Koncentracija Ca, P I Mg u serumu kod krava simentalske rase sa različitih geografskih područja

The aim of this paper is to examine the concentration Ca, P and Mg in serum of Simmental cows from different geographic areas (lowland and mountain). Total number of animals tested was 42 healthy cows, by 21 at each farm, aged 3-5 years. The researches were carried out in two periods: autumn-winter (November-December 2008), and repeated in spring (April-May 2009) on the same cows. The concentration of Ca, P and Mg in the blood (serum) from both locations was significantly higher in spring than in winter, but do not exceed the physiological value.Cilj ovog rada je da se ispita koncetracija Ca, P i Mg u serumu kod krava simentalske rase sa različitih geografskih područja (ravničarsko i planinsko). Ukupna broj ispitivanih životinja je 42 zdrave krave, po 21 na svakoj farmi, starosti 3-5 godina. Istraživanja su provedena u dva perioda: jesen-zima (novembar-decembar 2008), te ponovljena na istim kravam u proljeće (april-maj 2009). Koncentracija Ca, P i Mg u krvi (serumu) sa oba lokaliteta je značajno viša u proljeće nego u zimu, ali ne prelazi fiziološke vrijednosti