All white neonatal foal with recessive X gene, parents are all white, no feces in 2 days, what caused this?

• A. Meconium impaction
• B. Neonatal diarrhea due to infection
• C. Umbilical infection
• D. Dehydration

Answer: (A)

Failing to pass the first stool (meconium) in a newborn foal is a common and important clue. When a foal doesn’t produce feces within the first 24 to 48 hours, the most likely cause is meconium impaction—meconium becomes thick and sticky and can get stuck in the colon, blocking passage. Neonatal gut motility is often low, which makes this impaction more likely in the early hours after birth. The white coat color or an X-linked inheritance pattern doesn’t cause this problem; color is incidental to the mechanism.

You’ll typically see signs of abdominal discomfort and straining, and the foal may appear depressed or quiet. In contrast, infectious neonatal diarrhea would present with liquid stools and signs of illness, dehydration would show visible water loss signs, and an umbilical infection would present with local or systemic infection signs rather than a complete stool absence.

Treating promptly aims to soften and evacuate the impacted meconium, often with an appropriately managed enema and supportive care. Early intervention helps prevent complications like colic, intestinal rupture, or sepsis.