PATHOLOGIC DIAGNOSTICS OF HENS’ NEPHROPATHY

Abstract

The publication pays attention to the hens suffering from diseases of kidneys and urinary tracts. Their special damage assumes they are silent and revealed in extensive-stage disease when kidneys are damaged seriously. Being the organs of urinary system kidneys perform important functions in the organism. They remove excess of water and saline and support blood osmotic pressure in body tissues; they remove endogeneous and exogeneous toxic agents and stuffs of nitrogeneous metabolism (uric acid which is 78 % of urine dry substance). But it is of great importance and necessity to investigate specifically the functional processes observed in hens suffering from lithic diathesis. Lithic diathesis (podagra) is a disease related to the metabolic disorder and characterized of concentration of uric acid in blood (hyperuricemia) with further calcination in tissues and organs. The publication is aimed at investigating pathologic changes in hens suffering from lithic diathesis respectively to the age. The research applied pathologic materials as kidneys, liver, thymus and bursa cloacalis of chickens, replacement chicks and laying hens aged 35–209 days, which were selected at the poultry farm of egg production. The authors applied such research methods as pathologic and anatomic, his-tologic and microscopic ones. The research resulted in finding out hard and irreversible abnormal changes in the poultry suffering from podagra. It certifies about micotoxicosis observed in chickens aged 35–60 days and about lithic diathesis and urolithiasis observed in older hens. The research carried out verify the importance of histological research as a main method of diagnostics of poultry podagra.