Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
It is absolutely critical to recognize and assess a sick foal early in the course of disease. There may be several predisposing conditions, before and after birth, that put a foal into the high risk category. Conditions such as purulent vaginal discharge, colic surgery, general anesthesia, endotoxemia, poor nutritional status and excessive colostral leakage prior to parturition are a few maternal conditions that may adversely affect an unborn foal. Adverse conditions of parturition and specific neonatal complications may also put a foal at high risk, including premature parturition, prolonged labor or induction of labor, dystocia, placental abnormalities, twinning, orphan, delay or lack of intake of sufficient quantities of colostrum, immaturity or prematurity and exposure to infectious diseases.
Kincade, Carolyn N. and Davis, Ila
"Considerations in Assessmemt and Care of the High Risk Neonatal Foal,"
Iowa State University Veterinarian: Vol. 54
, Article 12.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol54/iss2/12