Effect of Altrenogest on Luteinizing Hormone Concentrations in Mares During the Transition Period

摘要

Altrenogest administration suppressed both baseline luteinizing hormone (LH) secretion and go-nadotropin-releasing hormone (GnRH)-induced LH secretion in transitional mares. There was no evidence that administration of altrenogest to transitional mares resulted in accumulation of LH in the pituitary, or that LH release is enhanced when altrenogest treatment is discontinued, as had been previously hypothesized.