Camelidae and Cervidae Omphalophlebitis Study Guide

Overview and Clinical Importance

Omphalophlebitis (commonly called "navel ill" or "joint ill") is an infection of the umbilical vein that represents a significant cause of neonatal morbidity and mortality in camelids (llamas, alpacas, vicunas, guanacos) and cervids (deer, elk, moose, caribou). This condition occurs when bacteria enter through the umbilical stump and ascend via the umbilical vein toward the liver, potentially causing septicemia, liver abscesses, and secondary infections of multiple organ systems including joints, meninges, and lungs.

In camelids, newborns are called crias, while young cervids are typically called fawns (deer) or calves (elk, moose). Both groups share similar umbilical anatomy and susceptibility to navel infections, making understanding of this condition essential for NAVLE preparation.

Umbilical Cord Anatomy

The umbilical cord serves as the vital lifeline between dam and fetus during gestation. Understanding the normal anatomy is essential for recognizing pathology. In camelids and ruminants (including cervids), the umbilical cord contains five structures: two umbilical veins (which merge before entering the liver), two umbilical arteries, and the urachus.