Bioactive Element Biodistribution of Different Biological Substrates in Sheep and Goats

The production and reproduction of small ruminants, such as sheep and goats, living under extensive range-grazing conditions may be influenced by the availability of nutrients and the mineral content of forage. This study evaluated the biodistribution of calcium (Ca), copper (Cu), iron (Fe), magnesium (Mg), manganese (Mn), sodium (Na) and zinc (Zn) in whole blood, serum, blood clots, plasma, plasma sediments and hair in sheep and goats. Forty clinically healthy, nonpregnant female sheep and goats were enrolled in the study. Hair and blood samples were performed in duplicate to assess mineral concentration in biological substrates using a Thermo Scientific iCAP- Q ICP-MS spectrometer (Omaha, Ne, USA). Higher levels of Ca, Cu, Fe, Mg, and Na were observed in blood and blood clots than in serum, plasma, plasma sediments and hair in sheep and goats. A significant effect of species was observed for all the bioactive element concentrations in the investigated substrates (<i>p</i> < 0.05). The results revealed positive correlations between serum and plasma for all investigated elements in sheep (<i>p</i> < 0.0001) and for Mn and Na in goats (<i>p</i> < 0.001), as well as between serum and blood for Ca, Fe, Mg and Mn in sheep (<i>p</i> < 0.0001) and for Ca and Mn in goats (<i>p</i> < 0.001). Plasma and blood showed a positive correlation for Ca, Fe, and Mn (<i>p</i> < 0.001) in sheep, and for Fe, Mn, Na, and Zn (<i>p</i> < 0.0001) in goats. These findings elucidate differences in biodistribution between sheep and goats, offering valuable insights for livestock production.