Results 61 to 70 of about 2,924 (182)

RFRP3 influences basal lamina degradation, cellular death, and progesterone secretion in cultured preantral ovarian follicles from the domestic cat. [PDF]

, 2019
The hypothalamic neuropeptide RFRP3 can suppress hypothalamic GnRH neuron activation and inhibit gonadotropin release from the anterior pituitary. RFRP3 is also produced locally in the ovary and can inhibit steroidogenesis and follicle development in ...
Bentley, George, Comizzoli, Pierre, Wilsterman, Kathryn   +2 more
core   +1 more source

The Mare Model to Study the Effects of Ovarian Dynamics on Preantral Follicle Features. [PDF]

, 2016
Ovarian tissue collected by biopsy procedures allows the performance of many studies with clinical applications in the field of female fertility preservation.
Alves, Benner G, Alves, Kele A, de Tarso, Saulo G S, Figueiredo, José R, Gambarini, Maria L, Gastal, Eduardo L, Gastal, Gustavo D A, Gastal, Melba O   +7 more
core   +3 more sources

Microvascularization of corpus luteum of bovine treated with equine chorionic gonadotropin

Microscopy Research and Technique, 2015
ABSTRACTThis study aimed to evaluate the morphological changes in microvascular density and corpus luteum (CL) vascularization in cows treated with eCG during stimulatory and superovulatory protocols. Sixteen cows were synchronized and divided into three groups: control (n = 6), stimulated (n = 4) and superovulated (n =6), one was submitted to estrous ...
Moura, Carlos Eduardo Bezerra, Rigoglio, Nathia Nathaly, Braz, Janine Karla França da Silva, Machado, Marcello, Baruselli, Pietro S., Papa, Paula de Carvalho   +5 more
openaire   +2 more sources

Variation in Uterine and Serum Proteins During the Reproductive Cycle in Dairy Cows Following Low and High Dietary Protein Intake

Veterinary Medicine and Science, Volume 11, Issue 6, November 2025.
This study investigates the effect of different dietary protein levels (16% and 19%) on serum and uterine fluid protein concentrations in dairy cows at various stages of the reproductive cycle. The results showed that the diet with 19% protein induced significant changes in protein profiles and may enhance reproductive health and performance.
Akbar Pirestani, Elmira Ziya Motalebipour   +1 more
wiley   +1 more source

Onset and Heterogeneity of Responsiveness to FSH in Mouse Preantral Follicles in Culture [PDF]

, 2016
The obligatory role of follicle-stimulating hormone (FSH) in normal development and function of ovarian antral follicles is well recognized, but its function in preantral growth is less clear. The specific objective of this study was to investigate the
Fenwick, M., Franks, S., Hardy, K., Laird, M., Mora, J., Thomson, K.   +5 more
core   +1 more source

Structural studies on equine glycoprotein hormones. Amino acid sequence of equine chorionic gonadotropin beta-subunit.

Journal of Biological Chemistry, 1987
The complete amino acid sequence of the beta-subunit of equine chorionic gonadotropin (eCG beta) has been established by both automated Edman and manual 5-dimethylaminonaphthalene-1-sulfonyl-Edman degradations. Specific fragments were produced by cleavage with Staphylococcus aureus V8 protease, trypsin, or dilute HCl.
H, Sugino, G R, Bousfield, W T, Moore, D N, Ward   +3 more
openaire   +2 more sources

Energy Intake During the Transition Period Triggers Substantial Impacts on Body Weight, Milk Production Efficiency, Milk Composition and Blood Biochemical Constituents in Fat‐Tailed Ewes

Veterinary Medicine and Science, Volume 11, Issue 6, November 2025.
The nutritional management during the transition period is crucial for sheep. This research highlighted a significant association between the energy intake of ewes and various factors, including their body weight, milk production and composition, production efficiency, as well as key blood biomarkers indicative of the metabolic status of the animals ...
Amir Mousaie, Mohammad Reza Ghaedifard, Rouhollah Azizpour, Ahmad Ali Sadeghi   +3 more
wiley   +1 more source

Optimizing Productive Performance of Laying Hen and Egg Quality Under Cold Stress: A Dietary Approach With Crude Protein, Methionine and Zinc

Veterinary Medicine and Science, Volume 11, Issue 6, November 2025.
Higher dietary Met, increased EW. However, interactions between CP and Met levels influenced egg shape index and Haugh unit. The combination of lower Met (0.22%) and intermediate CP (14.30%) yielded the highest Haugh units, while lower CP and Met resulted in the poorest egg shape index. ABSTRACT Background Cold stress reduces egg production and quality
Ahmad Mohebbifar, Shadi Sedgh‐Gooya, Mehran Torki   +2 more
wiley   +1 more source

Interaction between IGF1 and IGFBPs in bovine cystic ovarian disease [PDF]

, 2013
Cystic ovarian disease (COD) is one of the main factors responsible for reproductive disorders in cattle. Although the pathogenesis and mechanism of cyst formation are not fully understood, it has been proposed that the IGF system could play an essential
Barbeito, Claudio Gustavo, Colombero, M., Ortega, Hugo Hector, Rey, Florencia, Rodríguez, Fernanda Mariel, Salvetti, Natalia Raquel, Stangaferro, M.   +6 more
core   +3 more sources

Prediction Values for the Influence of Fetal Sex on Plasma Progesterone Concentration in Crioulo Breed Mares: A Preliminary Investigation

Reproduction in Domestic Animals, Volume 60, Issue 10, October 2025.
ABSTRACT In equine reproduction, determining foetal sex is of economic and strategic importance, but currently available methods are often invasive, costly, or require specialised expertise. This study aimed to assess whether plasma progesterone concentrations could serve as a predictive tool for foetal sex determination in Criollo mares between the ...
Natália Santana Siqueira de Lara, Romildo Romualdo Weiss, Eunice Oba, Luiz Ernandes Kozicki, Fernando Andrade Souza, Tacia Gomes Bergstein‐Galan, Eloisa Muehlbauer, Mayara Silvestri, Pedro Henrique Lomba de Lima, Eduarda Stankiwich Vaz   +9 more
wiley   +1 more source