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Unformatted text preview: These Hormones include Prostaglandin F2a in the form of Lutalyse or Esturmate and Gonadotropin Releasing Hormone in the form of Cytorelin, Factrel, or Ferigyl. When using PGF, injections must be given while the animal has a Corpus Luteum, since it will cause the CL to regress. Animals that do not repaond to one injection will respond 11 to 14 days after the first when a CL will be present. This means that it is general practice to use two injections to synchronize a group....
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- Spring '08