Proliferação celular de estruturas ovarianas de ovelhas pela técnica de coloração AgNOR
The sheep industry now occupies an important place of interest within the livestock farms, requiring the development of studies in the area related to sheep breeding on tropical climate. Most of the wool breed have reproductive seasonality, in other words, cycles are controlled by the fading light o...
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2011 |
| País: | Brasil |
| Institución: | Universidade do Oeste Paulista (UNOESTE) |
| Repositorio: | Biblioteca Digital de Teses e Dissertações da UNOESTE |
| Idioma: | portugués |
| OAI Identifier: | oai:bdtd.unoeste.br:tede/659 |
| Acceso en línea: | http://bdtd.unoeste.br:8080/tede/handle/tede/659 |
| Access Level: | acceso abierto |
| Palabra clave: | Ovis aries Anatomia ovariana Proliferação cellular Técnica AgNOR Ovarian anatomy Celular proliferation AgNOR technique CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
| Sumario: | The sheep industry now occupies an important place of interest within the livestock farms, requiring the development of studies in the area related to sheep breeding on tropical climate. Most of the wool breed have reproductive seasonality, in other words, cycles are controlled by the fading light of the season, on the other hand crossbred sheep usually have already observed reproductive activity throughout the year. The ovarian cortex has follicles and corpus luteumin various stages of development, supported by connective tissue and smooth muscle fibers through the vessels and nerves. Te ovarian marrow is made up of fibroelastic tissue, nerves and arteries, being the innermost part of the ovary. In antral follicles, IGF stimulates the proliferation activity and differentiation of granulosa cells and steroidogenesis. The nucleolar organizer regions (NORs) are loops of deoxyribonucleic acid (DNA) responsible for synthesizing ribosomal ribonucleic acid (rRNA) during interphase, the period of protein synthesis and increase in volume, size and number of cell organelles. Its in the nucleolus, located in the cell nucleus, which has storage and production of rRNA, which will be linked to various proteins to form ribossomes. The AgNOR technique evaluates the NORs of active chromossomes during the cell cycle and the number or area of NORs show that proliferative activity, from the G1 phase of intense production of proteins and RNA, to the maximum in S phase, that have synthesis of DNA, of the cycle. |
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