Results 71 to 80 of about 11,326 (218)

Bioclimatic, demographic and anthropogenic correlates of grizzly bear activity patterns in the Greater Yellowstone Ecosystem

Oikos, Volume 2026, Issue 4, April 2026.
Plasticity of diel activity rhythms may be a key element for adaptations of wildlife populations to changing environmental conditions. In the last decades, grizzly bears Ursus arctos in the Greater Yellowstone Ecosystem (GYE) have experienced notable environmental fluctuations, including changes in availability of food sources and severe droughts ...
Aurora Donatelli, Mark A. Haroldson, Justin G. Clapp, Paolo Ciucci, Frank T. van Manen   +4 more
wiley   +1 more source

Induction and Synchronization of Estrus in Gilts with P.G.600

Scientific Papers Animal Science and Biotechnologies, 2023
Recent developments in understanding the physiological mechanisms of reproduction control can be adapted to swine reproductive management. This article points out the procedures that can be used to induce estrus, in prepubescent and anestrus gilts, and ...
Ion Carabă, Nicolae Păcală, Ada Cean, Marioara Nicula, Liliana Ciochina-Petculescu, Silvia Erina, Cosmin Ganţă   +6 more
doaj  

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

First Vasectomy Procedure Successfully Performed on a Southern African Male Giraffe (Giraffa camelopardalis giraffa)

Zoo Biology, Volume 45, Issue 2, Page 195-202, March/April 2026.
First successful vasectomy in a southern African male giraffe, Giraffa camelopardis giraffa ABSTRACT This study reports the first successful vasectomy on a southern African male giraffe (Giraffa camelopardalis giraffa). The goal of the procedure was to create a teaser male for reproductive studies.
Francois Deacon, Willem Daffue, Edward Collin Albertyn, Susanna Maria Krüger, Ayanda Maqhashu, Jacquiline Goedhals, Andri Grobbelaar, Marike Badenhorst   +7 more
wiley   +1 more source

Efficacy Of Different Protocols Of Ovulation Synchronization And Resynchronization In Argentinian Buffalo Herds [PDF]

, 2019
During the last years bufalo reproductive researchers have been tried to develop and apply fxed timed artifcial insemination protocols to increase pregnancy rates to maximize improvement.
Berdugo, Jesus Alfredo, Cardona Maya, Walter Darío, Crudeli, Gustavo Angel, de la Sota, Rodolfo Luzbel, Konrad, José Luis, Vallejos, Natalia, Yuponi, Roberto Gregorio   +6 more
core  

Comparison of PUFA profiles in the blood and in follicular fluid and its association with follicular dynamics after PGF2α induced luteolysis in dairy cows [PDF]

, 2016
The objectives of the present study were to examine the fatty acid (FA) profiles in serum and in the follicular fluid (FF) and the association between polyunsaturated fatty acid level (PUFA) and follicular growth dynamics following induced luteolysis in ...
Adamov, Nikola, Atanasov, Branko, Davkov, Filip, Dovenski, Toni, Hajrulai-Musliu, Zehra, Hostens, Miel, Opsomer, Geert, Uzunov, Risto, Velev, Romel   +8 more
core   +3 more sources

Sub‐Anesthetic Ketamine Administration Decreases Deviance Detection Responses at the Cellular, Population‐ and Mesoscale Levels

European Journal of Neuroscience, Volume 63, Issue 7, April 2026.
During an auditory deviance detection task, naïve mice and mice injected with sub‐anesthetic ketamine show marked differences in spiking activity and mesoscale connectivity. Control mice exhibit a biphasic spiking response to deviant sounds, whereas the late spiking component is abolished by ketamine.
Maria Isabel Carreño‐Muñoz, Alessandra Ciancone Chama, Pegah Chehrazi, Bidisha Chattopadhyaya, Graziella Di Cristo   +4 more
wiley   +1 more source

Physiological, cytological, and reproductive hormone characterization of estrus in Pasundan heifers synchronized with double injection of prostaglandin F2α [PDF]

Veterinary World
Background and Aim: Pasundan cattle, a native Indonesian breed with valuable reproductive traits, face population decline due to limited conservation efforts.
Rini Widyastuti, Nena Hilmia, Diky Ramdani, Rahmat Hidayat, Iman Hernaman, Andre Rivanda Daud, Ken Ratu Ghazirah Alhuur, Matni Syifa Bayani, Rangga Setiawan, Sigit Prastowo, Santoso Santoso, Vidi Wulandari   +11 more
doaj   +1 more source

GABA receptor modulation of arcuate kisspeptin neuron bursting and synchronization activity in female mice

Journal of Neuroendocrinology, Volume 38, Issue 4, April 2026.
Abstract The arcuate nucleus kisspeptin (ARNKISS) neurons intermittently synchronize their activity to operate as the GnRH pulse generator and drive pulsatile reproductive hormone secretion in mammals. Although ARNKISS neurons are known to receive various GABAergic inputs, the effects of GABAA and GABAB receptor modulation on their ability to ...
Toby Eddleston, Paul G. Morris, Allan E. Herbison   +2 more
wiley   +1 more source

Efficacy of a Cue-Mate Intravaginal Insert and Injection of Prostaglandin F2α for Synchronizing Estrus in Hanwoo Cattle

Journal of Animal Reproduction and Biotechnology, 2014
The present study was performed on farm animals to test the effectiveness of progesterone-releasing intravaginal device (Cue-Mate® 1.56 g) and injection of prostaglandin F2α (PGF2α) for synchronization estrus in Hanwoo cattle.
Sang-Rae Cho, Kuldeep Kumar, Seong-Heum Yeon, Sung-Hwan Lee, Ui-Hyung Kim, Ki-Yong Chung, Hyeon-Shup Kim, Myeung Sik Lee, Chang-Seok Park , Byoung-Chul Yang   +9 more
doaj   +1 more source