Ultrasonographic characteristics of the preovulatory follicles could be useful to predict ovulation.
R. I. Derar, H. A. Hussein 2011, 'Ovarian Follicular Dynamics during the Estrous Cycle in Jennies in Upper Egypt', Veterinary Medicine Internationalhttp://dx.doi.org/10.4061/2011/860518. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The preovulatory follicles reached about 500 mum in diameter.
Jean-Marie Exbrayat, Farida Khammar, ThĂŠrese Gernigon-Spychalowicz, Amina Boubekri 2010, 'Morphometry and immunohistochemistry of follicles growth and steroidogenesis in saharianwild sand rat, Psammomys obesus, ovary.', Folia Histochemica et Cytobiologicahttp://czasopisma.viamedica.pl/fhc/article/view/4276. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The mean diameter of preovulatory follicles was 7.6 ± 2.1 mm.
M. Zongo, A. Yamboué, I. Nabaloum, D. Sanou 2019, 'Ultrasound of follicular development and ovulation in induced estrus in Sahelian goats',Revue d'Elevage et de Médecine Vétérinaire des Pays Tropicauxhttp://revues.cirad.fr/index.php/REMVT/article/view/31671. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Ovaric structures were recorded (preovulatory follicles and ovulation).
Germán Ramírez, Gerardo López, Edgar Cifuentes 2006, 'Uterine involution in colombian fine pace mares, measured by ultrasonography and endometrialcytology', Revista de Medicina Veterinariahttp://revistas.lasalle.edu.co/index.php/mv/article/view/2061. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Our data confirmed the down-regulation of estrogen synthesis genes during the preovulatory period.
Nguyen Thaovi, Montfort Jerôme, Bobe Julien, Fostier Alexis 2006, 'Identification of new participants in the rainbow trout (Oncorhynchus mykiss)oocyte maturation and ovulation processes using cDNA microarrays', Reproductive Biology and Endocrinologyhttp://www.rbej.com/content/4/1/39. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Estradiol per preovulatory follicle was similar in both letrozole cycles to that observed in the natural cycles.
Brunengraber Lisa N, Hussein Mostafa, Mousa Noha, Abdelaleem Mahmoud A, Bedaiwy MohamedA, Casper Robert F 2011, 'Hormonal, follicular and endometrial dynamics in letrozole-treated versus naturalcycles in patients undergoing controlled ovarian stimulation', Reproductive Biology and Endocrinologyhttp://www.rbej.com/content/9/1/83. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Granulosa and theca cells were collected from the preovulatory follicles and cultured as a co-culture, thus resembling follicles in vivo.
Ewa L. Gregoraszczuk 2002, 'Dioxin exposure and porcine reproductive hormonal activity Exposição à dioxina e atividadehormonal reprodutiva porcina', Cadernos de Saúde Públicahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-311X2002000200010. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Nevertheless, growth rate (mm/d) of the preovulatory follicle was higher (p<0.05) in synchronized estrous.
Andrés Quezada-Casasola, Leonel Avendaño-Reyes, Ulises Macías-Cruz, José A Ramírez-Godínez,Raymundo R Rivas-Cáceres 2015, 'Estrous behavior, ovulatory follicle dynamics, and corpus luteum size in Creole cowsafter spontaneous or prostaglandin F2α-induced estrous', Revista Colombiana de Ciencias Pecuariashttp://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-06902015000400003&lng=en&tlng=en. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The potential exists to increase genetic progress through repeatedly harvesting oocytes from preovulatory follicles of genetically superior females.
Jack H. Britt 2008, 'Oocyte development in cattle: physiological and genetic aspects', Revista Brasileira de Zootecniahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982008001300013. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)