REport9, #3 - These Hormones include Prostaglandin F2a in...

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Theresa Gorecki ANS 069 3-18-08 Question # 3 Since Cattle have such a short time that they are in estrus in comparison to horses, it makes a lot of sense to make sure that breeding stock’s ovulations are synchronized. In using synchronization techniques, Occurrence of estrus becomes more predictable, time is better spent, and multiple animals in estrus at the same time will increase frequency and duration of estrus. Synchronization can be controlled by using hormones so that humans are able to manage cows.
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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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