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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
30/12/2016 |
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Data da última atualização: |
29/12/2017 |
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Autoria: |
FRENEAU, G. E.; CARVALHO, S. F. M.; MORAIS, S. M. T. S.; FRENEAU, B. N. |
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Afiliação: |
GUSTAVO E. FRENEAU, UFG; SAULO F. M. CARVALHO, UFG; SIMONE M. T. SABAOIA MORAIS, UFG; BRENO N. FRENEAU, UFG. |
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Título: |
Aspects of spermatogenesis and microscopic testicular morphology in Greater Rhea, Rhea americana (Linnaeus, 1758). |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 10, p. 1045-1952, out. 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
The purpose of this study was to study the microscopic morphology of the testicular parenchyma of Rhea americana birds. Fifty-four 2.5±0.5 year-old male adults bred in captivity. were used. During commercial slaughter, samples of testis were collected in November/2005, December/2006 and May/2007, in order to compare possible differences. The samples underwent optical microscopy analysis and measurements of seminiferous tubule (ST) total diameters, lumen, epithelium thickness and the relative volume of parenchyma. The ST had circular form in transverse cross sections. November/2005 and December/ 2006 samples had many types of germinative cells and spermatozoa in lumen, but in May/2007 the samples of epithelium were poor regarding meiotic and mitotic pictures, and it was difficult to find any spermatozoon; in many tubules the lumen was inexistent or diminished. In December/2006 and May/2007 the averages were: tubule diameter 110.3 and 5.3m?, lumen 52.4 and 4.5m?, epithelium hickness 57.8 and 0.7m? respectively. The olumetric proportions were: seminiferous epithelium 75.6 and 75.9, cysts in epithelium 2.1 and 1.0, ST 93.3 and 84.0, interstitium 6.2 and 15.6 respectively. The sperm reserves were: 19.7±2 and 0±0 x109 sperm cells in December 2006 and May 2007 respectively. Microscopic measures of seminiferous tubules, spermatic cells and diameter of the nuclei were presented. These data confirm reproductive seasonality, with breeding season in spring-summer with sperm production. A great variation n parenchyma, when compared breeding was noticeable. MenosThe purpose of this study was to study the microscopic morphology of the testicular parenchyma of Rhea americana birds. Fifty-four 2.5±0.5 year-old male adults bred in captivity. were used. During commercial slaughter, samples of testis were collected in November/2005, December/2006 and May/2007, in order to compare possible differences. The samples underwent optical microscopy analysis and measurements of seminiferous tubule (ST) total diameters, lumen, epithelium thickness and the relative volume of parenchyma. The ST had circular form in transverse cross sections. November/2005 and December/ 2006 samples had many types of germinative cells and spermatozoa in lumen, but in May/2007 the samples of epithelium were poor regarding meiotic and mitotic pictures, and it was difficult to find any spermatozoon; in many tubules the lumen was inexistent or diminished. In December/2006 and May/2007 the averages were: tubule diameter 110.3 and 5.3m?, lumen 52.4 and 4.5m?, epithelium hickness 57.8 and 0.7m? respectively. The olumetric proportions were: seminiferous epithelium 75.6 and 75.9, cysts in epithelium 2.1 and 1.0, ST 93.3 and 84.0, interstitium 6.2 and 15.6 respectively. The sperm reserves were: 19.7±2 and 0±0 x109 sperm cells in December 2006 and May 2007 respectively. Microscopic measures of seminiferous tubules, spermatic cells and diameter of the nuclei were presented. These data confirm reproductive seasonality, with breeding season in spring-summer with sperm production. ... Mostrar Tudo |
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Palavras-Chave: |
Morfologia microscópica testicular; Parênquima testicular; Testicular morphology; Túbulos seminíferos. |
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Thesagro: |
Ema; Espermatogênese; Reprodução; Rhea Americana. |
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Thesaurus Nal: |
Ratites; Reproduction; Seminiferous tubules; Spermatogenesis. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/152599/1/Aspects-of-spermatogenesis.pdf
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Marc: |
LEADER 02526naa a2200301 a 4500
001 2059720
005 2017-12-29
008 2016 bl uuuu u00u1 u #d
100 1 $aFRENEAU, G. E.
245 $aAspects of spermatogenesis and microscopic testicular morphology in Greater Rhea, Rhea americana (Linnaeus, 1758).$h[electronic resource]
260 $c2016
520 $aThe purpose of this study was to study the microscopic morphology of the testicular parenchyma of Rhea americana birds. Fifty-four 2.5±0.5 year-old male adults bred in captivity. were used. During commercial slaughter, samples of testis were collected in November/2005, December/2006 and May/2007, in order to compare possible differences. The samples underwent optical microscopy analysis and measurements of seminiferous tubule (ST) total diameters, lumen, epithelium thickness and the relative volume of parenchyma. The ST had circular form in transverse cross sections. November/2005 and December/ 2006 samples had many types of germinative cells and spermatozoa in lumen, but in May/2007 the samples of epithelium were poor regarding meiotic and mitotic pictures, and it was difficult to find any spermatozoon; in many tubules the lumen was inexistent or diminished. In December/2006 and May/2007 the averages were: tubule diameter 110.3 and 5.3m?, lumen 52.4 and 4.5m?, epithelium hickness 57.8 and 0.7m? respectively. The olumetric proportions were: seminiferous epithelium 75.6 and 75.9, cysts in epithelium 2.1 and 1.0, ST 93.3 and 84.0, interstitium 6.2 and 15.6 respectively. The sperm reserves were: 19.7±2 and 0±0 x109 sperm cells in December 2006 and May 2007 respectively. Microscopic measures of seminiferous tubules, spermatic cells and diameter of the nuclei were presented. These data confirm reproductive seasonality, with breeding season in spring-summer with sperm production. A great variation n parenchyma, when compared breeding was noticeable.
650 $aRatites
650 $aReproduction
650 $aSeminiferous tubules
650 $aSpermatogenesis
650 $aEma
650 $aEspermatogênese
650 $aReprodução
650 $aRhea Americana
653 $aMorfologia microscópica testicular
653 $aParênquima testicular
653 $aTesticular morphology
653 $aTúbulos seminíferos
700 1 $aCARVALHO, S. F. M.
700 1 $aMORAIS, S. M. T. S.
700 1 $aFRENEAU, B. N.
773 $tPesquisa Veterinária Brasileira, Rio de Janeiro$gv. 36, n. 10, p. 1045-1952, out. 2016.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
17/12/2015 |
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Data da última atualização: |
17/12/2015 |
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Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
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Autoria: |
SANTOS, A. B. dos; STONE, L. F.; SILVA, S. C. da. |
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Afiliação: |
ALBERTO BAETA DOS SANTOS, CNPAF; LUIS FERNANDO STONE, CNPAF; SILVANDO CARLOS DA SILVA, CNPAF. |
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Título: |
Estratégia de irrigação para a cultura do arroz na Região Tropical. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2015. |
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Páginas: |
6 p. |
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Série: |
(Embrapa Arroz e Feijão. Comunicado técnico, 231). |
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ISSN: |
1678-961X |
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Idioma: |
Português |
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Conteúdo: |
Este documento visa facilitar o entendimento do leitor sobre a influência do manejo da irrigação na cultura de arroz irrigado na região tropical. |
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Palavras-Chave: |
Região Tropical. |
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Thesagro: |
Arroz; Irrigação; Manejo de água; Oryza sativa; Prática cultural. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/135791/1/CNPAF-ct231.pdf
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Marc: |
LEADER 00860nam a2200241 a 4500
001 2031885
005 2015-12-17
008 2015 bl uuuu u0uu1 u #d
022 $a1678-961X
100 1 $aSANTOS, A. B. dos
245 $aEstratégia de irrigação para a cultura do arroz na Região Tropical.$h[electronic resource]
260 $aSanto Antônio de Goiás: Embrapa Arroz e Feijão$c2015
300 $a6 p.
490 $a(Embrapa Arroz e Feijão. Comunicado técnico, 231).
520 $aEste documento visa facilitar o entendimento do leitor sobre a influência do manejo da irrigação na cultura de arroz irrigado na região tropical.
650 $aArroz
650 $aIrrigação
650 $aManejo de água
650 $aOryza sativa
650 $aPrática cultural
653 $aRegião Tropical
700 1 $aSTONE, L. F.
700 1 $aSILVA, S. C. da
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Embrapa Arroz e Feijão (CNPAF) |
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