Comparison of in vitro development of embryos collected from the same gilts at first and third estrus

In vitro development of embryos collected from the same gilts mated at first and third estrus was compared. Embryos from one to eight cells were collected from gilts 36 to 48 h after detection of estrus. Embryos were cultured for 8 d in Whitten's medium in a humidified atmosphere of 5% CO2 in a...

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