Dietary naringin supplementation on hepatic yolk precursors formation and antioxidant capacity of Three-Yellow breeder hens during the late laying period

Individual and Combining Effect of Adding Astaxanthin and Magnolol Compared to Vitamin E to the Diet on Productive Performance and some Indicators of Oxidative Stress and Liver Enzymes in Laying Hens Serum

“…Antioxidants also have a major role in regulating the representation of body fat and this in turn encourages the deposition of substances necessary for the growth of ovarian follicles and thus this is reflected in increased egg production [22,38]. The balance of the redox process in the liver is of great importance for the formation of the yolk precursor, as it was found that antioxidants have a role in encouraging and accelerating the release of the yolk precursor Vitellogenin from the liver to the ovary by protecting the cell membranes of hepatocytes from oxidative damage that results from free radicals, and this leads to preventing damage and damage In the membranes of liver cells, which occurs due to oxidation and the maintenance of cellular metabolic functions on a regular basis and this leads to an increase in the speed of the yolk deposition process in the developing eggs and increases the mass of the egg and its maturation is faster and this is reflected in improving the level of egg production and quality [39,40], Therefore the improvement in the productive performance of the laying hens of the natural antioxidants treatments (astaxanthin and magnolol) compared to the synthetic antioxidants treatment (vitamin E) and the control treatment without any addition in particular in our study may be attributed to their high efficiency as natural antioxidants, as they have a role outside the body in protecting the provided diets by protecting the fats and PUFA from oxidation and rancidity by inhibiting the peroxidation of the fats and curbing the free radicals that attack them, which cause a serious decrease in the nutritional value of the fat and also cause a significant decrease in the ability to utilize energy as it prevents the separation of hydrogen atoms from the double bonding site In PUFA thereby preventing the occurrence of oxidation and lipid peroxidation, and works to increase the utilization of the fats present in the diet and benefit from the energy liberated from fat metabolism, and thus this is reflected in improving the efficiency of food conversion in favor of natural antioxidants [41][42][43], it was also found that ovulation occurs with a mechanism similar to the inflammatory reaction and is accompanied by oxidative stress that may underlie the mechanism of ovarian aging and increased rates of programmed cell death, which may lead to dysfunction in the organs of the body therefore adding antioxidants such as astaxanthin and magnolol to diets has an important role in reducing apoptosis and aging Cells [44][45][46][47].…”