Culture of fertilized cattle eggs

Abstract

SUMMARY: Culture studies were conducted with eggs recovered from cattle following super-ovulation treatment. Transfer of eggs to pseudo-pregnant rabbits led to continued cleavage in 71 of 138 attempts. Culture of eggs in vitro met with limited success in 58 of 189 attempts. The maximum cleavage stage reached in the in vivo studies was 64 cells; in the in vitro work it was 24 cells.