Effects of increased content of organic selenium in feed on the selenium content and fatty acid profile in broiler breast muscle
2012
Kralik, Z., J.J. Strossmayer Univ., Osijek (Croatia). Dept. of Special Zootechnics | Kralik, G., J.J. Strossmayer Univ., Osijek (Croatia). Dept. of Special Zootechnics | Grcevic, M., J.J. Strossmayer Univ., Osijek (Croatia). Dept. of Special Zootechnics | Suchy, P., Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Ustav Vyzivy, Zootechniky a Zoohygieny | Strakova, E., Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Ustav Vyzivy, Zootechniky a Zoohygieny
The aim of this study was to determine the effects of organic selenium supplemented to broiler feed on the selenium concentration and fatty acid profile in broiler breast muscle tissue. The study was carried out on 60 male Ross 308 broilers that were slaughtered at the age of 42 days. After day 21, the broilers were divided into three experimental groups (P1, P2, P3). Each group was given separately prepared finisher diets that contained 18% of crude protein and 14.67 MJ/kg ME (finisher diet contained 6% of oil, of which 3% was sunflower oil, and 3% was linseed oil added for the purpose to increase the portion of alpha-linolenic fatty acid. The level of organic Se (Sel-Plex) supplemented in the finisher diet was as follows: no Se, 0.3 mg Se/kg and 0.5 mg Se/kg of feed for P1, P2 and P3 group, respectively. The group P3 had a significantly higher Se concentration in breast muscle (0.256 mg Se/kg) than group P2 (0.183 mg Se/kg) and P1 (0.087 mg Se/kg). Se supplemented to feed at the amount of 0.3 mg/kg affected the fatty acid profile in breast muscle tissue by increasing portions of alpha-linolenic, eicosapentaenoic, docosapentaenoic and docosahexaenoic acids and total n3 polyunsaturated fatty acids, and by lowering portions of total saturated and monounsaturated fatty acids.
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