Control of the estrous cycle to improve fertility for fixed-time artificial insemination in beef cattle: a review

GC Lamb, CR Dahlen, JE Larson… - Journal of Animal …, 2010 - academic.oup.com
Early estrus-synchronization protocols focused on regressing the corpus luteum (CL) with an
injection of PGF2α followed by detection of estrus or involved the use of exogenous …

A review of methods to synchronize estrus in replacement beef heifers and postpartum cows

DJ Patterson, FN Kojima, MF Smith - Journal of Animal Science, 2003 - academic.oup.com
This review considers methods currently available to control estrous cycles of postpartum
beef cows and replacement beef heifers. Development of methods to control the estrous …

Effect of preovulatory concentrations of estradiol and initiation of standing estrus on uterine pH in beef cows

GA Perry, BL Perry - Domestic Animal Endocrinology, 2008 - Elsevier
Previous studies have indicated that initiation of standing estrus within 24h of fixed-time AI
influenced pregnancy rates. Furthermore, uterine environment at time of insemination can …

Protein expression pattern of PAWP in bull spermatozoa is associated with sperm quality and fertility following artificial insemination

CE Kennedy, KB Krieger, M Sutovsky… - Molecular …, 2014 - Wiley Online Library
Post‐acrosomal WW‐domain binding protein (PAWP) is a signaling molecule located in the
post‐acrosomal sheath (PAS) of mammalian spermatozoa. We hypothesized that the proper …

Ability of intravaginal progesterone inserts and melengestrol acetate to induce estrous cycles in postpartum beef cows

GA Perry, MF Smith, TW Geary - Journal of Animal Science, 2004 - academic.oup.com
Postpartum anestrous interval in beef cows is a major factor contributing to reproductive
failure during a defined breeding season. Our objectives were to determine the ability of a …

Comparison of progestin-based estrus synchronization protocols before fixed-time artificial insemination on pregnancy rate in beef heifers

DC Busch, DJ Wilson, DJ Schafer… - Journal of animal …, 2007 - academic.oup.com
The objective of the experiment was to compare pregnancy rates resulting from fixed-time AI
after administration of either 1 of 2 controlled internal drug release (CIDR)-based protocols …

Recent developments in the diagnosis and therapy of repeat breeding cows and buffaloes.

GN Purohit - CABI Reviews, 2008 - cabidigitallibrary.org
Repeat breeding (RB) continues to be a big problem for breeders and veterinary clinicians.
A brief mention is made of the common aetiological and risk factors for RB in cattle and …

Comparison of long-term CIDR-based protocols to synchronize estrus in beef heifers

NR Leitman, DC Busch, DA Mallory, DJ Wilson… - Animal Reproduction …, 2009 - Elsevier
Two experiments evaluated long-term controlled internal drug release (CIDR) insert-based
protocols to synchronize estrus and compare differences in their potential ability to facilitate …

Comparison of short-term progestin-based protocols to synchronize estrus and ovulation in postpartum beef cows

DJ Wilson, DA Mallory, DC Busch… - Journal of animal …, 2010 - academic.oup.com
Two experiments evaluated short-term controlled internal drug release (CIDR) insert-based
protocols to synchronize estrus and ovulation and compare differences in their potential to …

Comparison of progestin-based protocols to synchronize estrus and ovulation before fixed-time artificial insemination in postpartum beef cows

DJ Schafer, JF Bader, JP Meyer… - Journal of animal …, 2007 - academic.oup.com
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 …