Document Type : Research Paper

Authors

1 2Department of Animal Science, Higher Educational Complex of Saravan. P.O. Box: 99516-34145, Saravan, Sistan and Baluchestan, Iran

2 Department of Animal Science, Higher Educational Complex of Saravan. P.O. Box: 99516-34145, Saravan, Sistan and Baluchestan, Iran Baluche

Abstract

This experiment was conducted to evaluate the effects of supplementation of zinc and inorganic selenium in diets containing oxidized oil on performance, antioxidant enzymes activity, and meat quality of broiler chickens. A total of 480 day-old Ross 308 broiler chickens were randomly attributed into 12 treatments with four replicates each with 10 chickens in 2×3×2 factorial arrangement, includes: The thigh was dissected and muscles were removed to assess the malondialdehyde (MDA) content. The results showed that the birds’ average daily FI and FCR were not significantly influenced by dietary treatments. Inversely, the average daily BWG showed a significant difference among treatments over the experimental period (P <0.05). The birds received dietary Zinc at the level of 100 mg showed a higher activity of SOD enzyme (P <0.05). The lowest amounts of GPX was observed in birds fed diets containing oxidized oils, no dietary zinc and selenium at the level of 3.0 mg/kg. The highest and lowest levels of thigh meat MDA levels were noted in birds received diets containing oxidized oil with no dietary zinc and those had given fresh oil diets with supplementary zinc at 100 mg kg zinc and supplementary Se at 0.3 mg/kg, respectively. The results of this study revealed no synergistic effects between zinc and selenium on oxidative enzymes and MDA levels. It is recommended to supplement 100 mg / kg of zinc and 0.3 mg / kg of selenium to reduce the peroxidation effects of dietary oxidized oil.

Keywords

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