Overview of genes associated with egg productivity and resistance of domestic hen

At present, the most poorly understood factor affecting the quality of the eggs is the condition of the intestinal microflora and its changes under the influence of various feed additives. As candidate genes for expression analysis in real-time under different feeding regime were chosen genes influencing immunity and productivity of poultry largely associated with egg productivity. To study the expression profiles in the tissues of the oviduct and intestine were selected genes that are positional candidates for performance traits of laying hens, such as egg weight, egg production, elastic deformation of the eggshell, eggshell thickness encoding the following proteins : apocalixis-32 (OCX32), vocalising-36 (OCX-36), ovocleidin-116 (OC-116), the receptor of very low density lipoproteins (VLDLR), vitellogenin (VTG), Riboflavin-binding protein (RBP), cellular retinolbinding proteins (CRBPs), avidin (AVD), ovalbumin, CaBP-D28k. To study the effects of probiotics and phytobiotic on the immune system of laying hens has been selected genes encoding defense peptides (HDPS), comprising a large group of natural broad-spectrum antibiotics and play an important role in the immune response in almost all forms of life.