Journal
JOURNAL OF TRACE ELEMENTS IN MEDICINE AND BIOLOGY
Volume 34, Issue -, Pages 79-89Publisher
ELSEVIER GMBH
DOI: 10.1016/j.jtemb.2016.01.001
Keywords
embryo; gestation; glutathione peroxidase; pig; pyridoxine; selenium
Funding
- Groupe Ceres Inc., Saint-Nicolas, Quebec, Canada
- Agriculture and Agri-Food Canada
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This study aimed to determine the effects of dietary pyridoxine and selenium (Se) on embryo development, reproductive performance and redox system in gilts. Eighty-four gilts were fed one of five diets: CONT) basal diet; MSeB(6)0) CONT + 0.3 mg/kg of Na-selenite; MSeB(6)10) diet 2 + 10 mg/kg of HCl-pyridoxine; OSeB(6)0) CONT+0.3 mg/kg of Se-enriched yeast; and OSeB(6)10) diet 4+10 mg/kg of HCl-pyridoxine. Blood samples were collected for long-term (each estrus and slaughter) and peri-estrus (fourth estrus d-4 to d+3) profiles. At slaughter (gestation d 30), organs and embryos were collected. For long-term and peri-estrus profiles, Se level and source affected (P < 0.01) blood Se concentration whereas B-6 level increased (P < 0.01) erythrocyte pyridoxal-5-phosphate concentration. A B-6 level (P < 0.05) effect was observed on long-term plasma Se-dependent glutathione peroxidase (Se-GPX) activity whereas periestrus Se-GPX was minimum on d-1 (P < 0.01). Selenium level increased sows' organs and embryo Se concentration (P < 0.01). Selenium source tended to enhance embryo Se content (P = 0.06). Within-litter embryo Se content was increased by B-6 level (P < 0.01). Selenium level tended to affect Se-GPX and total GPX activities in organs mitochondria (P = 0.09 and 0.07, respectively). Selenium source affected kidney ATP synthesis (P = 0.05). In conclusion, B-6 level affected the Se-GPX activity on a long-term basis, whereas the basal level of Se was adequate during the peri-estrus period. Embryo quality was not improved by dietary Se, and B-6 impaired within-litter homogeneity. Crown Copyright (C) 2016 Published by Elsevier GmbH. All rights reserved.
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