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Abstract

Treatments designed to synchronize luteolysis, preovulatory follicular development, and ovulation, and resynchronize oestrus after a first AI have improved responses to synchronization treatments. Protocols based only on the use of PGF result in variable onset of oestrus. Concentrations of...

Author(s)
Cavalieri, J.; Hepworth, G.; Fitzpatrick, L. A.; Shephard, R. W.; Macmillan, K. L.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2006, 65, 1, pp 45-64
Abstract

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...

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