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Animal Science Database

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Abstract

Two progestin-based protocols for oestrus synchronization in postpartum beef cows were compared following treatment administration on the basis of oestrous response, interval to and synchrony of oestrus, and pregnancy. Cows were assigned to one of the two treatment protocols by age, body condition...

Author(s)
Stegner, J. E.; Kojima, F. N.; Ellersieck, M. R.; Lucy, M. C.; Smith, M. F.; Patterson, D. J.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2004, 82, 4, pp 1016-1021
Abstract

This experiment compared 2 long-term controlled internal drug release (CIDR)-based protocols to synchronize estrus before fixed-time artificial insemination (FTAI) in postpartum beef cows. Cows were assigned to treatments by age, BCS, and days postpartum. Cows assigned to the 14- to 19-d CIDR-PGF ...

Author(s)
Martin, N. T.; Thomas, J. M.; Nash, J. M.; Mallory, D. A.; Ellersieck, M. R.; Poock, S. E.; Smith, M. F.; Patterson, D. J.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2014, 92, 4, pp 1759-1767
Abstract

Two experiments were conducted to examine the necessity of adding a GnRH injection to a 14-d controlled internal drug release (CIDR)-based protocol for synchronization of estrus and ovulation in postpartum beef cows. The experiments were designed to characterize long-term CIDR-based protocols in...

Author(s)
Nash, J. M.; Mallory, D. A.; Ellersieck, M. R.; Poock, S. E.; Smith, M. F.; Patterson, D. J.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2013, 91, 7, pp 3168-3176
Abstract

This experiment was conducted to compare pregnancy rates in postpartum beef cows resulting from fixed-time AI (FTAI) after treatment with controlled internal drug release (CIDR)-based protocols to synchronize estrus. Cows assigned to the Show-Me-Synch (n=167) protocol received a CIDR from d 0 to...

Author(s)
Nash, J. M.; Mallory, D. A.; Ellersieck, M. R.; Poock, S. E.; Smith, M. F.; Patterson, D. J.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Animal Reproduction Science, 2012, 132, 1/2, pp 11-16
Abstract

This experiment was designed to compare pregnancy rates in postpartum beef cows resulting from fixed-time AI (FTAI) after treatment with 1 of 2 protocols to synchronize estrus and ovulation. Cross-bred, suckled beef cows (n=650) at 4 locations (n=210; n=158; n=88; and n=194) were assigned within a...

Author(s)
Schafer, D. J.; Bader, J. F.; Meyer, J. P.; Haden, J. K.; Ellersieck, M. R.; Lucy, M. C.; Smith, M. F.; Patterson, D. J.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2007, 85, 8, pp 1940-1945