Synchronization and superovulation of mature cycling gilts for the collection of pronuclear stage embryos
2007
Abstract An efficient protocol was developed to synchronize and superovulate mature pigs for the collection of pronuclear stage embryos suitable for DNA microinjection. A timed and coordinated regimen of Lutalyse ® , PG600 ® and Chorulon ® along with daily checking for estrus allowed synchronization of groups of gilts having estrous cycles at regular intervals. Pigs 10–16 days after the beginning of standing estrus have been successfully synchronized into estrus using this protocol. A standard dose of each drug was used independent of size or age of the animal. One protocol averaged 38.9 ovulations and 31.1 one-cell embryos recovered per animal.
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