Fuente y nivel de suplementación con selenio en gallina de postura comercial

Abstract

The effect of the source and level of supplementation with selenium on its concentration and shelf life of eggs of chickens of commercial position was evaluated. 672 38-week-old hens were used, distributed in a completely randomized experimental design in four treatments: T0 (diet + 0.4 mg Se.kg-1 with sodium selenite), T1 (diet + 0.2 mg Se.kg-1 with 2-hydroxy 4- methylselenobutanoic acid), T2 (diet + 0.3 mg Se.kg-1 with yeast enriched with selenium) and T3 (diet + 0.3 mg Se.kg-1 with acid 2-hydroxy 4-methylselenobutanoic). Significant differences (p > 0.05) between treatments were obtained for egg weight, feed intake, feed conversion, shelf life at a temperature of 24 °C and 4 °C, lipid peroxidation and selenium concentration in the egg at 14 and 56 days. It is concluded that the source of organic selenium 2-hydroxy 4-methylselenobutanoic acid contributed to reducing lipid oxidation, maintaining quality and increasing the concentration of the mineral in the egg. In addition, economic efficiency of S/ 0.013 and 0.024 was obtained for the source of organic selenium 2-hydroxy 4- methylselenobutanoic acid in treatments T1 and T3 relative to the control respectively.

Keywords

• sodium selenite
• selenomethionine
• 2-hydroxy 4-methylselenobutanoic acid
• haugh units
• lipid peroxidation