Results 51 to 60 of about 171,951 (173)

Synchronization in Networks of Hindmarsh-Rose Neurons [PDF]

, 2008
Synchronization is deemed to play an important role in information processing in many neuronal systems. In this work, using a well known technique due to Pecora and Carroll, we investigate the existence of a synchronous state and the bifurcation diagram ...
Kocarev, L., L. KOCAREV, Righero, Marco, Checco, Paolo, Biey, Mario   +4 more
core   +1 more source

Divergent effects of hyperandrogenemia on the female reproductive neuroendocrine axis under different physiological conditions

Journal of Neuroendocrinology, Volume 38, Issue 10, October 2026.
Abstract The hypothalamic–pituitary–gonadal (HPG) axis coordinates reproductive function and incorporates gonadal sex steroid feedback to regulate gonadotropin secretion in a homeostatic manner. In females, ovarian estrogens and progestins act as the primary negative feedback signals to suppress luteinizing hormone (LH) release, whereas in males ...
Lillian Rose, Alexander S. Kauffman
wiley   +1 more source

Estrous Synchronization in Lactating Cows [PDF]

, 1993
The objective of any successful synchronization program is to manipulate the estrous cycle of normally cycling females so that a large percentage will exhibit estrus with normal fertility at a pre-determined time.
Hixon, Doug L.
core  

EFFECTIVENESS OF DIFFERENT PROTOCOLS FOR INDUCING ESTRUS OF ARDY GOATS DURING THE NON-BREEDING SEASON. [PDF]

Journal of Animal and Poultry Production, 2010
The experiment was conducted to determine the reproductive performance (kidding rate and litter size) of estrus synchronized local Ardy goats after different protocols and trans-cervical artificial insemination (TC-AI).
K. Sobayil
doaj   +1 more source

Ethanolamine plasmalogens increase luteinising hormone pulsatility and are associated with GPR61 expression in bovine gonadotrophin‐releasing hormone neurons

Journal of Neuroendocrinology, Volume 38, Issue 10, October 2026.
Ethanolamine plasmalogens increased LH pulse frequency. GPR61 was expressed in GnRH neurons and gonadotrophs, suggesting a role in neuroendocrine regulation. Ethanolamine plasmalogens (EPls), but not choline plasmalogens (CPls), may act via GPR61 expressed in GnRH neurons in the preoptic area and in anterior pituitary gonadotrophs.
Hiroya Kadokawa, Tomoaki Kubo, Kana Kobayashi, Denis Karani Wanjiru, Yvan Bienvenu Niyonzima   +4 more
wiley   +1 more source

Beef Heifer and Cow Estrous Synchronization Programs

, 2010
Recent estrous synchronization research has aimed to develop reliable protocols that: 1) rely solely on fixed-timed artificial insemination (TAI); 2) require a maximum of three animal handlings; and 3) are successful in estrous-cycling and non-cycling ...
Lamb, G. C.
core   +1 more source

OVULATION SYNCHRONIZATION IN eCG-TREATED GOATS AFTER A PGF??-BASED SHORT TIME PROTOCOL DURING THE BREEDING SEASON

Chilean Journal of Agricultural & Animal Sciences
The aim of this study was to evaluate whether the administration of 100 IU of equine chorionic gonadotropin (eCG)  or human chorionic gonadotropin (hCG) at the time of the second injection of a double prostaglandin F??
Juan Manuel Guillen-Muñoz, Osiris Ortiz-Contreras, Nesrein M. Hashem, Luis Antonio Luna-Garcia, Juan Luis Morales-Cruz, Hugo Zuriel Guerrero-Gallego, Fernando Sanchez-Davila, Zurisaday Santos Jimenez   +7 more
doaj   +1 more source

Behavioral Response of Arctocephalus australis to Pedestrian Disturbance During the Breeding Season: Implications for Wildlife Tourism Management

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT The South American fur seal (Arctocephalus australis) breeds in dense colonies along the Peruvian coast, mostly within protected areas managed by the Servicio Nacional de Áreas Naturales Protegidas por el Estado (SERNANP). To support responsible wildlife tourism near breeding sites, we evaluated the behavioral responses to controlled ...
Maite Arangüena‐Proaño, Carlos Calvo‐Mac, Yann Tremblay   +2 more
wiley   +1 more source

Effects of Different Estrous Synchronization Methods on the Composition of Simmental Cow's Milk

, 2017
Background: Estrous synchronization is one of the primary applications performed to improve the fertility and to consolidate the parturition times in dairy cattle farms.
Calicioglu, Mehmet, Incili, Gokhan Kursad, Saat, Nevzat, Risvanli, Ali, Seker, Ibrahim   +4 more
core   +1 more source

The Kuramoto model: A simple paradigm for synchronization phenomena [PDF]

, 2005
Synchronization phenomena in large populations of interacting elements are the subject of intense research efforts in physical, biological, chemical, and social systems.
Acebrón, Juan A., Ritort Farran, Fèlix, Bonilla, L. L. (Luis López), 1956-, Pérez-Vicente, Conrado, 1962-, Spigler, Renato   +4 more
core   +1 more source