. Similarly, the percentage protein, carbohydrate and lipid of the control fish after feeding period were significantly higher than in the exposed fish (p<0.05). The study shows that dimethoate causes various physiological disorders in this fish. Therefore, the usage of this pesticide around water bodies should be monitored and controlled.
  E.O. Ogueji and J. Auta
  The impact of short-term exposure to waterborne lambda-cyhalothrin on Clarias gariepinus was evaluated through changes of selected biochemical parameters. Fish was exposed to 0.008, 0.009 0.010, 0.011 and 0.012 mg L-1 and control for 96h. The parameters measured were serum glucose, protein, cholesterol, triglyceride, Glutamic Pyruvic acid Transaminase (GPT), Glutamic Oxaloacetic acid Transaminase (GOT) and Alkaline Phosphatase (ALP).There was significant (p<0.05) alterations between the control values and the exposed groups on all parameters. The alterations in all parameters was significantly (p<0.05) dose dependent.
  A.J. Yaji and J. Auta
  The effects of sub-lethal concentractions, 2.51, 5.02 and 10.04 mg L-1 of monocrotophos on some haematological indices of Clarias gariepinus were investigated in the laboratory. The packed cells volume and TEC were significantly reduced (p>0.05) in fish exposed to the toxicant concentrations than in the control groups. However, the TLC, neutrophils and Lymphocytes were observed to be significantly higher (p<0.05) in the exposed fish compared to the control groups. The study shows that sublethal concentration of monocrotophos is harmful to Clarias gariepinus, therefore, the usage close to water bodies for fish production is dangerous.
  A.J. Yaji and J. Auta
  The effect of sub-lethal concentrations 2.51, 5.02 and 10.04 mg L 1 of monocrotophos (organophosphorus insecticide) on growth, nutrient and body composition of Clarias gariepinus were studied in the laboratory. The growth rates were significantly reduced in fish exposed to the toxicant compared with the control groups. The nutrient utilization showed that, SGR, FCR, FCE, FE, PER and NM were significantly higher (p< 0.05) in the control fish compared to the exposed groups. Similarly, the percentage crude protein and oil content were significantly higher (p< 0.05) in the control than the exposed groups. The investigation revealed that, low concentration of monocrotophos causes various physiological effects in this fish. The usage of this insecticide near water bodies for fish production should be monitored and control.
  E. Ogueji Okechukwu , J. Auta and J.K. Balogun
  Static bioassay experiments were conducted to ascertain the acute effects of waterborne chlorpyrifos-ethyl at 0.64, 0.80, 0.96, 1.12 and 1.28 mg L 1 on a freshwater fish Clarias gariepinus after 96 h. The effects were assessed by examining the haematological profile against control. Exposure to chlorpyrifos-ethyl caused a significant dose dependent (p< 0.05) inhibition in haematocrit (PVC) and Haemoglobin (Hb) values. There was also a significant decrease (p< 0.05) of RBCC in 1.28 mg L 1 concentration. The WBCC elevation was significantly dose dependent (p< 0.05) in all concentrations except 0.64 mg L 1. The inhibition of MCH and elevation of MCHC were both Non-Significant (NS), but the inhibition of MCV was significant between control and exposed group (p< 0.05). The results of this study highlight the stress to which freshwater fish are exposed through the uncontrolled discharge of insecticides in the aquatic environment.
  S.M. Shallangwa and J. Auta
  The effect of sub-lethal concentrations 2.89, 3.62 and 4.83 mg L-1 of 2,4-Dichlorophenoxy-acetic acid (Cereal herbicide) on growth, nutrient and body composition of Clarias gariepinus were studied in the laboratory. The growth rates were sgnificantly reduced in fish exposed to the toxicant compared with the control groups. The nutrient utilization showed that, SGR, FCR, FCE, FE, PER and NM were significantly higher (p<0.05) in the control fish than the exposed groups. The investigation revealed that, low concentration of 2,4-D causes various physiological effects to the fish. The usage of this herbicide near water bodies where fish abound should be monitored and controlled.
  J. Auta and E.P. Anwa
  Qualitative determination of the nutritional and chemical composition of Albizzia lebbeck, an underexploited legume in Nigeria, was carried out. Seeds of Albizzia lebbeck were found to be rich in crude protein and carbohydrate but low in lipid content. The phytochemical screening of the seeds showed the presence of saponins and oxalate while tannins, cyanogenic glycoside and phytic acid levels were low. The seeds of this plant may serve as a cheap source of protein and carbohydrate in food supplements to animals.
  E.P. Anwa , J. Auta , S.A. Abdullahi and P.I. Bolorunduro
  Experiments were conducted to evaluate the nutritive value and anti-nutritional factors present in differently treated samples of Albizzia lebbeck collected from five locations in the Main Campus of Ahmadu Bello University, Zaria. Analyses carried out for proximate composition of these seeds showed high percentages of crude protein and low percentages of crude fibre in the raw and boiled samples than in the toasted and traditionally roasted samples. Overall mean levels of crude lipid was low in all the treatments. As regards the phytochemical screening, tannin levels were negligible and not significantly different (p 0.05) in all the treatments, while cyanogenic glycoside and phytic acid were low. Oxalate and saponin contents were high in the raw samples and in the other treatments appeared to show a trend on exposure to heat, reducing as the heat-time-exposure increased. The nutritional implications of the results are discussed.
 
 
 
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