Patent ductus arteriosus in a 9-day-old Grant's zebra

A 9-day old Grant's zebra with a 3-day history of lethargy, weight loss, inappetance, and diarrhea was treated with ampicillin, vitamin E and selenium, and tetanus antitoxin without effect in 24 h. On transfer to the local veterinary clinic, a grade IV/VI continuous heart murmur was detected and a patent ductus arteriosus found at necropsy.