Factors that optimize reproductive efficiency in dairy herds with an emphasis on timed artificial insemination programs

CE Cardoso Consentini, MC Wiltbank, R Sartori - Animals, 2021 - mdpi.com
Simple Summary Reproductive efficiency is critical for profitability of dairy operations. The
first part of this manuscript discusses the key physiology of dairy cows and how to practically …

[HTML][HTML] Level of circulating concentrations of progesterone during ovulatory follicle development affects timing of pregnancy loss in lactating dairy cows

JPN Martins, D Wang, N Mu, GF Rossi, AP Martini… - Journal of dairy …, 2018 - Elsevier
The objective of this experiment was to determine the effect of high versus low progesterone
(P4) during the pre-dominance or dominance phase (or both) of ovulatory follicle …

[HTML][HTML] The high-fertility cycle: How timely pregnancies in one lactation may lead to less body condition loss, fewer health issues, greater fertility, and reduced early …

EL Middleton, T Minela, JR Pursley - Journal of dairy science, 2019 - Elsevier
Body condition loss during early lactation varies among cows in the herd and is associated
with future health and reproductive outcomes. The objective of this study was to gain a …

Gonadotropin-Releasing Hormone (GnRH) and Its Agonists in Bovine Reproduction I: Structure, Biosynthesis, Physiological Effects, and Its Role in Estrous …

EM Hassanein, Z Szelényi, O Szenci - Animals, 2024 - mdpi.com
Simple Summary Gonadotropin-releasing hormone (GnRH), a critical regulator of pituitary
gonadotropin secretion, plays a fundamental role in controlling physiological aspects of …

[HTML][HTML] Presynchronization with prostaglandin F2α and gonadotropin-releasing hormone simultaneously improved first-service pregnancy per artificial insemination …

JPN Martins, TO Cunha, W Martinez, JS Schmitt - Journal of Dairy Science, 2023 - Elsevier
This study aimed to determine the effect of 2 simple breeding strategies combining artificial
insemination (AI) after detection of estrus (AIED) and timed AI (TAI) on first-service fertility in …

Presynchronization with simultaneous administration of GnRH and prostaglandin F (PGF) 7 days prior to Ovsynch improves reproductive profile in Hariana zebu …

G Saini, S Kumar, AK Pandey, H Singh… - Tropical Animal Health …, 2023 - Springer
This study is aimed at assessing the impact of simultaneous administration of GnRH and
prostaglandin F2α (PGF2α) 7 days prior to Ovsynch in Hariana cow. Two hundred cyclic …

Presynchronization with simultaneous administration of GnRH and PGF2α 7 days prior to Ovsynch improves reproductive profile in Hariana zebu cow

G Saini, S Kumar, AK Pandey, H Singh, M Virmani - 2022 - researchsquare.com
This study aimed to assess the impact of simultaneous administration of GnRH and PGF 2α
7 days prior to Ovsynch in Hariana cow. Two hundred cyclic cows (> 4 months postpartum) …

[PDF][PDF] Impact of three different ovulation synchronization protocols on first-service conception rates in postpartum cows

AI Alsuwaidawi, HM Alrawi - Iraqi Journal of Veterinary Sciences, 2024 - iasj.net
The study was conducted on 60 Holstein dairy cows during 50 and 60 days postpartum in
different rural areas in Al-Anbar Province, Iraq. This study evaluated the effects of two …

Effect of GnRH 7 Days Before Presynchronization With Simultaneous PGF and GnRH on Reproductive Outcomes in Holstein Dairy Cows

AM Hubner, PMG Peixoto, J Hillesheim… - Frontiers in Veterinary …, 2020 - frontiersin.org
We evaluated if an additional GnRH injection 7 days before pre-synchronization with
simultaneous PGF2α and GnRH (PG+ G) would improve responses to presynchronization …

[PDF][PDF] A review of attempts to improve cow fertility through reproductive management: Estrous synchronisation

MA Elmetwally, A Hussien, H Sharawy… - Journal of Veterinary …, 2021 - oapgroup.org
A Review of Attempts to Improve Cow Fertility Through Reproductive Management: Estrous
Synchronisation Page 1 Vol– 2 Issue 4 Pg. no.- 1 Citation: Mohammed A Elmetwally, Adel …