Influence of Feed Supplements to Selected Microelements in the Blood Calves

The aim of the study was to assess the dynamics of specific microelements in the blood of calves in particular farm depending on the influence of selected feed supplements. In the first and in the second experiment the calves were divided in to four groups-3 experimental and one control. Experimental groups were filed feed supplements to support active immunity according to the methodology in the first attempt over about 2 weeks, in the second for 3 weeks. Observed data and analysis were statistically evaluated and compared with each other. The first experiment was performed from August to November 2013, the second from November 2014 to January 2015.