Supplementation with Organic or Inorganic Selenium

Authors: Nurhan Sahin Muhittin Onderci Kazim Sahin Omer Kucuk

Publish Date: 2008/01/15

Volume: 122, Issue: 3, Pages: 229-

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Abstract

The present study was carried out to determine the effects of different sources of selenium Se sodium selenite Na2SeO3 or selenomethionine SeMet supplementation on egg production egg quality levels of malondialdehyde MDA and Se in serum and egg yolk in heatstressed Japanese quail Coturnix coturnix japonica The birds n = 360 55 days old were randomly assigned to 12 treatment groups consisting of six replicates of five birds each in a 2 × 2 × 3 factorial arrangement of treatments temperatures selenium sources selenium levels Birds were kept in wire cages in a temperaturecontrolled room at either 22 thermoneutral or 34°C heat stress for 8 h/day 0900–1700 till the end of study and fed a basal control diet or the basal diet supplemented with either 015 or 030 mg of Na2SeO3 or selenomethionine/kg of diet Heat exposure decreased live weight feed intake feed efficiency egg production and egg quality when basal diet was fed P  00001 A linear increase in feed intake P = 0001 and body weight P = 0001 egg production P = 0001 and improvement in feed efficiency P = 0001 and egg quality P = 0001 were found in Sesupplemented quail reared under heat stress conditions Serum egg white and egg yolk Se P ≤ 0001 concentrations increased linearly whereas serum liver and egg yolk MDA concentrations decreased linearly P = 0001 as dietary Na2SeO3 or SeMet supplementation increased An interaction between dietary Se sources temperature and levels of supplementation P ≤ 005 for these parameters was detected Supplementation with Se improved egg production egg quality and antioxidant status of birds and the effects of SeMet were relatively greater than Na2SeO3 in heatstressed quail Results of the present study suggest that supplementation with SeMet can be considered to be more protective than Na2SeO3 by reducing the negative effects of oxidative stress induced by heat stress in quail

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