Follicle Size
Mostrando 1-12 de 52 artigos, teses e dissertações.
-
1. Identification of differentially expressed microRNAs in middle-size ovarian follicles of Meishan and Duroc sows
ABSTRACT This study aimed to investigate the roles of miRNA in the development of ovarian follicles in sows with high ovulation rate. The miRNA expression profiles in middle-size ovarian follicles between Meishan and Duroc sows were characterized by Affymetrix miRNA GeneChip. Seven differentially expressed miRNA were identified. KEGG pathways analyzed the pr
R. Bras. Zootec.. Publicado em: 28/11/2019
-
2. Folliculogenesis and acquisition of oocyte competence in cows
Abstract IVF success depends on hundreds of factors and details but the oocyte quality remains the most important and problematic issue. All antral follicles contain oocytes and all of them have that have reached their full size, can be aspirated, can mature and can be fertilized in vitro. But only a few will make it to embryo unless harvested at a very spec
Anim. Reprod.. Publicado em: 28/11/2019
-
3. Environmental effects and repeatability of the follicular diameter in mares
ABSTRACT The objective of this study was to evaluate the effect of environment on follicular diameter and repeatability of the size of preovulatory follicles of mares. Temperature, rainfall, and photoperiod were measured, and their effects were evaluated on follicular dynamics. Data were studied by analysis of variance of follicular size and environment trai
R. Bras. Zootec.. Publicado em: 25/11/2019
-
4. CARACTERIZAÇÃO MOLECULAR DOS COMPONENTES DO SISTEMA ANGIOTENSINA-(1-7) DURANTE A DIVERGÊNCIA FOLICULAR E EXPRESSÃO DE GENES DE REPARO DA FITA DUPLA DE DNA EM EMBRIÕES BOVINOS / MOLECULAR CHARACTERIZATION OF THE ANGIOTENSIN-(1-7) SYSTEM COMPONENTS DURING FOLLICULAR DEVIATION AND EXPRESSION OF DNA DOUBLE-STRANDED REPAIR GENES IN BOVINE EMBRYOS
The first study characterized the expression of MAS receptor and key enzymes for Ang-(1-7) production, such as, ACE2, NEP and PEP during follicular development. Furthermore, the regulation of local Ang1-7 system was evaluated after the intrafollicular injection of fulvestrant (an estradiolreceptor inhibitor) in the dominant follicle. Cows were ovariectomized
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
-
5. Avaliação do tamanho da imagem radiográfica do folículo do germe de incisivos centrais superiores permanentes / Assessment of the size of the radiographic image of permanent upper central incisors dental follicle
Ao entender o desenvolvimento do folículo dental, conhecemos a normalidade, diagnosticamos possíveis alterações, e realizamos o tratamento adequado. Os objetivos foram avaliar: o tamanho e comportamento da imagem radiográfica do folículo do germe de incisivos centrais superiores permanentes e estimar os valores máximos da distância e da área para ca
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/01/2012
-
6. Effect of the ovulatory follicle diameter and progesterone concentration on the pregnancy rate of fixed-time inseminated lactating beef cows
The objective of this study was to evaluate the influence of the ovulatory follicle diameter on the reproductive performance of lactating beef cows subjected to low progesterone fixed-time artificial insemination (FTAI) protocols. Ninety-three lactating beef cows (60-80 days postpartum) at random stages of estrous cycle were given a luteolytic dose of prosta
Revista Brasileira de Zootecnia. Publicado em: 2012-04
-
7. Follicle-stimulating hormone to substitute equine chorionic gonadotropin in the synchronization of ovulation in Santa Inês ewes
The substitution of equine chorionic gonadotropin (eCG) by follicle-stimulating hormone (FSH) in protocols for synchronization of ovulation in Santa Inês ewes was assessed. Ten females were submitted to the insertion of intravaginal sponges containing 60 mg medroxyprogesterone acetate for 10 days; after this period sponges were withdrawn and the animals wer
Revista Brasileira de Zootecnia. Publicado em: 2012-03
-
8. Two new species of Thaumastus (Gastropoda: Pulmonata: Orthalicidae: Bulimulinae) from the state of Minas Gerais, Brazil
Two new species of Thaumastus (Thaumastus) from the state of Minas Gerais, southeastern Brazil, are described. They are diagnosed and characterized by the morphology of the shell and soft parts and compared with Brazilian species of the subgenus Thaumastus s.s. Martens, 1860. Thaumastus (T.) parvus sp. nov. is similar to T. (T.) baixoguanduensis Pena, Coelho
Zoologia (Curitiba). Publicado em: 2011-08
-
9. Social and reproductive physiology and behavior of the Neotropical cichlid fish Cichlasoma dimerus under laboratory conditions
In this work we describe for the first time the social and reproductive behavior of the Neotropical fish Cichlasoma dimerus (Heckel, 1840) [Perciformes: Cichlidae], endemic to the Paraná River basin, using a comprehensive-integral approach, including morphological and physiological features. This substrate breeding fish has biparental care of the fry and pr
Neotropical Ichthyology. Publicado em: 22/07/2011
-
10. Reproduction of the flatfish Achirus lineatus (Pleuronectiformes: Achiridae) in Paranaguá Bay, state of Paraná, a subtropical region of Brazil
The present study characterizes the oogenesis and the ovarian maturation scale, and determines the reproductive period, type of spawning, recruitment period, and population variations in the reproductive process of the flatfish Achirus lineatus (Linnaeus, 1758). Specimens were sampled on a monthly basis in the shallow near shore area of the Paranaguá Bay, s
Zoologia (Curitiba). Publicado em: 2010-08
-
11. Expressão de genes candidatos para a aquisição da competência ovocitária em bovinos
The success of the various assisted reproductive techniques depends on oocyte competence. However, the factors involved on its acquisition and the molecular attributes of competent oocyte are generally unknown. In an attempt to assess genes related with oocyte competence we quantify transcripts for candidate genes in oocytes (H1Foo, H2A, H3A, GHR, GDF9, BMP1
Publicado em: 2009
-
12. Padrão de metilação da DMR do último éxon do gene IGF2 em ovócitos e células do cumulus de vacas nelore
Assisted reproductive biotechnologies are essential instrument for the modern cattle breeding. In vitro embryo production (IVP) is prominence, situating Brazil as a country that more produce and transfer in vitro embryos in the word. In spite of the IVP big capacity to produce embryos per animal, this production can be better, being the oocyte quality the mo
Publicado em: 2009