Results 11 to 20 of about 23,859 (257)

Follicular Size Threshold for Ovulation Reassessed. Insights from Multiple Ovulating Dairy Cows

Animals, 2022
In Bos. taurus cattle, follicular deviation to dominance begins when the selected ovulatory follicle reaches a mean diameter of 8.5 mm. The dominant follicle acquires the capacity to ovulate when it reaches a diameter of about 10 mm.
Fernando López-Gatius, Mònica Llobera-Balcells, Roger J. Palacín-Chauri, Irina Garcia-Ispierto, Ronald H. F. Hunter   +4 more
doaj   +1 more source

Effect of elevating luteinizing hormone action using low doses of human chorionic gonadotropin on double ovulation, follicle dynamics, and circulating follicle-stimulating hormone in lactating dairy cows

Journal of Dairy Science, 2022
: Double ovulation and twin pregnancy are undesirable traits in dairy cattle. Based on previous physiological observations, we tested the hypothesis that increased LH action [low-dose human chorionic gonadotropin (hCG)] before the expected time of ...
Victor E. Gomez-Leon, Adam D. Beard, O.J. Ginther, Milo C. Wiltbank   +3 more
doaj   +1 more source

Understanding the Ovarian Interrelationship with Low Antral Follicle Counts (AFC) in the In Vivo Bos indicus Cow Model: Unilateral and Bilateral Main AFC as Possible Biomarkers of Ovarian Response to Hormonal Synchronisation

Biology, 2022
The antral follicle count (AFC) is a test in which the number of oocyte-containing follicles that are developing in both ovaries are visually counted. The count of these follicles strongly relates to the population of the growing follicle reserve on the ...
Warittha U-krit, Surasak Wadsungnoen, Punnawut Yama, Jakree Jitjumnong, Molarat Sangkate, Nalinthip Promsao, Napatsorn Montha, Paiwan Sudwan, Raktham Mektrirat, Julakorn Panatuk, Wilasinee Inyawilert, Payungsuk Intawicha, Pin-Chi Tang, Tossapol Moonmanee   +13 more
doaj   +1 more source

Uterine and systemic inflammation influences ovarian follicular function in postpartum dairy cows. [PDF]

PLoS ONE, 2017
The objective of this study was to determine the effects of uterine and systemic inflammatory responses to uterine bacterial contamination at calving in dairy cows on the growth and ovulatory outcomes of the first dominant follicle postpartum.
Soon Hon Cheong, Ocilon G Sá Filho, Victor A Absalon-Medina, Augusto Schneider, W R Butler, Robert O Gilbert   +5 more
doaj   +1 more source

Prediction of Ovarian Follicular Dominance by MRI Phenotyping of Hormonally Induced Vascular Remodeling

Frontiers in Medicine, 2021
In the mammalian female, only a small subset of ovarian follicles, known as the dominant follicles (DFs), are selected for ovulation in each reproductive cycle, while the majority of the follicles and their resident oocytes are destined for elimination ...
Liat Fellus-Alyagor, Inbal E. Biton, Hagit Dafni, Filip Bochner, Ron Rotkopf, Nava Dekel, Michal Neeman   +6 more
doaj   +1 more source

QUANTITY AND QUALITY OF HARVESTED BUFFALO OOCYTES IN RELATION TO OVARIAN STRUCTURES AND METHODS OF COLLECTION [PDF]

Assiut Veterinary Medical Journal, 2005
A total number of 68 buffalo-cows ovaries were collected from slaughterhouse. In the first part of this study, 40 ovaries were classified according to the ovarian structures into: those with dominant follicle (DF, n = 14) , with corpus luteum  (CL, n=9 ),
A.KH. ABDEL-RAZEK, A.M. ALI
doaj   +1 more source

Quantitative analyses of insulin-like peptide 3 and sex steroid hormones in dominant follicles and corpora lutea during the estrus cycle and in follicular cysts in beef heifers

The Journal of Reproduction and Development, 2022
Insulin-like peptide 3 (INSL3) and sex steroids were measured in bovine dominant follicles and corpora lutea during the estrus cycle and in follicular cysts.
Hewage Dilhan Anuradha WIMALARATHNE, Hiroaki WAKO, Noritoshi KAWATE   +2 more
doaj   +1 more source

Monitoring of Ovarian Follicular Development and Ovulation with Transvaginal Sonography (TVS) in Infertile Women in Eastern Region of Nepal

Journal of Nobel Medical College, 2016
Background Ultrasonography is the first line imaging modality for evaluation of ovaries, monitoring ovarian follicular development and detecting ovulation in infertile women; thus plays a significant role in infertility management.
Manoj Bhattarai
doaj   +1 more source

Histomorphometry of dominant and subordinate bovine ovarian follicles [PDF]

The Anatomical Record, 2000
The study was designed to quantitatively characterize the histomorphological attributes of dominant and subordinate follicles in relation to follicular wave dynamics. Heifers (n = 27) were examined daily using ultrasonography to record the growth of individual follicles from 2 days before ovulation until the day of ovariectomy to obtain growing (n = 7),
J, Singh, G P, Adams
openaire   +2 more sources

Attaining dominance in vivo: distinguishing dominant from challenger follicles in humans [PDF]

Human Reproduction, 1997
This study provides the first report of local suppression of follicle growth in vivo by the dominant follicle in humans. Analyses were focused on antral follicles > or =6 mm in diameter, classified as dominant (ovulatory) and challenger (large, non-ovulatory) follicles. We examined antral follicle characteristics, interactions and location in the ovary
Gore, M. A., Nayudu, P. L., Vlaisavljevic, V.   +2 more
openaire   +3 more sources