Results 41 to 50 of about 7,563 (208)

Altered progesterone concentrations by hormonal manipulations before a fixed-time artificial insemination CO-Synch + CIDR program in suckled beef cows [PDF]

, 2014
We hypothesized that pregnancy outcomes may be improved by inducing luteal regression, ovulation, or both (i.e., altering progesterone status) before initiating a timed–artificial insemination (TAI) program in suckled beef cows.
Hill, Scott L., Jaeger, John R., Lamb, G. C., Mercadante, V. R. G., Olson, K. C., Perry, G. A., Stevenson, Jeffrey S.   +6 more
core   +1 more source

Regressão luteal e dinâmica folicular após luteólise natural ou induzida por cloprostenol em vacas da raça Gir Luteal regression and follicular dynamic after spontaneous or cloprostenol induced luteolysis in Gir cattle

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 1999
A regressão luteal e a dinâmica folicular foram avaliadas durante o período de regressão luteal natural (n=14) ou após a indução artificial da luteólise pela aplicação de 500 g de cloprostenol (n=13), utilizando-se um aparelho portátil de ultra-som. Após
J.H.M. Viana, A.M. Ferreira, W.F. Sá, L.S.A. Camargo   +3 more
doaj   +1 more source

Modification of the standard 7-day Ovsynch protocol to increase the luteolytic and synchronization risks in dairy cows

Macedonian Veterinary Review, 2020
We hypothesized that a single dose of PGF2α belatedly injected on day 8 after GnRH-1 in cows receiving a 7-day Ovsynch-56 protocol (GnRH – 7 days – PGF2α – 56h – GnRH – 16h – timed AI) will increase the proportion of cows with complete luteolysis. At day
Branko Atanasov, Nikola Adamov, Irena Celeska, Ksenija Ilievska, Branko Angjelovski, Zvonko Trbogazov, Filip Davkov, Toni Dovenski, Geert Opsomer, Jeffrey Stevenson   +9 more
doaj   +1 more source

Transcriptome analysis reveals differences in mechanisms regulating cessation of luteal function in pregnant and non-pregnant dogs

BMC Genomics, 2017
Background In the domestic dog, corpora lutea (CL) are the only source of progesterone (P4), both in pregnant and non-pregnant cycles because there is no placental steroidogenesis.
Sophie Zatta, Hubert Rehrauer, Aykut Gram, Alois Boos, Mariusz Pawel Kowalewski   +4 more
doaj   +1 more source

Response to Therapeutic Abortion in Lactating Dairy Cows Carrying Dead Twins during the Late Embryo/Early Fetal Period

Animals, 2021
This study examined the dose–response effect of prostaglandin F2α (PGF2α) when used to induce abortion in cows with two dead twins at pregnancy diagnosis 28–34 days post-AI (late embryonic period: LE) or at pregnancy confirmation 49–55 days post-AI ...
Fernando López-Gatius
doaj   +1 more source

The effects of intrauterine infusion of peanut oil on endometrial health, salivary cortisol and interovulatory period in mares [PDF]

, 2017
Intrauterine infusion of peanut oil at Day 10 post-ovulation has been reported to prolong dioestrus in mares. However, the effects of peanut oil treatment on the endometrium and whether the technique is painful have not been assessed.
Argo, Aurich, British Horseracing Authority, Bucca, Carrın, Cheng, Cuckson, Diel de Amorim, Elhay, Entree, Freeman, Gee, Gee, Ginther, Hedberg, Kamm, Katila, Khosla, Lefranc, Love, McConaghy, McCue, McCue, McKinnon, Nie, Ousey, Palm, Pryor, Racing NSW, Rojer, Schulman, Schönbom, Slusher, Stabenfeldt, Storer, Stout, Turner, Vanderwall, Wathes, Wilsher, Wilsher   +40 more
core   +1 more source

Follicular dynamics in Serrana goats [PDF]

, 2006
Twenty-two Serrana goats were studied through two successive estrous cycles in order to characterize their follicular dynamics during the breeding season. The ovaries of the goats were scanned daily by realtime ultrasonography and all follicles ≥3mm were
Almeida, José Carlos, Azevedo, Jorge Manuel Teixeira de, Baril, Gérard, Fontes, Paulo J., Mascarenhas, Ramiro, Simões, João, Valentim, Ramiro   +6 more
core   +1 more source

Reproductive and Perinatal Outcomes of Embryo Transfer in Elite Hanwoo Cows

Veterinary Medicine and Science, Volume 12, Issue 2, March 2026.
Reproductive outcomes following embryo transfer in Elite Hanwoo cows differed by embryo production method. OPU‐IVF was associated with higher abortion, increased birth weight of male calves and greater dystocia risk, whereas MOET resulted in more favourable calving outcomes, highlighting the importance of embryo production strategy and periparturient ...
Mi‐Ryung Park, Se Young Lee, Sang‐Rae Cho, Seungmin Ha, Yeoung‐Gyu Ko   +4 more
wiley   +1 more source

Treg cells retain stable lineage commitment during pregnancy in mice after late gestation inflammatory challenge

Immunology &Cell Biology, Volume 104, Issue 3, Page 276-311, March 2026.
In this study, we used Foxp3‐fatemapping mice to examine the cell lineage stability of Treg cells in pregnancy. Ex‐Foxp3 cells were identified in gestational tissues. However, Treg cells retained lineage stability with no increased ex‐Foxp3 generation, regardless of inflammatory challenges that induce preterm birth.
Kerrie L Foyle, Ella S Green, Jessie R Walker‐Rogers, Ha M Tran, David M Olson, Lachlan M Moldenhauer, Sarah A Robertson   +6 more
wiley   +1 more source

Comparison of synchronisation and fertility after different modifications of the ovsynch protocol in cyclic dairy cows [PDF]

, 2013
The objectives of this study were to evaluate the effects of (1) double doses of PGF2α administration or (2) an exogenous progesterone (CIDR) applied concurrently with, or (3) the day after, first GnRH of Ovsynch (GnRH-1), on synchronisation and ...
Gumen, Ahmet, Karakaya, Ebru, Keskin, Abdulkadir, Koc, Volkan, Okut, Hayrettin, Yilmazbas-Mecitoglu, Gulnaz   +5 more
core   +1 more source