Study Physiological Response to Adding different Levels of Maca Root Lepidium Meyenii to the Diet of Broiler Chickens exposed to Oxidative Stress

This experiment was conducted in the poultry field of the Department of Animal Production, College of Agriculture, Al-Qasim Green University for the period 1/10/ 2021 to 4/11/ 2021.The study aimed to know the effect of adding different levels of maca root Lepidium meyenii to the diet on some biochemical traits of the blood serum of broilers exposed to oxidative stress. In the experiment, 225 unsexed broiler chicks (Ross 308) were used, distributed randomly to 15 (cages), with 5 experimental treatments for each treatment 45 birds, and each treatment included three replicates for each replicate of 15 birds. The experimental treatments were as follows: The first treatment: the control treatment (basic diet + drinking water free of H2O2). The second treatment: a standard diet and water added to it H2O2 at a concentration of 0.5%, the third treatment: adding 1 gm of maca roots / kg of the basic diet + drinking water containing 0.5% H2O2, Fourth treatment: Add 1.5 gm of maca roots/kg of the basic diet + drinking water containing 0.5% H2O2 Fifth treatment: Add 2 gm of maca roots/kg of the basic diet + drinking water containing 0.5% H2O2. The most important results of the study can be summarized as follows: There was a significant improvement (P≤0.05) for the first, fourth and fifth treatments in total protein concentration compared to the second and third treatments, With regard to albumin concentration, the fourth treatment recorded a significantly improvement (p≤0.05) compared to the second and third treatments, and with regard to globulin concentration, the fifth treatment was significantly improvement (p≤0.05) compared to the second and third treatments. As for the concentration of liver enzymes ALT, AST, cholesterol, triglycerides, low-density lipoproteins and very low-density lipoproteins. The treatments (first, third, fourth and fifth) showed a significant decrease (p≤0.05) compared to the second treatment and a significant increase (p≤0.05) in the level of high-density lipoproteins.