Recognizing and Preventing Failure of Passive Transfer in Horses
RECOGNIZING AND PREVENTING Failure of Passive Transfer 4 to 6 WEEKS before foaling What is Failure of Passive Vaccinate the broodmare. This ensures she will develop antibodies to deliver via Transfer? colostrum (the placenta prevents transfer of maternal antibodies). Foals are born without any immune protection against infectious disease organisms. antibodies All foals require "passive placenta transfer" of infection- fighting proteins called antibodies that are found in the mare's first milk, called colostrum. If a foal does not obtain enough quality colostrum, he will not be protected from A FEW DAYS before foaling viruses and bacteria. This is referred to as failure of Mare's mammary gland produces colostrum. passive transfer (FPT). AT BIRTH Verify that the foal: STANDS NURSES 6-12 HOURS after birth antibodies pass from mare to foal 人 ad 85% of antibodies are absorbed in the first 6-8 hours. This is the period for maximal colostrum absorption. The foal 1-3 LITERS must consume at least: 12 HOURS after birth 24 HOURS after birth The foal's small Colostrum absorption begins to decline. intestine can no longer absorb antibodies 12-24 HOURS after birth Measure foal's antibody content: <200 mg/dL of plasma antibodies = total FPT %3D 200-800 mg/dL = partial FPT %3D >800 mg/dL = successful passive transfer %3D 5-20% OF FOALS FAIL TO ACHIEVE PASSIVE TRANSFER. Foals with FPT early lactation require antibodies via fresh or frozen colostrum (12-24 hours after birth), commercial products, or intravenous plasma (after 24 hours). placental infections CAUSES poor-quality colostrum of FPT: unable to stand and suckle premature birth fescue toxicosis Remember: Not all foals with FPT develop life-threatening infections, and not all foals achieving passive transfer of immunity are guaranteed to be healthy. Work with veterinarian to prepare for foaling and ensure your newborn receives quality colostrum. your SPONSORED BY: the HORSE PLASVACC FOR LIFE ® > 人 A
Recognizing and Preventing Failure of Passive Transfer in Horses
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