List of Articles گوساله هلشتاین

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  1 - Effects of Replacing Mineral Selenium Supplement with Selenium Nanoparticles on Blood Parameters of Dairy Calves
  Mohammad Karimi mehdi Ganjkhanlou farhang fatahei
  10.22034/ascij.2023.2003506.1572
  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 cal More

  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. Manuscript profile
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  2 - Effects of Replacing Mineral Selenium Supplement with Selenium Nanoparticles on Feed Digestibility and Ruminal Parameters of suckling Dairy Calves
  Mohammad Karimi mehdi Ganjkhanlou farhang fatehi
  10.22034/ascij.2023.1999716.1556
  This study aimed to investigate the effects of replacing mineral selenium supplement with nano-selenium particles in feeding infant calves and its effects on nutrient digestibility and, rumen fermentation characteristics. The number of 32 newborn Holstein calves with an More

  This study aimed to investigate the effects of replacing mineral selenium supplement with nano-selenium particles in feeding infant calves and its effects on nutrient digestibility and, rumen fermentation characteristics. 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) mineral selenium: providing 0.3 mg of selenium per kilogram of dry matter with sodium selenite source, 2) Low level of nano selenium: providing 0.15 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium source, 3 (Medium level of nano-selenium: providing 0.3 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium source, 4) High level of nano-selenium: providing 0.45 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium source. The results showed that improve the digestibility of protein and insoluble fibers in neutral detergent with nano-selenium. Ruminal ammonia nitrogen concentration in calves fed with rations supplemented with nano-selenium tended to decrease (p = 0.08) in a quadratic way, and its average level was the lowest. Acetate concentration for calves fed nano-selenium decreased (p < 0.01), while propionate concentration increased (p < 0.05) for calves fed nano-selenium. The results of this study showed that nano-selenium was effective in improving feed digestibility. Manuscript profile