[HTML][HTML] A review of current timed-AI (TAI) programs for beef and dairy cattle
MG Colazo, RJ Mapletoft - The Canadian Veterinary Journal, 2014 - ncbi.nlm.nih.gov
This is a review of the physiology and endocrinology of the estrous cycle and how ovarian
physiology can be manipulated and controlled for timed artificial insemination (TAI) in beef …
physiology can be manipulated and controlled for timed artificial insemination (TAI) in beef …
[HTML][HTML] Treatment of cycling and noncycling lactating dairy cows with progesterone during Ovsynch
JS Stevenson, JR Pursley, HA Garverick… - Journal of dairy …, 2006 - Elsevier
Our objective was to determine whether progesterone (P4) supplementation during an
Ovsynch protocol would enhance fertility in lactating dairy cows. Lactating dairy cows (n …
Ovsynch protocol would enhance fertility in lactating dairy cows. Lactating dairy cows (n …
[HTML][HTML] Concentration of anti-Müllerian hormone in dairy heifers is positively associated with productive herd life
F Jimenez-Krassel, DM Scheetz, LM Neuder… - Journal of Dairy …, 2015 - Elsevier
Reliable biomarkers predictive of productive herd life (time in herd after birth of first calf)
have heretofore not been discovered in dairy cattle. However, circulating concentrations of …
have heretofore not been discovered in dairy cattle. However, circulating concentrations of …
[HTML][HTML] Detection of anovulation by heatmount detectors and transrectal ultrasonography before treatment with progesterone in a timed insemination protocol
JS Stevenson, DE Tenhouse, RL Krisher… - Journal of Dairy …, 2008 - Elsevier
Our objective was to determine the accuracy of identifying noncycling lactating dairy cows
before the application of a timed artificial insemination (AI) protocol [with or without …
before the application of a timed artificial insemination (AI) protocol [with or without …
Progesterone supplementation before timed AI increased ovulation synchrony and pregnancy per AI, and supplementation after timed AI reduced pregnancy losses in …
MG Colazo, A Dourey, R Rajamahendran, DJ Ambrose - Theriogenology, 2013 - Elsevier
One of the causes of poor fertility in high producing dairy cows is inadequate progesterone.
Therefore, we determined the efficacy of an intravaginal insert containing 1.55 g of …
Therefore, we determined the efficacy of an intravaginal insert containing 1.55 g of …
Double-Ovsynch, compared with presynch with or without GnRH, improves fertility in heat-stressed lactating dairy cows
E Dirandeh, AR Roodbari, MG Colazo - Theriogenology, 2015 - Elsevier
The objective was to compare 3 timed artificial insemination (TAI) protocols in lactating dairy
cows during heat stress. Multiparous Holstein cows yielding (mean±SEM) 29.4±0.3 kg of …
cows during heat stress. Multiparous Holstein cows yielding (mean±SEM) 29.4±0.3 kg of …
[HTML][HTML] Use of estradiol cypionate as a substitute for GnRH in protocols for synchronizing ovulation in dairy cattle
JS Stevenson, SM Tiffany, MC Lucy - Journal of dairy science, 2004 - Elsevier
Our purpose was to determine whether estradiol cypionate (ECP) could be substituted for
the second GnRH injection of the standard Ovsynch protocol (injection of GnRH given 7 d …
the second GnRH injection of the standard Ovsynch protocol (injection of GnRH given 7 d …
The effect of addition of equine chorionic gonadotropin to a progesterone-based estrous synchronization protocol in buffaloes (Bubalus bubalis) under tropical …
K Murugavel, D Antoine, MS Raju, F López-Gatius - Theriogenology, 2009 - Elsevier
Poor estrus expression and anestrus decrease the reproductive efficiency of buffaloes. The
objective of this study was to determine whether the addition of equine chorionic …
objective of this study was to determine whether the addition of equine chorionic …
[HTML][HTML] Resynchronizing estrus with progesterone or progesterone plus estrogen in cows of unknown pregnancy status
SZ El-Zarkouny, JS Stevenson - Journal of dairy science, 2004 - Elsevier
Two experiments were conducted to test 2 progesterone (P4)-based treatments that were
applied to lactating dairy cattle of unknown pregnancy status to resynchronize estrus of …
applied to lactating dairy cattle of unknown pregnancy status to resynchronize estrus of …
[HTML][HTML] Inseminations at estrus induced by presynchronization before application of synchronized estrus and ovulation
JS Stevenson, AP Phatak - Journal of dairy science, 2005 - Elsevier
A controlled field study examined conception rates after 2 timed artificial insemination (TAI)
breeding protocols conducted on 2 commercial dairy farms. Estrous cycles in postpartum …
breeding protocols conducted on 2 commercial dairy farms. Estrous cycles in postpartum …