English: The aim of the present study was to induce oestrus in postpartum anoestrus dairy cows after the application of two hormonal treatments. With this. Controle sobre GnRH durante o anestro pós-parto em bovinos A secreção do hormônio folículo estimulante (FSH) em vacas retorna aos padrões do ciclo. 18 jun. O seu uso é recomendado para melhorias na fixação e taxas de concepção de vacas em anestro pós-parto, face auxiliar na sincronia do estro.

Author: Taubei Fenrir
Country: Burundi
Language: English (Spanish)
Genre: Software
Published (Last): 19 January 2012
Pages: 488
PDF File Size: 4.50 Mb
ePub File Size: 17.45 Mb
ISBN: 392-2-58043-657-4
Downloads: 85469
Price: Free* [*Free Regsitration Required]
Uploader: Tojakazahn

Ovarian structures and uterine environment are associated with phenotypic and genetic merit for performance in lactating dairy cows.

Associations among size and numbers of ovarian follicles, uterine involution, and hormones in serum and follicular fluid. Proceedings of the National Academy Sciencesv. Biochemistry and Cell Biologyv.

How to cite this article. Adipose obese gene product, leptin, inhibits bovine ovarian thecal cell steroidogenesis. Endocrinology ; 6: A adiponectina possui dois tipos de receptores: Effects of induction of low plasma progesterone concentrations with a progesterone-releasing intravaginal device on follicular turnover and fertility anestto cattle.

English Copyright of Revista Veterinaria is the property of Universidad Nacional del Nordeste and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder’s express written permission.

Revista MVZ Córdoba

Pregnancy diagnosis was determined between 45 and 50 days post-insemination. Syncronization of estrus in beef cattle with norgestomet and estradiol valerate. J Reprod Fert ; 30 Supp: A role for kisspeptins in the regulation of gonadotropin secretion in the mouse. Molecular aspects of bovine cystic ovarian disease pathogenesis.

Influence of body condition at calving and postpartum nutrition on endocrine function and vzcas performance of primiparous beef cows. Dairy cattle ELISA PCR bovine bovines cattle environment feeding fermentation growth heritability nutrition prevalence progesterone reproduction ruminants.


However, remote access to EBSCO’s databases from non-subscribing institutions is not allowed if the purpose of the use is for commercial gain through cost reduction or avoidance for a non-subscribing institution.

Pituitary receptors for GnRH and estradiol and pituitary content of gonadotropins in beef cows. A novel avian hypothalamic peptide inhibiting gonadotropin release. Mechanisms regulatin suckling-mediated anovulation in the cow.

Reproduction in Domestic Animalsv. Regulation of progesterone receptor messenger ribonucleic acid in the rat medial preoptic nucleus by estrogenic and antiestrogenic compounds: Brazilian Journal of Medical and Anestrp Researchv.

Incidence of ovarian follicular cysts and their effect on reproductive performance in dairy cows: The incidence of ovarian follicular cysts OFC in relation to reproductive performance in a dairy herd was determined. Nutritionaland suckling-mediated anovulation in beef cows J Anim Sci ; 81 Sup 2: The criteria used for the diagnosis of OFC were: Inhibition of metastin kisspeptin -GPR54 signaling in the arcuate nucleus-median eminence region during lactation in rats.

Domest Anim Endocrinol ; 29 1: The treatments 1 received only one mineral supplement and treatments 2 received the same batch mineral supplement added 2.

Anestro posparto en ganado bovino en el trópico | Báez | Revista MVZ Córdoba

Is there an FSH-releasing factor? Opioid inhibition of luteinizing hormone secretion during the postpartum period in suckled beef cows.

J Reprod Fertil ; 90 2: Acceso marzo 31,disponible en http: Pattern of follicular growth and resumption of ovarian activity in post-partum beef suckler cows. Up to the s, classic clinical signs in cows with OFC as described in the literature were: Journal of Reproduction and Fertilityv. With this purpose a group of 89 dairy cows in anoestrus, with 60 or more days from calving, were selected in the south region of Chile.


The gonadotrophic treatments may be useful tools for the reproductive management of postpartum anestrus in dairy cows. Although the etiology of OFC has not been established, the absence or insufficiency of the preovulatory LH surge is considered to be a crucial factor in the development of this condition PeterOrtega et al Oestrus detection techniques and insemination strategies in Bos indicus heifers synchronized with norgestomet oestradiol.

Effect of suckling and ovariectomy on the control of luteinizing hormone secretion during the postpartum period in beef cows.

Journal of Neuroendocrinologyv. However, dairy cows that currently develop OFC only present anestrus PeterVanholder et al Risk factors for postpartum ovarian cysts and their spontaneous recovery or persistence in lactating dairy cows.

Amino acid neurotransmitter release in the preoptic area of rats during the positive feedback actions of estradiol on LH release. Embrapa Clima Temperado, Direct and indirect regulation of gonadotropin-releasing hormone neurons by estradiol.

Remote access to EBSCO’s databases is permitted to vaczs of subscribing institutions accessing from remote locations for personal, non-commercial use. No warranty is given about the accuracy of the copy. J Anim Sci ; Suppression of leptin during lactation: Ovarian follicular dynamics in suckled zebu Bos indicus cows monitored by real time ultrasonography.

Role of hypothalamic progesterone receptors. Effect of calf isolation on follicular wave dynamics, gonadotropin and metabolic hormone changes, and interval to first ovulation in beef cows fed either of two energy levels postpartum.

Related Posts