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The objective of this experiment was to compare two progestins and three treatments for synchronizing follicular wave emergence and ovulation in protocols for fixed-time AI in beef heifers. On day 0 (beginning of the experiment), Angus and Angus-Simmental cross beef heifers at random stages of the...

Martinez, M. F.; Kastelic, J. P.; Adams, G. P.; Mapletoft, R. J.
American Society of Animal Science, Savoy, USA
Journal of Animal Science, 2002, 80, 7, pp 1746-1751