Selected haematological changes in Clarias gariepinus (Burchell, 1822) infected with a Trypansosoma sp. from the Vaal Dam, South Africa

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Abstract

The use of haematological techniques to assess fish health is generally accepted. The aim of the current study was to determine selected haematological changes that occur in Clarias gariepinus (Burchell, 1822). infected with trypanosomes. Blood films were prepared according to standard techniques to confirm trypanosome infections and whole blood was collected, the serum and plasma separated, and prepared for albumin and total protein concentration analysis. Plasma albumin levels were significantly higher in infected wild caught fish than in uninfected wild caught fish and uninfected breeding stock. Serum albumin levels were significantly lower in infected wild caught fish when compared to uninfected breeding stock. The total plasma and serum protein levels were within the normal range for C. gariepinus, that is, 3 g - 6 g/100 mL. The total plasma protein levels varied significantly between the three groups. However, the total serum protein levels were only significantly different between uninfected breeding stock and uninfected wild caught fish, as well as uninfected breeding stock and infected wild caught fish. The total protein levels were significantly higher in infected wild caught fish than in the other groups, a possible indication of an infection or inflammatory host response. © 2013. The Authors.

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Ferreira, M. L., & Avenant-Oldewage, A. (2013). Selected haematological changes in Clarias gariepinus (Burchell, 1822) infected with a Trypansosoma sp. from the Vaal Dam, South Africa. Onderstepoort Journal of Veterinary Research, 80(1). https://doi.org/10.4102/ojvr.v80i1.572

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