Hormonal use to collect semen from stallions

You are to research assigned topic(Hormonal use to collect semen from stallions physically incapable of breeding mares) and write an abstract of two or so pages(enough to fully cover the topic) summarizing your findings. At least one of the sources has to be a recognized professional journal and other info can come from a recognized current textbook or the internet. Any information documented in the abstract needs to be verified by a copy of the article(journal, internet, or whatever) being attached to your abstract and the referenced statements highlighted on the copy of the article. Make sure to cover the most recent info.