Porcine Iron-Deficiency Anemia Study Guide

Overview and Clinical Importance

Iron-deficiency anemia (IDA) is the most common and clinically significant nutritional deficiency in neonatal piglets. This condition represents a major cause of morbidity and mortality in modern swine production and is a high-yield topic for the NAVLE examination.

Piglets are uniquely susceptible to IDA because they are born with limited iron reserves (approximately 50 mg), experience rapid growth that doubles their birth weight within one week, and receive milk that is inherently deficient in iron (only 1-2 mg iron/liter). Without supplementation, piglets will develop clinical anemia within 2-3 weeks of birth.

Etiology and Risk Factors

Primary Causes of Iron Deficiency

Low Birth Iron Stores: Piglets are born with approximately 50 mg of total body iron, which is rapidly depleted due to the high iron demands of rapid postnatal growth. Up to 40% of piglets are farrowed with suboptimal iron levels.