Hardware disease (traumatic reticuloperitonitis): incidence, etiology/cause, predisposing factors and pathogenesis

Question 1

Motoric disorders

Answer 1

1. Traumatic reticuloperitonitis
2. Hoflund syndrome (vagal indigestion)
3. Obturation of the forestomach openings
4. Prolapse of the reticulum into the thorax
5. Sand accumulation within the rumen, abomasum and small intestine
6. Obturation of the omasum

Question 2

Traumatic reticuloperitonitis

Incidence rate of traumatic retoculoperitonitis (TRP)

Answer 2

• 80%(Maddy, 1954)
• 12.1% (Poulsen, 1976)
• 10% (Cramerset al., 2005)
• 8% (Waldner et al., 2009)
• 2 to 3% (Starke andRehage, 2000)

Question 3

Traumatic reticuloperitonitis

Aetiology, cause

Answer 3

• Sharp foreign metallic objects
• Screw
• Nails
• Pieces of wire
• Components of mixer wagons o arms from eye glasses
• Wire bristles from brushes etc.
• Rare
• Aluminium foreign bodies
• Abomasum, duodenum and jejunum
• Common: 99% of foreign bodies injure the reticulum

Question 4

Traumatic reticuloperitonitis

Predisposing factors

Answer 4

• Eating without selection
o Do not discriminate against metal materials in feed
o Do not completely masticate feed before swallowing
• Papillae on the tongue and buccal cavity
o Internal surface with papillae: function to guide the food in the buccal
cavity so the metal part can’t be separated from the feed!

Question 5

Traumatic reticuloperitonitis

Pathogenesis

Answer 5

• 2 options:

o Fall directly into the reticulum or

o Pass into the rumen over the ruminoreticular fold into the cranioventral part of the reticulum