Expression data from corpora lutea from cows supplemented with different forms of selenium (Se). Expression data from corpora lutea from cows supplemented with different forms of selenium (Se)

The goal of this study was to test the hypothesis that sodium selenite (ISe) vs. a 1:1 blend (MIX) of ISe and SEL-PLEX in a basal vitamin-mineral (VM) mix would differentially alter corpora lutea transcriptome profiles in non-lactating beef cows. Predominately-Angus cows were randomly selected from herds of fall-calving cows consuming VM mixes that contained 35 ppm Se as ISe and MIX forms. Cows were depleted of Se for 45 d followed by a 45 d repletion period with ISe to bring all cows to Se adequate status. Cows were then randomly assigned to treatment (ISe, n=5; or MIX, n=5) with treatments administered for at least 90 days using in-pasture Calan gates. Corpora lutea samples were then collected on Day 7 post-estrus and examined for changes in global expression patterns by microarray analysis. Overall design: 10 total samples were analyzed (n=5 for both ISe and MIX)