ARTERIAL BLOOD SUPPLY OF REPRODUCTIVE ORGANS IN WHITE CROSS HISEX CHICKEN

The aim of research is to study the features of the arterial system of the ovary and oviduct in the white cross Hisex chicken. The object of the study is the ovary and oviduct of a white cross Hisex chicken at the age of 165–185 days. To study the vessels that are involved in the vascularization of the ovary and oviduct, the method of conventional and thin preparation was used, pouring SKS-65 latex through the femoral artery, then fixing in a 3 % aqueous solution of formaldehyde was performed. Three types of arterial blood supply to the ovaries have been identified. In the first type, two arteries originated from the left cranial renal artery and penetrated into the ovarian stroma. In the second type, one artery branched from the descending aorta and two arteries from the left cranial renal artery. In the third type, two arteries branched from the descending aorta and one artery from the left cranial renal artery and entered the ovarian stroma. Arterial blood supply to the oviduct is carried out by the main arteries - dorsal and ventral oviduct, additional – cranial, middle and caudal protein, cranial and caudal uterine and small collateral – right and left craniolateral, caudoventral, cranioventral uterine. Vascularization of the uterus in chicken occurs due to the main (cranial and caudal uterine) and additional (craniolateral right and left, caudodorsal and cranioventral) collateral arteries. In 68.5 % of cases, it was found that the ovaries were supplied with blood by branches both from the descending aorta and from the left cranial renal artery, while in 31.5 % of cases – only from the left cranial renal artery. The presence of various connections in the form of intersystemic and intrasystemic anastomoses on the lateral surface of the oviduct, which represent a morphological path of roundabout blood circulation, was noted.