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This study aimed to investigate the developmental competence of ovum pick-up collected oocytes on three stages of the follicular wave: Days 2, 5 and 8. A group of 11 cows was used in successive cycles to perform ovum pick-up on either Day 2, 5 or 8 of an induced follicular wave (three sessions per stage). Follicular waves were initiated by puncturing the dominant follicle and all other follicles sized...
The current knowledge is reviewed concerning correlations between follicular development in the cow and the competence of matured oocytes to develop into an embryo following IVF and IVC. At the follicular size of 3 mm, some oocytes become competent and the proportion of competent oocytes does not increase during development up to 7 mm. The proportion of competent oocytes increases greatly in follicles...
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