Results 11 to 20 of about 1,151 (190)

Effect of gonadotropin administration on reproductive performance in relation to the age at first conception, time of application, and body condition of weaned sow [PDF]

Archives Animal Breeding
The administration of hormone preparations to synchronize the onset of oestrus in gilts and sows is a good way of achieving breeding objectives economically on large-scale farms.
M. Vogrin Bračič, M. Prevolnik Povše, J. Skok, D. Škorjanc   +3 more
doaj   +3 more sources

Influência das gonadotrofinas na regulação da maturação nuclear de oócitos eqüinos Influence of gonadotropins on nuclear maturation of equine oocytes

Ciência Rural, 1998
A maturação in vitro, fecundação e as técnicas de cultivo de embriões na espécie eqüina são extremamente importantes e necessárias para se examinar as causas de repetição de cio, redução de concepção em éguas velhas e também para a preservação da espécie
Juan Manuel Larre Borges, Mara Iolanda Batistella Rubin, Carlos Antonio Mondino Silva, Paulo Bayard Dias Gonçalves, Ana Cristina Rieck   +4 more
doaj   +2 more sources

Advances in the Use of Recombinant Gonadotropins for Reproductive Biotechnologies in Ruminants: A Review [PDF]

Reproduction in Domestic Animals, Volume 61, Issue 5, May 2026.
ABSTRACT Recombinant gonadotropins, particularly recombinant follicle‐stimulating hormone (rFSH) and recombinant equine chorionic gonadotropin (reCG), have emerged as viable alternatives to traditional animal‐derived hormones in reproductive biotechnologies. This review aims to provide an updated and comprehensive overview of recombinant gonadotropins,
Vitória Leite Di Domenico, Fabiane Pereira de Moraes, Natália Ávila de Castro, Fernando Caetano de Oliveira, Diogo Magnabosco, Bernardo Garziera Gasperin   +5 more
wiley   +2 more sources

Regulation of P450 oxidoreductase by gonadotropins in rat ovary and its effect on estrogen production [PDF]

Reproductive Biology and Endocrinology, 2008
Background P450 oxidoreductase (POR) catalyzes electron transfer to microsomal P450 enzymes. Its deficiency causes Antley-Bixler syndrome (ABS), and about half the patients with ABS have ambiguous genitalia and/or impaired steroidogenesis.
Uesaka Miki, Kangawa Kenji, Kokame Koichi, Mizutani Tetsuya, Yazawa Takashi, Inaoka Yoshihiko, Umezawa Akihiro, Miyamoto Kaoru   +7 more
doaj   +2 more sources

Interleukin-1 (IL-1) system gene expression in granulosa cells: kinetics during terminal preovulatory follicle maturation in the mare

Reproductive Biology and Endocrinology, 2003
Background A growing body of evidences suggests that the ovary is a site of inflammatory reactions, and thus, ovarian cells could represent sources and targets of the interleukin-1 (IL-1) system.
Gérard Nadine, Martoriati Alain
doaj   +2 more sources

Is FSH combined with equine chorionic gonadotropin able to modify lipid metabolism in bovine superstimulated antral follicles? [PDF]

Anim Reprod
Lipid metabolism is essential for ensuring oocyte maturation and embryo development. β-Oxidized fatty acids (FA) are a potent source of energy for cells, particularly for bovine somatic follicular cells.
Mani, Fernanda [UNESP], Nunes, Sarah Gomes [UNESP], Franchi, Fernanda Fagali [UNESP], de Souza Castilho, Anthony César, Fontes, Patricia Kubo [UNESP], Santos, Priscila Helena [UNESP], Giroto, Alan Brunholi   +6 more
core   +2 more sources

Horse Welfare During Equine Chorionic Gonadotropin (eCG) Production [PDF]

Animals, 2019
Collection of blood from pregnant mares for extraction of equine chorionic gonadotropin (eCG) is a critical but relatively unknown and poorly regulated practice in the countries in which it occurs. Equine chorionic gonadotropin is a hormone that is widely used to enhance reproductive performance and management of dairy and beef cattle, sheep, goats ...
Xavier Manteca Vilanova, Nancy De Briyne, Bonnie Beaver, Patricia V. Turner   +3 more
openaire   +3 more sources

Evaluation of estradiol benzoate as a pre-treatment for oocyte recovery in sheep

Semina: Ciências Agrárias, 2014
The objective of this study was to compare the number of follicles, oocytes and the recovery rate in sheep submitted to the one-shot protocol with or without ovarian priming with estradiol benzoate (EB).
Marilu Constantino Max , Gustavo Martins Gomes Santos, Fábio Morotti , Katia Cristina Silva-Santos, Fabiana Andrade Melo-Sterza , Thales Ricardo Rigo Barreiros , Marcelo Marcondes Seneda   +6 more
doaj   +1 more source

Anabolic vs. Equine Reproduction

, 2023
El uso de agentes anabólicos en equinos tiene como objetivo mejorar la ganancia de peso, los niveles de energía y la masa muscular especialmente en caballos que se están recuperando de alguna enfermedad, cirugía, sobreesfuerzo, entre otros. Deben tenerse
Moreno Carrillo, Paula Juliana, Martínez Molina, Angélica Andrea, Torres Murcia, Kelly Alejandra, Colmenares López, Johana Andrea, Molina Ramos, Carmen Leonide   +4 more
core   +1 more source

Fast renal trapping of porcine Luteinizing Hormone (pLH) shown by ¹²³I-scintigraphic imaging in rats explains its short circulatory half-life

Reproductive Biology and Endocrinology, 2003
Background Sugar moieties of gonadotropins play no primary role in receptor binding but they strongly affect their circulatory half-life and consequently their in vivo biopotencies. In order to relate more precisely hepatic trapping of these glycoproteic
Locatelli Alain, Magallon Thierry, Leroux Hervé, Lecompte François, Bernard Serge, Klett Danièle, Lepape Alain, Combarnous Yves   +7 more
doaj   +1 more source