EFFECT OFADDINGTHE ANTIOXIDANTS ON SOME BIOCHEMICAL BLOOD PLASMATRAITS OF BROWN LAYER DURING HOT SEASON IN IRAQ

Abstract

Abstract During the hot season in Iraq (June, July and August) the ambient temperature inside the Layer house reached 39 Celsius, this condition put the layer in heat stress condition which resulted decreasing layer performance by increasing the oxidative damage of some biological traits of blood, so , adding antioxidants (synthetic and natural) could moderate this condition, this hypothesis was tested in field experiment lasted for 12 weeks (84 days), by using 200 Lohman brown layer at 34 wks of age , the hens were distributed into 5 treatments (40 hens/treatment) with 4 replicates / treatments and 10 hens/ replicate , the first treatment was the control with no antioxidant added to ration, whereas, synthetic antioxidants (vit. C and E) were added at rate of 300 mg/kg of feed in 2nd and 3rd treatment, in 4th and 5th treatments the natural antioxidants (grape seeds and rosemary leaves) were used at rate of 5 g/kg of feed. The results of the experiment revealed that adding both types of antioxidants significantly decreased the glucose, triglycerides, total cholesterol and Non HDL in blood plasma, whereas, a significant increase in the total protein, albumen and HDL in blood plasma of hen consumed diet having antioxidant as compared with the control treatments. It can be concluded that adding antioxidant leads to protect the glucose, lipid profile and proteins in blood plasma from damaging by antioxidant during heat stress.