Cranial and caudal mesenteric arteries in fowls (Gallus gallus) of the Cobb 500 lineage

Abstract

Theorigins, ramifications and distributions of the cranial and caudal mesenteric arteries were studied in 30 male fowls (Gallus gallus) from Cobb 500lineage, between 5 and 6 weeks old. The arterial vases of the specimens were filled with colored water-based solutionof Neoprene Latex "450" at 50% concentration afterwards they were fixed in a water-based solution of formaldehyde at 10% concentration. Thecranial mesenteric artery emerged from the right lateral surface of the descending aorta caudally the coeliac artery and through the ileocecal, jejunal and ileal arteries distributing itself by the jejunum, ileum, cecum and rectum to end next to the vitelline diverticulum. The caudal mesenteric artery originated from the ventral surface of the descending aorta and soon divided into cranial and caudal branches, distributed by the rectum, cloaca and cloacal bursa. There were anastomoses among branches of the cranial mesenteric artery and also among branches of the cranial mesenteric artery and branches of the caudal mesenteric and coeliac arteries.