Status of selenium and correlation with blood GSH-Px in goats and their kids in organic breeding fed with different levels of organic selenium

Abstract. The aim of this research was to determine how the supplement of organic selenium in the diet at different concentrations reflects on the content of blood Se and GSH-Px activity and their correlation in goats and their kids in organic breeding. The study included 24 Alpine goat breeds during lactation and their kids. Goats were divided into three groups depending on dietary treatments. Goats were fed with the cereals mixture 1 kg/per day in control group (C). Organic selenium supplied as selenised yeast in the first experimental group (E-I) 0.015 % and in the second experimental group (E-II) 0.030 % in cereals mixture. The addition of organic selenium significantly (P<0.01) increased blood Se of goats and kids in E-I and E-II groups in relation to C group and higher (P<0.05) in E-II in comparison with the E-I group. Concentrations of Se followed by GSH-Px activity, and were higher in the EI and E-II groups in comparison with C group. In the blood of suckling kids has determined higher (P<0.01) GSH-Px activity in E-I and E-II groups in relation to C group. It was also determined higher GSH-Px in the blood of kids E-II group compared to the EI group. Significant correlations was found between Se levels and GSH-Px activity in goats and kids, but were significant only in the goats of E-II group. The results obtained concentration of Se and GSH-Px in the blood goats and kids showed the validity of adding prganic selenium into food in organic breeding.