Estradiol production by preimplantation blastocysts and increased serum progesterone following estradiol treatment in llamas.

Estradiol is a potential candidate for the blastocyst signal responsible for maternal recognition of pregnancy in the llama (Lama glama). Two experiments were conducted to determine if the llama blastocyst produces estradiol during the presumed period of maternal recognition of pregnancy and if exogenous estradiol can extend the luteal phase. In Experiment… (More)