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An experiment was designed to evaluate the effects of treatment with progestogen and estradiol-17β (E-17β), in combination, at different stages of development of the dominant follicle, on follicular development and subsequent wave emergence. Cross-bred beef cows (n = 12) and heifers (n = 25) were randomly allocated to one of four treatment groups on Day 0 (ovulation). Treatment groups were untreated...
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