NAVLE Reproductive

Bovine Omphalophlebitis Study Guide

📅 March 28, 2026 ⏱ 25 min read

Overview and Clinical Importance

Omphalophlebitis is inflammation and infection of the umbilical vein in neonatal calves. This condition represents one of the most common and economically significant diseases in bovine neonates, ranking as the third most common disease after neonatal diarrhea and bovine respiratory disease. The umbilical vein courses cranially from the umbilicus to the liver, making omphalophlebitis particularly dangerous due to the potential for ascending infection leading to hepatic abscessation and septicemia.

High-YieldOmphalophlebitis typically presents in calves 1-3 months of age with mild fever, lethargy, failure to thrive, and an enlarged umbilicus. Unlike omphalitis (external infection), omphalophlebitis involves the umbilical vein and can extend to the liver. The umbilical vein courses CRANIALLY toward the liver.

Structure	Fetal Function	Post-Natal Remnant
Umbilical Vein (1)	Carries oxygenated blood from placenta to fetus via liver	Becomes falciform ligament (round ligament of liver)
Umbilical Arteries (2)	Carry deoxygenated blood from fetus to placenta	Become round ligaments of bladder
Urachus (1)	Connects fetal bladder to allantoic cavity	Normally atrophies; incorporated into bladder apex

Umbilical Anatomy in Calves

The umbilical cord contains four essential structures that undergo significant changes after birth:

NAVLE TipRemember 'VEIN to LIVER, ARTERIES to BLADDER' - The umbilical VEIN courses CRANIALLY to the liver (becomes falciform ligament), while umbilical ARTERIES course CAUDALLY along the bladder (become round ligaments). This directional knowledge is essential for understanding infection spread patterns.

Organism	Gram Stain	Clinical Association
Escherichia coli	Gram-negative	Neonates, acute cases; most common
Trueperella pyogenes	Gram-positive	Chronic cases; abscess formation
Staphylococcus aureus	Gram-positive	Purulent infections

Etiology and Pathophysiology

Risk Factors

Environmental Factors:

Poor hygiene in calving environment (dirty pens, wet bedding)
Inadequate or improper navel disinfection
Navel sucking by other calves

Individual Calf Factors:

Failure of passive transfer (FPT) - serum total protein less than 5.2 g/dL
Male calves (higher incidence)
Birth weight greater than 50 kg
Dystocia or traumatic umbilical severance

Common Bacterial Pathogens

Condition	Structure Involved	Direction of Spread	Complication
Omphalitis	External stump	Local; may extend	Septicemia
Omphalophlebitis	Umbilical vein	CRANIALLY to liver	Hepatic abscess
Omphaloarteritis	Umbilical arteries	CAUDALLY to bladder	Cystitis (least common)
Urachitis	Urachus	CAUDALLY to bladder	Pollakiuria (most common)

Classification of Umbilical Disorders

High-YieldURACHITIS is the MOST COMMON umbilical infection in calves, while OMPHALOPHLEBITIS is most clinically significant due to hepatic involvement. Omphaloarteritis is LEAST common because arteries retract and close via smooth muscle contraction at birth.

Antibiotic	Dose	Route	Notes
Penicillin G	22,000 IU/kg	IM q12h	First-line; 5-7 days (2-3 weeks severe)
Ceftiofur	1-2 mg/kg	IV/IM q12h	Good Gram-negative coverage
Florfenicol	20 mg/kg	IM q48h	Effective against T. pyogenes

Clinical Signs and Presentation

Age of Presentation

Omphalophlebitis is typically detected in calves 1 to 3 months of age, later than localized omphalitis (2-5 days).

Local Signs

Umbilical enlargement: Firm, non-reducible swelling
Local hyperthermia: Umbilicus warm to touch
Purulent discharge: Yellow-green pus may drain
Palpable cord: Thickened umbilical vein traced cranially toward liver

Systemic Signs

Mild fever, failure to thrive, lethargy, decreased appetite
Arched back posture (indicative of abdominal pain)

Complications

Hepatic abscessation: Palpable mass craniodorsally; hyperechoic lesion on ultrasound
Septic arthritis: Joint swelling (fetlock, knee, hock); severe lameness
Meningitis: Hyperesthesia, rigidity, fever
Peritonitis: Abdominal distension, rapid deterioration

NAVLE TipWhen you see a calf with JOINT SWELLING and UMBILICAL ENLARGEMENT, suspect omphalophlebitis with septic arthritis. Always palpate the umbilicus in any calf presenting with joint effusion!

Procedure	Indication	Outcome
En Bloc Resection	Infection does NOT extend to liver	100% survival - preferred
Marsupialization	Infection extends to liver parenchyma	74% survival - creates drainage

Diagnosis

Physical Examination

Inspect umbilicus for diameter, discharge, moisture
Palpate for heat, pain, consistency; attempt reduction (non-reducible = infection)
Deep abdominal palpation: trace cranially (vein to liver) and caudally (arteries/urachus to bladder)
Be gentle - vigorous palpation can rupture abscess causing peritonitis

Ultrasonography

Ultrasonography is the GOLD STANDARD for evaluating umbilical disorders.

Findings in Omphalophlebitis:

Enlarged umbilical vein diameter
Thickened vessel walls
Hyperechoic material within lumen (pus)
Extension toward liver parenchyma

Clinical Scenario	Prognosis
Localized infection, surgical en bloc resection	EXCELLENT (100%)
Liver involvement with marsupialization	GOOD (74%)
Medical management alone	GUARDED (47%)
Associated septic arthritis	POOR
Septic peritonitis	HOPELESS (death 2-3 days)

Treatment

Surgery is the treatment of choice for most cases of omphalophlebitis. Medical management alone has limited efficacy (47% vs 87% survival).

Antibiotic Therapy

Surgical Options

NAVLE TipEN BLOC RESECTION = 100% survival when infection does NOT reach liver. MARSUPIALIZATION when infection extends to liver. Septic arthritis significantly WORSENS prognosis.

Prognosis

Prevention

Navel Care Protocol

Immediate dipping: Fully immerse umbilicus in 7% tincture of iodine within first 15 minutes
Repeat application: Dip again 2-4 hours later
Alternatives: 0.5% chlorhexidine or 50:50 ethanol/chlorhexidine

Colostrum Management

Target: 3 liters within first 2 hours (preferably) to 6 hours
Quality: Brix greater than 22%
Verify transfer: Serum TP greater than 5.5 g/dL at 24 hours

Practice NAVLE Questions

Test your knowledge with 10,000+ exam-style questions, detailed explanations, and timed exams.

Start Your Free Trial →