Developmental competence of in vivo and in vitro matured porcine oocytes after subzonal sperm injection

Abstract excerpt

In vivo and in vitro matured porcine oocytes were fertilized by subzonal sperm injection (SUZI), and their subsequent development in vitro was examined to determine whether ooplasmic incompetence is the major cause of limited developmental ability of in vitro matured/ fertilized porcine oocytes (Experiment 1). There was no significant difference in rates of fertilization (61% vs. 70%), monospermy (37% vs. 45%),...

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