Results 81 to 90 of about 11,326 (218)

Assessing the Value of Coordinated Sire Genetics in a Synchronized AI Program [PDF]

Synchronized artificial insemination was used to inseminate cows using different types of sire genetics, including low-accuracy, calving-ease, and high-accuracy. These three calf sire groups were compared to calves born to cows bred using natural service.
Haden, Kent, John, Mike, Kerley, Monty S., Parcell, Joseph L., Patterson, David J., Schaefer, Daniel   +5 more
core   +1 more source

Effects Of Timing Prostaglandin F2α Injection Following Controlled Internal Drug Release Insert Removal On Oestrus Response, Follicular Dynamics And Pregnancy Rate In Nelore Cattle [PDF]

, 2008
This research was conducted to evaluate the effect of oestrus synchronization protocol on oestrus response, follicular dynamics, pregnancy rate, and cortisol and progesterone concentrations in Nelore cattle under two types of handlings.
Attia Hussein, Mohamed Ali
core  

Expressions of Kisspeptin System and Ki‐67 in the Reproductive Tissues of Cyclic Bitches

Reproduction in Domestic Animals, Volume 61, Issue 4, April 2026.
ABSTRACT Kisspeptin is a peptide that plays a pivotal role in the central regulation of gonadotropins. It is regarded as a key regulator of reproductive processes, including follicular and luteal development and endometrial remodelling. The objective of this study was to investigate the expression of KISS1, its receptor KISS1R and the proliferation ...
Özgecan Korkmaz Ağaoğlu, Ali Reha Ağaoğlu, Özlem Özmen, Gökhan Bozkurt, Şerife Taşan   +4 more
wiley   +1 more source

Assessing Long‐Term Changes in Endometrial Morphology and Functionality in Dairy Cows With Metritis

Reproduction in Domestic Animals, Volume 61, Issue 4, April 2026.
ABSTRACT This study evaluated the long‐term impact of metritis on endometrial morphology and functionality in dairy cows. Postpartum Holstein cows (n = 107) were enrolled in a cohort study at the University of Idaho Dairy Center. Metritis was diagnosed using a Metricheck device within 12 days in milk (DIM) based on the presence of fetid, watery ...
M. H. Rashid, A. Martelo Pereira, F. N. S. Pereira, M. C. Oliveira Costa, E. F. Santos, L. Christensen, J. A. Sexton, M. Ciccarelli, L. B. Williams, M. Binelli, M. S. Waqas, E. B. de Oliveira, C. C. Figueiredo   +12 more
wiley   +1 more source

Including Natural and Synthetic PGF2α in a 11-day FGA-Based Estrus Synchronization Protocol in Sheep: an Efficacy Comparison of Dinoprost and Cloprostenol

Scientific Papers Animal Science and Biotechnologies, 2023
There are a variety of hormonal protocols and products on the market, but it is still unclear how they will work on specific field conditions. The efficacy of using different forms of prostaglandin F2α analogues such as dinoprost and cloprostenol in a ...
Alexandru Marius Deac, Marius Gavril Aipatioaie, Adriana Sebastiana Musca, Stefania Dana Mesesan, Ileana Miclea, Ioan Ladosi, Marius Zahan   +6 more
doaj  

EFFECT OF COMBINATION OF GnRH AND PGF2α FOR ESTRUS SYNCHRONIZATION ON ONSET OF ESTRUS AND PREGNANCY RATE IN DIFFERENT POSTPARTUM IN SWAMP BUFFALO IN KAMPAR REGENCY [PDF]

, 2011
The purposes of this study were to investigate the effect of administration of GnRH and PGF2α on onset of estrus and conception rate in different postpartum swamp buffalo (Bubalus bubalis).
B.P. Zesfin, C. Arman, Jaswandi, Yendraliza, Z. Udin   +4 more
core  

Sex‐dependent effects of environmental enrichment on mood‐related behaviors, central and peripheral BDNF, and adrenal catecholamine enzymes in mice

Physiological Reports, Volume 14, Issue 7, April 2026.
Abstract Housing conditions, particularly environmental enrichment (EE), can influence experimental outcomes and welfare. While EE is generally regarded as beneficial, a male bias exists in research supporting this. This study investigated whether sex differences exist in levels of BDNF in the brain and peripheral tissues in environmentally enriched ...
M. F. Herselman, S. Y. Luo, L. Y. Lin, X. F. Zhou, L. Bobrovskaya   +4 more
wiley   +1 more source

Influence of short- and long-term administration of Melengestrol acetate on estrus activity and reproductive performance of nulliparous Barki ewes [PDF]

, 2018
In Egypt, research focusing on estrous synchronization in small ruminants based on Melengestrol acetate (MGA) supplementation, particularly in nulliparous ewes, is still lacking.
A, S. H. (Shedeed), B, F. (Farrag), F, E. M. (El-Bassiony), H, E. M. (El-Rayes), S, A. E. (Abd), S, E. A. (El-Hawy)   +5 more
core  

Oestrus synchronisation in postpartum dairy cows using repetitive prostaglandin doses: Comparison between D-cloprostenol and dinoprost [PDF]

, 2014
This trial evaluated the reproductive performance in an early routine oestrus induction programme using two different PGF2α preparations in dairy cattle.
Molina, Laura, Pérez-Marín, Carlos, Quintela, Luis, Sánchez, Jose, Vizuete, Guillermo   +4 more
core   +1 more source

Estrus Synchronization in Cattle Following Feeding Six Progestogens

Journal of Dairy Science, 1968
Abstract The oral effectiveness of six progestogens in synchronizing estrus was determined in dairy heifers. The hormones were fed in a concentrate ration twice daily for 17 or 18 days. Four progestogens effectively synchronized estrous cycles at the levels studied. Progestogen 1 (6 α -methyl-4-pregnen-17-Ol-one acetate) synchronized estrus at minimum
A C, Menge, J J, Christian
openaire   +2 more sources