Background and history

This term defines failure of udder development and is relatively uncommon.

Clinical signs

An underdeveloped udder.

Diagnosis

Following clinical signs.

Causes

• It can occasionally be seen in gilts because the hormones that are responsible for the development of the udder have not been produced in sufficient quantity.
• Occasionally herd problems are seen where poor nutrition, heavy worm burdens, chronic disease or mycotoxins may be implicated.
• The most likely mycotoxin to cause it is from ERGOT poisoning in pregnant gilts running in grass paddocks.
• Shortage of water is a common cause.
• Rarely, hypoplasia may be due to a genetic mutation in the affected gilts ancestors.

Prevention

• Ensure a good supply of water.
• Do not breed from affected sows.

Treatment

Affected animals should be culled.