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Abstract

An experiment was designed to compare fertility of SexedULTRA 4 MTM sex-sorted semen and conventional, non-sex-sorted semen following either fixed-time artificial insemination (FTAI) or split-time artificial insemination (STAI) of mature suckled beef cows. Units of sex-sorted and conventional semen ...

Author(s)
Thomas, J. M.; Locke, J. W. C.; Bonacker, R. C.; Knickmeyer, E. R.; Wilson, D. J.; Vishwanath, R.; Arnett, A. M.; Smith, M. F.; Patterson, D. J.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2019, 123, pp 100-107
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