Effect of replacing inorganic by organic selenium sources in diet of male broilers on selenium and vitamin E contents and oxidative stability of meat

Abstract

An experiment was conducted to assess the effects of replacing Sodium Selenite (SS) by Se-Yeast (SY) in diet on selenium and Cα-tocopherol contents mmale broilers tissue and it's oxidative stability. One day old 240 male birds were randomly assigned to 4 treatments with 4 replicates of 15 birds each. The experimental grower diets that were supplemented with SS or SY at 0.3 mg se kg-1 of feed, as follows: Tl = 0.3 SS, T2 = 0.2 SS+0.1 SY, T3 = 0.1 SS + 0.2SY and T4= 0.3 SY were given adlibitum to the birds during a 21 days old grower period. The basal diet was also supplemented with 75 mg of vitamin E. SY enrichment of grower diets increased (p<0.05) both contents of Se and vitamin E in breast and thigh tissues and their subsequent oxidative defence in birds compared to those fed diets supplemented with SS alone. Also, the replacing SY in the diet reduced Malondialdehyde (MDA) values in breast samples after 0, 3 and 5 days of chilled storage (4-6° C). Therefore, the replacing SS by SY in broilers diets protected with a strong natural antioxidant were more effective in Se-enrichment of tissues plus the oxidative stability of stored meat. © Medwell Journals, 2010.