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

Abstract

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.

U cilju utvrđivanja varijabilnosti biohemijskih parametara uzorkovani su krv i mleko od 25 holštajn krava u trajanju od tri meseca. Utvrđene su razlike u analiziranim parametrima u zavisnosti od zdravstvenog statusa životinje (rizik od acidoze ili ketoze ili normalnog zdravstvenog stanja; definisano prema odnosu masti/proteina) i starosti životinje (paritetne klase). Rezultati ovog istraživanja ukazuju na varijabilnost biohemijskih parametara u krvnom serumu i mleku kao rezultat varijanse zdravstvenog stanja životinja i zbog različite starosti životinja, što implicira da odgovor životinja zavisi od starosti životinje. Dobijene rezultate treba uzeti u obzir pri modeliranju za predviđanje pojave metaboličkih poremećaja.