BACKGROUND: Human health may be improved if milk with a favorable fatty acid composition and Se concentration is ingested. The present study is to determine how a basal diet supplemented with daily 5 mg Se as Se-enriched yeast (SY) or sodium selenite (SS) affects the fatty acid composition and Se concentration of bovine milk. The effects of Se form on blood Se concentration, erythrocyte glutathione peroxidase 1 (GPx1) activity, serum GPx3 activity and milk yield and component were also studied. RESULTS: Both Se forms, when compared to control group, increased Se concentrations of blood (P < 0.01) and milk (P < 0.01), erythrocyte GPx1 activity (P < 0.05) and milk percentages of polyunsaturated fatty acids (PUFA) (P < 0.05) and cis-9,cis-12 linoleic acid (P < 0.05). Cows supplemented with SY had higher Se levels in blood (P < 0.01) and milk (P < 0.01) and percentage of PUFA in milk (P < 0.05) when compared with those supplemented with SS. Milk yield, milk component and serum GPx3 activity were not significantly affected by Se form. CONCLUSION: Supplementation of diet with SY appears to be of more benefit than SS in producing favorable milk with high PUFA and Se concentrations.
BACKGROUND:Human health may be improved if milk with a favorable fatty acid composition and Se concentration is ingested. The present study is to determine how a basal diet supplemented with daily 5 mg Se as Se-enriched yeast (SY) or sodium selenite (SS) affects the fatty acid composition and Se concentration of bovine milk. The effects of Se form on blood Se concentration, erythrocyte glutathione peroxidase 1 (GPx1) activity, serum GPx3 activity and milk yield and component were also studied. RESULTS: Both Se forms, when compared to control group, increased Se concentrations of blood (P < 0.01) and milk (P < 0.01), erythrocyte GPx1 activity (P < 0.05) and milk percentages of polyunsaturated fatty acids (PUFA) (P < 0.05) and cis-9,cis-12 linoleic acid (P < 0.05). Cows supplemented with SY had higher Se levels in blood (P < 0.01) and milk (P < 0.01) and percentage of PUFA in milk (P < 0.05) when compared with those supplemented with SS. Milk yield, milk component and serum GPx3 activity were not significantly affected by Se form. CONCLUSION: Supplementation of diet with SY appears to be of more benefit than SS in producing favorable milk with high PUFA and Se concentrations.
Authors: Elena A Sizova; Sergey A Miroshnikov; Svetlana V Notova; Olga V Marshinskaya; Tatiana V Kazakova; Alexey A Tinkov; Anatoly V Skalny Journal: Biol Trace Elem Res Date: 2021-09-02 Impact factor: 3.738
Authors: Bożena Muszyńska; Ewelina Szacawa; Dorota Bederska-Łojewska; Katarzyna Dudek; Bartosz Pomierny; Anna Włodarczyk; Katarzyna Kała; Jan Lazur; Piotr Suchocki; Bogusława Budziszewska; Dariusz Bednarek; Marek Pieszka Journal: PLoS One Date: 2020-05-21 Impact factor: 3.240
Authors: Stanisław Milewski; Przemysław Sobiech; Justyna Błażejak-Grabowska; Roman Wójcik; Katarzyna Żarczyńska; Jan Miciński; Katarzyna Ząbek Journal: Animals (Basel) Date: 2021-04-09 Impact factor: 2.752