Results 31 to 40 of about 25,757 (296)

Effects of presence or absence of a dominant follicle estimated by a single ultrasound examination at the time of follicular aspiration on superovulatory responses and embryo production in lactating simmental cows [PDF]

Kafkas Universitesi Veteriner Fakültesi Dergisi, 2019
The aim of the study was to evaluate effects of presence or absence of a dominant follicle (DF) estimated by a single ultrasound examination at the time of follicular aspiration (FA) on superstimulatory and superovulatory responses and embryo production ...
Ümüt CİRİT, Mehmet Ferit ÖZMEN, Mehmet KÖSE, İbrahim KÜÇÜKASLAN, Elif Merve ÇINAR, Hüseyin Gökhan KUTSAL   +5 more
doaj   +1 more source

Effect of the locational relationship between the 1st wave dominant follicle and the corpus luteum on conception rate after embryo transfer: data analysis of 297 embryo transfers from a commercial embryo production program [PDF]

, 2022
The ovarian structures identified at the time of ET are important for the selection of recipients. In previous report, the first-wave dominant follicle, located ipsilateral to the corpus luteum on the ovary, was associated with reduced conception rate ...
Matsui, Motozumi, Hayama, Koh, Oono, Yoshio, Nakada, Ken, kayano, Mitsunori, Hazano, Ken, Goto, Akira, Urakawa, Manami, Haneda, Shingo   +8 more
core   +2 more sources

Effect of recombinant LH supplementation timing on clinical pregnancy outcome in long-acting GnRHa downregulated cycles

BMC Pregnancy and Childbirth, 2022
Background Timely and moderate luteinizing hormone (LH) supplementation plays positive roles in in vitro fertilization/intracytoplasmic sperm injection and embryo transfer (IVF/ICSI-ET) cycles with long-acting gonadotropin-releasing hormone agonist ...
Chenyang Huang, Xiaoyue Shen, Jie Mei, Yanxin Sun, Haixiang Sun, Jun Xing   +5 more
doaj   +1 more source

Rescue from dominant follicle atresia by follicle-stimulating hormone in mice

Genetics and Molecular Research, 2013
We investigated the effects of follicle-stimulating hormone (FSH) on atresia of the dominant follicle and changes in relevant apoptosis genes in granulosa cells of dominant follicles regulated by FSH in vivo. Four-week-old mice were administered FSH by intraperitoneal injection to induce follicular maturation. Granulosa cells of dominant follicles were
X L, Zhou, Y, Teng, R, Cao, H, Fu, K, Xiong, W X, Sun, C C, Zhu, X J, Huang, P, Xiao, H L, Liu   +9 more
openaire   +2 more sources

Prolonged dominance of follicles and reduced viability of bovine oocytes [PDF]

Reproduction, 1996
Abstract Prolonging the lifespan of bovine follicles is known to result in reduced fertility after ovulation and insemination. In this study, the effect of prolonged development of follicles on oocyte viability was examined. In Expt 1, six cows in the aspirated-prolonged-follicle group received a vaginal progesterone releasing device ...
I, Revah, W R, Butler
openaire   +2 more sources

DETERMINATION OF OVULATION TIME IN GAYO MARES BASED ON IMAGE OF PREOVULATORY FOLLICLE GROWTH

Jurnal Kedokteran Hewan, 2023
This study aimed to obtain the ultrasound image of preovulatory follicle growth in gayo mares to predict the ovulation time. This study used three Gayo mares and one gayo stallion for teaser aged 5-10 years and weighed 200-250 kg.
Juli Melia, A Amrozi, Iman Supriatna, Muhammad Agil   +3 more
doaj   +1 more source

Efeito do tempo da aplicação de prostaglandina na resposta folicular em ovelhas durante o ciclo estral Effect of time of prostaglandin administration on follicular response in ewes during oestrous cycle

Revista Brasileira de Zootecnia, 2011
Avaliou-se a resposta ovariana, usando ultrassonografia transretal, à aplicação de duas injeções de prostaglandina (PGF2α) em diferentes intervalos.
Luis Fernando Uribe-Velásquez, Maria Inês Lenz Souza, Jose Henry Osorio   +2 more
doaj   +1 more source

Mechanisms regulating follicular development and selection of the dominant follicle [PDF]

Bioscientifica Proceedings, 2019
Reproductive function is an integrated process encompassing both extra-ovarian signals, such as gonadotrophins, and intrafollicular factors, such as locally produced growth factors. Initiation of primordial follicle growth and the early stages of folliculogenesis can occur without gonadotrophins.
R, Webb, B, Nicholas, J G, Gong, B K, Campbell, C G, Gutierrez, H A, Garverick, D G, Armstrong   +6 more
openaire   +2 more sources

A simple mathematical model of the bovine estrous cycle: Follicle development and endocrine interactions

, 2010
Bovine fertility is the subject of extensive research in animal sciences, especially because fertility of dairy cows has declined during the last decades.
Röblitz, S., Boer, H.M.T., Veerkamp, Roel F., H.M.T. Boer, Woelders, H., Boer, H. Marike T., R.F. Veerkamp, Röblitz, Susanna, C. Stötzel, Deuflhard, Peter, Stötzel, C., Stötzel, Claudia, Woelders, Henri, Veerkamp, R.F., Deuflhard, P., P. Deuflhard, S. Röblitz, H. Woelders   +17 more
core   +1 more source

Concentração plasmática de progesterona em novilhas receptoras submetidas à administração de rbST, GnRH ou hCG no quinto dia do ciclo estral Plasma progesterone concentration in recipient heifers submitted to administration of rbST, GnRH or hCG on day five of the estrous cycle

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2001
Avaliaram-se a habilidade de diferentes hormônios administrados no quinto dia do ciclo estral em induzir a ovulação do folículo dominante da primeira onda folicular (FDPO) e formar um corpo lúteo acessório (CLa) e seus efeitos sobre a concentração ...
J.F. Fonseca, J.M. Silva Filho, M.S. Palhares, J.R.M. Ruas, A. Pinto Neto   +4 more
doaj   +1 more source