Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 10
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
A new vision of the origin and the oocyte development in the Ostariophysi applied to Gymnotus sylvius (Teleostei: Gymnotiformes) Neotropical Ichthyology
França,Gisleine Fernanda; Grier,Harry J.; Quagio-Grassiotto,Irani.
Based on new knowledge coming from marine perciform species, the origin of oocytes and their development in the Ostariophysi, Gymnotus sylvius is described. In both Gymnotus sylvius and marine perciform fish, oogonia are found in the germinal epithelium that forms the surface of the ovarian lamellae. At the commencement of folliculogenesis, proliferation of oogonia and their entrance into meiosis gives rise to germ cell nests that extend into the stroma from the germinal epithelium. Both cell nests and the germinal epithelium are supported by the same basement membrane that separates them from the stroma. At the time of meiotic arrest, oocytes in a cell nest become separated one from the other as processes of prefollicle cells, these being derived from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Folliculogenesis; Primary growth; Secondary growth; Maturation; Ovulation.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000400008
Imagem não selecionada

Imprime registro no formato completo
Desempenho de ovelhas Pantaneiras submetidas à sincronização de estro e suplementação nutricional de curto prazo antes da estação reprodutiva. Repositório Alice
NEVES, A. P..
Resumo: A eficiência reprodutiva de rebanhos ovinos está na dependência de vários fatores, dentre os mais importantes cita-se a nutrição. Alterações no nível de nutrição podem influenciar a eficácia da maioria das fases da reprodução. Porém, pouco se tem aproveitado deste conhecimento nas criações de ovinos. Portanto, o objetivo deste trabalho foi verificar a influência da suplementação de curto prazo antes da estação monta sobre o desempenho reprodutivo de fêmeas ovinas do grupo genético ?Ovelha Pantaneira? submetidas a protocolos de sincronização de estro. Foram utilizadas 60 fêmeas, divididas aleatoriamente em seis grupos experimentais, sendo três grupos submetidos a protocolo hormonal de indução de estro e submetido a diferentes períodos de...
Tipo: Tese/dissertação (ALICE) Palavras-chave: Grupo genético; Ovelha Pantaneira; Gado Pantaneiro; Foliculogênese; Protocolo hormonal; Folliculogenesis; Hormonal protocol; Ovino; Reprodução animal; Eficiência reprodutiva; Nutrição animal; Suplemento alimentar; Ovulação; Sheep; Reproduction; Reproductive performance; Ovulation; Animal nutrition; Supplementary feeding; Animal feeding.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1065600
Imagem não selecionada

Imprime registro no formato completo
Effect of Ethanol Extract of Whole Plant of Trichosanthes cucumerina var. cucumerina L. on Gonadotropins, Ovarian Follicular Kinetics and Estrous Cycle for Screening of Antifertility Activity in Albino Rats International Journal of Morphology
Kage,Devendra N; Malashetty,Vijaykumar B; Seetharam,Y. N; Suresh,P; Patil,Saraswati B.
Ethanol extract of whole plant of Trichosanthes cucumerina L. var. cucumerina was evaluated for antiovulatory activity in adult rats. The ethanol extract at the doses 200 and 400mg/kg body weight (orally) affected the normal estrous cycle showing a significant increase in estrus and metestrus phases and decrease in diestras and proestrus phases. The extract also significantly reduced the number of healthy follicles (Class I-Class VI) and corpora lutea and increased the number of regressing follicles (Stage IA, Stage IB, Stage IIA, and Stage IIB). The protein and glycogen content in the ovaries were significantly reduced in treated rats. The cholesterol level was significantly increased, whereas, the enzyme activities like 3b-HSD and 17b-HSD were...
Tipo: Journal article Palavras-chave: Trichosanthes cucumerina L. var. cucumerina; Antifertility; Folliculogenesis; Estrous cycle; Gonadotropins; 3 b-HSD; 17 b-HSD activity; Ovarian steroidogenesis.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000100030
Imagem não selecionada

Imprime registro no formato completo
Effects of Natural Environmental Conditions on the Ovarian Histometric Dynamics of Five Striped Squirrels (Funambulus pennanti) International Journal of Morphology
Rehman,Sadia; Mahmood-ul-Hassan,; Qureshi,Anas Sarwar; Akbar,Zeeshan.
The present study was designed to determine the morphological and histological variations in the female palm squirrel's reproductive organs which inhabit croplands of central Punjab. 16 specimens were collected from 3 different locations of Faisalabad district during different months in order to collect their ovaries samples in order to determine the breeding phenology of this species. Body weight and external body measurements were recorded. Two adult females were autopsied each month and their ovaries were extracted. Tissue were prepared by the tissue paraffin technique and stained by H&E. Seasonal variations in the follicular size and shape were observed. Statistical analysis revealed that values of all parameters of ovaries were significantly...
Tipo: Journal article Palavras-chave: Squirrels; Folliculogenesis; Ovaries; Season.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100037
Imagem não selecionada

Imprime registro no formato completo
Efficiency of in vivo embryo production using sorted semen in cattle. Repositório Alice
FIGUEIREDO, A. C. S.; FERNANDES, C. A. C.; NERI, H. L. H.; PEREIRA, G. H. S.; PEREIRA, J. R.; VIANA, J. H. M.; VIEIRA, M. R..
bitstream/item/185493/1/p438-SBTE.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Folliculogenesis; Oogenesis; Superovulation.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1098859
Imagem não selecionada

Imprime registro no formato completo
Endocrine Integration of Fetal Ovaries Grafted under Kidney Capsule of Unilaterally or Bilaterally Orchidectomized Male Hamster International Journal of Morphology
Luna,S. L; Peña,S. I; Cuevas,A. J; Brown,D. I.
Mammalian ovary development undergoes important changes during the perinatal period, moment when follicles are assembled and start to develop in a process not well known, involving endocrine and paracrine factors. In order to investigate the effect of two different hormonal environments on the early development of the ovary, we used an autologous transplant model in which Syrian hamster fetal ovaries were grafted under the kidney capsule of males hosts previously unilaterally or bilaterally orchidectomized. After 35 days of graft, ovaries and kidney parenchyme of the host male did not present signs of rejection. Ovaries contained primordial, primary follicles, secondary follicles and few tertiary follicles with morphological features similar to ovaries of...
Tipo: Journal article Palavras-chave: Ovary; Folliculogenesis; Steroidogenesis; Ovarian graft; Hamster.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000400016
Imagem não selecionada

Imprime registro no formato completo
Extracts of Azadirachta indica and Melia azedarach seeds inhibit folliculogenesis in albino rats BJMBR
Roop,J.K.; Dhaliwal,P.K.; Guraya,S.S..
The seed oil of Azadirachta indica A. Juss (neem) is used in traditional medicine for its antidiabetic, spermicidal, antifertility, antibacterial, and wound healing properties. The present study was undertaken to investigate the quantitative aspects of follicular development in cyclic female albino rats (135 ± 10 g; 8 groups with 6 animals in each group) after oral administration of polar (PF) and non-polar (NPF) fractions of A. indica seed extract at 3 and 6 mg kg body weight-1 day-1 and Melia azedarach Linn. (dharek) seed extract at 24 mg kg body weight-1 day-1 for 18 days. The extracts were prepared using a flash evaporator at 35°C and then dissolved in olive oil to prepare doses on a per kg body weight basis. There was a significant reduction (P =...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Folliculogenesis; Azadirachta; Melia; Plant products; Antifertility.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000600017
Imagem não selecionada

Imprime registro no formato completo
Is the infertility in hypothyroidism mainly due to ovarian or pituitary functional changes? BJMBR
Armada-Dias,L.; Carvalho,J.J.; Breitenbach,M.M.D.; Franci,C.R.; Moura,E.G..
The objective of the present study was to examine whether hypothyroidism affects the reproductive system of adult female rats by evaluating ovarian morphology, uterus weight and the changes in serum and pituitary concentrations of prolactin and gonadotropins. Three-month-old female rats were divided into three groups: control (N = 10), hypothyroid (N = 10), treated with 0.05% 6-propyl-2-thiouracil (PTU) in drinking water for 60 days, and T4-treated group (N = 10), receiving daily sc injections of L-thyroxine (0.8 µg/100 g body weight) during the last 10 days of the experiment. At the end of 50 days of hypothyroidism no hypothyroid animal showed a regular cycle, while 71% of controls as well as the T4-treated rats showed regular cycles. Corpora lutea,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hypothyroidism; Prolactin; Gonadotropins; Folliculogenesis; Estrous cycle.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000900015
Imagem não selecionada

Imprime registro no formato completo
Ovarian Folliculogenesis in the Smallnose Fanskate Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes, Rajidae) International Journal of Morphology
Díaz-Andrade,M. C; Galíndez,E. J; López-Cazorla,A; Estecondo,S.
Chondrichthyes have become an important economic resource in the last decades, with Argentina as one of the countries that exploits more sharks and skates, even at levels that exceed de limits of many species. However, there is a scarce knowledge of the reproductive biology of this group, particularly from species inhabiting the Southern hemisphere. This work shows the most relevant facts during folliculogenesis in Sympterygia bonapartii. Results show that germinal cells are present in immature and maturing females. The most important facts that vary along de follicular development are the number of types and layers of follicular cells, the establishment of thin projections from the follicular cells and the degree of development of the thecae. Follicular...
Tipo: Journal article Palavras-chave: Elasmobranchs; Reproduction; Ovary; Folliculogenesis; Sympterygia bonapartii.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000100030
Imagem não selecionada

Imprime registro no formato completo
Structural and Ultrastructural Aspects of Folliculogenesis in Didelphis albiventris, the South-American Opossum International Journal of Morphology
Cesario,Maria Dalva; Matheus,Selma M. Michelin.
The ovarian histology, the structural and the ultrastructural characteristics of the folliculogenesis in Didelphis albiventris were described in detail. Recent studies suggest that methatherian mammals have unusual reproductive cycle but there are few informations regarding the marsupials reproductive life. Despite of the opossum folliculogenesis pattern resembles methatherian and eutherian pattern in many aspects, the analysis shows some peculiar features of the oocyte structure and ultrastructure that make available new data on the reproductive biology of marsupials.
Tipo: Journal article Palavras-chave: Folliculogenesis; Oocytes; Opossum; Marsupial.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000100019
Registros recuperados: 10
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional