The features of venous outflow from the oviduct and kidneys in the Italian goose

The research objective was to study the features of venous outflow from the oviduct and kidneys in the Italian goose. As the objects of the research the carcasses of the Italian goose of (female) of 160-170 days of age served. To study the veins involved in the vascularization of the reproductive organs and kidneys, the method of pouring through the femoral vein with SKS-65 latex followed by fixation in a 4 % aqueous solution of formaldehyde was used. Macro- and micropreparation was carried out under the falling water drop with use of a binocular microscope of MBS-2 by means of the tools used in eye practice. It was noted that the veins of the oviduct were divided into main (dorsal and ventral oviducts), extraorgan (cranial, middle and caudal proteinaceous, cranial and caudal uterine) and intraorganic (cranioventral, caudoventral, caudolateral ventral, cranioventral). The outflow of venous blood into the kidneys was carried out through extraorganic (external and internal iliac, sciatic, pudendal and intraorganic (cranial and caudal portal renal, renal, cranial, middle and caudal renal) veins. Venous course begins with the inflows of intraorgan veins which, joining, form extraorgan veins and then, after the formation of the great venous vessels, they flow into the caudal portal renal left vein. The pathways of the roundabout blood circulation in the studied avian species, connecting the dorsal and ventral oviductal veins with cranial and caudal portal left renal veins, which is an important characteristic morphofunctional feature in birds for filtering blood through a double network of venous capillaries of the renal parenchyma while preserving mineral substances are of special interest.