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The variability of biochemical parameters in blood serum and milk of Holstein cows regarding the age and health status

In order to determine the variability of biochemical parameters, blood and milk were sampled from 25 Holstein cows for a period of three months. The differences in the analyzed parameters due to the animal's health status (risk of acidosis or ketosis or normal health status ; defined according to the fat/protein ratio) and animal’s age (parity classes) were determined. The results of this research indicate the variability in biochemical parameters in both blood serum and milk as a result of variance in animals' health status and due to various age of animal implying that animals' response depends on animal age. Obtained results should be considered in the modelling for the prediction of metabolic disorders occurrence.

Holstein cows ; biochemical parameters ; milk ; blood ; metabolic disorders

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