Blood serum chemistry measurements of normal and acutely stressed channel catfish.
1. An automated blood serum chemistry analytical system designed for human usage was employed to establish the levels of 26 different components present in sera obtained from various experimental groups of channel catfish. 2. Comparisons of samples from feral and commercial production pond fish during warm months indicated statistically significant differences in the serum levels of sodium, CO2, urea nitrogen, direct bilirubin, cholesterol, creatinine and protein. 3. Laboratory acclimated and production pond fish exhibited differences in serum electrolytes (sodium, potassium, chloride, phosphorus), serum metabolites (urea nitrogen, creatinine, triglycerides), serum enzymes [gamma-glutamyl transferase, glutamate-oxaloacetate transaminase (GOT), lactate dehydrogenase (LDH), alkaline phosphatase, and amylase], and serum iron. 4. Seasonal (temperature?) differences in production pond fish were noted for 12 serum components including potassium, magnesium, CO2, glucose, creatinine, albumin, iron, alkaline phosphatase, and glutamate-pyruvate transaminase (GPT). 5. Comparisons of samples obtained from laboratory-acclimated fish before and 18 hours after acute handling and transport stress revealed significant differences in only three serum parameters: glucose, LDH, and creatine phosphokinase (CPK). 6. These studies suggest that "normal" values established by any method of sera analysis may be different in the same species depending on the diet, season, and presence of environmental stressors.[1]References
- Blood serum chemistry measurements of normal and acutely stressed channel catfish. Ellsaesser, C.F., Clem, L.W. Comparative biochemistry and physiology. A, Comparative physiology. (1987) [Pubmed]
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