Physiological state of chickens cross dekalb white depending on the conditions of detention

Abstract

The functional state of the heart, liver and kidneys of Dekalb White cross chickens kept for 13 weeks under different light conditions was assessed. The study was carried out in the Department of Аnimal Husbandry and Poultry Federal State Budgetary Scientific Institution Far East Zone Research Veterinary Institute and Department of Physiology and Pathophysiology FSBEI HE Amur SMA MOH Russia, Blagoveshchensk, Amur region, Russia. In the conditions of the Belogorskaya poultry farm of the Amur region, chickens were kept in cell batteries from the age of 3 weeks at standard (6-10 lux) and brighter (40-50 lux) illumination. During the experiment, laboratory diagnostics of the blood of birds aged 4, 9, 12 and 16 weeks was carried out. 60 young laying hens aged 16 weeks were taken for anatomical examination, macro- and micromorphological examination of the heart, liver and kidneys was performed. It was revealed that at a low level of illumination (6-10 lux), the amount of hemoglobin in the blood of chickens decreased by 5,5-12,5% and erythrocytes by 4,2-15,5%, from 9 weeks of age, the amount of glucose decreased by 29,7% compared to the norm with an increase in the level of gamma globulins by 17,4-48,2%, bilirubin by 2,9 times, aspartate aminotransferase by 2,5 times, alanine aminotransferase by 2,2 times, creatinine by 63,7% higher than normal, at 16 weeks of age, an increase in absolute weight right ventricle of the heart by 4,5%, interventricular septum by 22,2%, epicardial fat by 11,0% and abdominal fat by 17,4%. In chickens with illumination of 40-50 lux, the established deviations were less significant, microscopy showed an increase in the area of the lumen of the arterial vessels by 27,1% in the myocardium and 5,7% in the hepatic lobules, a decrease in the area of the juxtamedullary glomeruli by 5,9%, the area of the lumen of the proximal and distal tubules of nephrons by 8,6-33,7%, indicating an improvement in the functional state of the heart, liver and kidneys.