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An oestrus synchronization protocol was developed for use in lactating dairy cows using PGF, GnRH, and estradiol cypionate (ECP). In experiment I, lactating dairy cows received two injections of PGF (on days 0 and 11) (PP; n=10) or two injections of PGF (days 0 and 11) and 100 µg of GnRH on...

Borman, J. M.; Radcliff, R. P.; McCormack, B. L.; Kojima, F. N.; Patterson, D. J.; Macmillan, K. L.; Lucy, M. C.
Elsevier Science B.V., Amsterdam, Netherlands
Animal Reproduction Science, 2003, 76, 3/4, pp 163-176