1. 1. Agafonychev V. P., Makhonina V. N. Chicken eggs are valuable components of combined meat and egg products. Pishhevaja industrija (Food industry). 2018; 3: 23‑25. (in Russian)
2. 2. Epimakhova E. E., Trubina I. A. Nutritional and biological value of eggs and egg products. - Stavropol: AGRUS, 2015. (in Russian)
3. 3. Gushchin V. V., Riza-Zadeh N. I., Rusanova G. E. Food safety is one of the main problems of the modern world poultry industry (based on foreign literature, 2008‑2009). New in the technique and technology of poultry and egg processing: a collection of scientific papers of the Institute of Poultry Processing Industry. Rzhavki, 2009: 121‑141. (in Russian)
4. 4. Gushchin V. V., Rusanova G. E., Riza-Zade N. I. Food safety is one of the main concerns of the poultry industry. Ptitsa i ptitseprodukty (Poultry and poultry products). 2012; 1: 53‑56. (in Russian)
5. 5. De Buck J., Pasmans F., Van Immerseel F., Haesebrouck F., Ducatelle R. Tubular glands of the isthmus are the predominant colonization site of Salmonella enteritidis in the upper oviduct of laying hens. Poultry Science. 2004; 83 (3): 352‑358. doi: 10.1093 / ps / 83.3.352