Effects of Replacing Mineral Selenium Supplement with Selenium Nanoparticles on Blood Parameters of Dairy Calves

The purpose of this study was to investigate the effects of replacing mineral selenium supplements with nano selenium particles in the feeding of dairy calves and its effects on blood metabolites, and improving the growth performance and skeletal structure of infant calves. The number of 32 newborn Holstein calves with an average body weight of 37.85 ± 4.35 kg in the form of a completely randomized design with 4 treatments (eight calves in each treatment) for 83 days according to the supplemental consumption of milk or drinking water with sources Different selenium were placed. Treatments include: 1) inorganic selenium: providing 0.3 mg of selenium per kilogram of dry matter with sodium selenite, 2) low level of nano selenium: providing 0.15 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium, 3 (Medium level of nano-selenium: providing 0.3 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium, 4) High level of nano-selenium: providing 0.45 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium. The results showed that the calves that received nano selenium had no significant difference in the parameters of aspartate transferase and alanine transaminase compared to sodium selenite. The concentration of glutathione peroxidase in 42 days in nano selenium treatments increased and malondialdehyde decreased linearly significantly compared to mineral selenium (P=0.03). The results of this study showed that nano selenium was effective in improving the antioxidant status of calf blood during post-weaning.