In collaboration with Scientific Association of Iranian Medicinal Plants

Document Type : Research Paper

Authors

1 M.Sc. Student, Department of Animal Science, Faculty of Agriculture, University of Urmia, Urmia, Iran

2 Department of Animal Science, Faculty of Agriculture, University of Urmia, Urmia, Iran

Abstract

Two hundred and twenty day-old male broiler chicks (Ross 308) were randomly used in five groups to investigate the effects of sodium nitrate consumption or different levels of 0, 0.2, 0.4 and 0.6% thyme (Thymus vulgaris L.) extract along with sodium nitrate in drinking water on growth, carcass characteristics and some blood indices. No significant differences were observed between the treatments for body weight gain, feed consumption and feed conversion ratio during the whole experiment period (p>0.05). Thyme extracts or nitrate consumption had no effect on blood glucose, cholesterol and triglyceride and aspartate amino transferase (p>0.05). Nitrate consumption increased the blood HDL content as compared to control (p<0.05); however, thyme extract at concentrations of 0.2 and 0.4% along with nitrate decreased the blood HDL content (p<0.05). Moreover, proportional weights of the thigh, breast, liver, heart, lung, spleen and abdominal fat were not affected by dietary treatments (p>0.05). Totally, thyme extract consumption had no effect on the performance of chickens consuming nitrate but it decreased blood HDL level by reducing the oxidation of LDL.

Keywords

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