Urea concentration in blood serum as a criterion for the diagnosis of protein and energy malnutrition in dairy cows.
2000
Reichel P. | Nagy O. | Kovac G. | Lehocky J. | Huska M. | Scurokova E.
This study wants to stress the changes and trends of chosen biochemical energy patterns (glucose, TCH, TG, TL, NEFA, ketone bodies); protein profiles (U, TP, Alb) and hepatic profiles (AST, ALT, GMT, ALP, CK, TBi);total bilirubin (TBi) within the blood serum of dairy cows retrospectively categorized according to urea concentration in the serum (2-3.5; 3.51-4.5; 4.51-5.5; >5.1 mmol/l) in dry cows, cows post partum and lactating cows. The results indicated that with a decrease in the concentration of urea in the blood of lactating cows there also occurred a decrease in the concentrations of TP, Alb, TCH, TG, whereas the concentrations of AST, ALP, TBi in cows post partum and lactating cows increased. The interaction between metabolic changes and the protein/energy supply to the body is discussed.
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