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We have previously shown that, while the intrinsic quality of the oocyte is the main factor affecting blastocyst yield during bovine embryo development in vitro, the main factor affecting the quality(More)
The aim of this study is to examine the effect of bovine oocyte maturation, fertilization or culture in vivo or in vitro on the proportion of oocytes reaching the blastocyst stage, and on blastocyst(More)
In vitro produced bovine zygotes show substantial variation in the time required to complete the first cell cycle and in their in vitro development potential. A number of reports have highlighted the(More)
BACKGROUND The significance of the high variation in numbers of follicles produced during reproductive cycles in humans and cattle is unknown. METHODS We selected beef heifers with high (> or =25)(More)