Many equine researchers believe this is caused by an inadequate preparation of the reproductive tract, prolonged gestation and fetal malpresentation. Freeman said the agalactia probably is caused by decreased production of the hormone prolactin. The recommended time for removal of mares approaching parturition from endophyte-infected fescue varies from veterinarian to veterinarian, or from equine specialist to equine specialist. Freeman said the few studies that have been conducted suggest rapid recovery of mares that are removed from endophyte-infected pastures. There are indications that problems can be avoided by removing mares as late as 30 days before foaling.
Fescue is the most persistent, best adapted, cool season perennial forage grown in eastern Oklahoma.
The plant also grows further west, but does not produce well on sites prone to drought or in deep sands. There is no known chemical or non-chemical treatments that will remove the endophyte Neotyphodium from infected fescue plants. Eradication of pre-existing fescue from pasture land is difficult, slow and costly. For more information on domperidone, veterinarians can write to Dr. Dee Cross, Animal Science, Dairy and Veterinary Sciences Department, P.O. Box 340361, Clemson University, Clemson, SC 29634-0361. We would like to take this opportunity to thank Oklahoma State University for allowing us to provide you with this information.