The effect of inorganic selenium supplementation on performance and serum selenium concentration in weaned pigs
1989
Trenkovski, V. (Institut za stocarstvo, Beograd (Yugoslavia))
Two replicates involving a total of 96 weaned piglets evaluated the efficacy of various inorganic selen levels on performance and serum selenium concentration over a 5 or 6 week postweaning period. Four-week--old weaned piglets were fed a 20% protein diet supplemented with 0, 0.1, 0.2 or 0.3 ppm selenium from Na SeO (sodium selenite). The basal diet contained a level of 0.134 ppm or 0.154 ppm Se and aproximately 20 I.O./kg vitamin E. Pigs were alloted by weigh, litter and sex to each treatment. From 4 pigs from each treatment, blood samples were taken. Selenium supplements had no signifficant effect on average daily gain, feed intake or feed conversion ratio during 5 or 6 weeks of experiment. Serum selenium increased linearly in response to increasing dietary selenium concentrations. There was found a positive corelation (0.844) between dietary selen level and serum selen concentration. When serum selen concentration was expressed in relation to dietary selen level to each treatment the resulting regression was linear, suggesting that selen retention in the postweaned pigs increased in direct proportion to the amount consumed.
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