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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 |
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Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
15/07/2008 |
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Data da última atualização: |
05/07/2023 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
FACO, O.; BOZZI, R.; MARTINS FILHO, R.; LOBO, R. N. B.; MALHADO, C. H. M. |
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Afiliação: |
Olivardo Faco, CNPC; CNPC. |
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Título: |
Efeitos da eliminação das lactações curtas e do ajuste da produção de leite pela duração da lactação sobre a comparação do desempenho produtivo de vacas de seis grupos genéticos Holandês x Gir. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 41., 2004, Campo Grande, MS. A produção animal e a segurança alimentar: anais dos simpósios e dos resumos. Campo Grande, MS: Sociedade Brasileira de Zootecnia: Embrapa Gado de Corte, 2004. 5 f. 1 CD-ROM. |
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Idioma: |
Português |
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Palavras-Chave: |
Bovino de corte; Brasil; Tendência genética. |
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Thesagro: |
Crescimento; Cruzamento; Melhoramento Genético Animal; Parâmetro Genético. |
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Thesaurus NAL: |
Girolando; zebu. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/48574/1/AAC-Efeitos-da-eliminacao.pdf
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Marc: |
LEADER 01083nam a2200253 a 4500
001 1534252
005 2023-07-05
008 2004 bl uuuu u00u1 u #d
100 1 $aFACO, O.
245 $aEfeitos da eliminação das lactações curtas e do ajuste da produção de leite pela duração da lactação sobre a comparação do desempenho produtivo de vacas de seis grupos genéticos Holandês x Gir.$h[electronic resource]
260 $aIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 41., 2004, Campo Grande, MS. A produção animal e a segurança alimentar: anais dos simpósios e dos resumos. Campo Grande, MS: Sociedade Brasileira de Zootecnia: Embrapa Gado de Corte, 2004. 5 f. 1 CD-ROM.$c2004
650 $aGirolando
650 $azebu
650 $aCrescimento
650 $aCruzamento
650 $aMelhoramento Genético Animal
650 $aParâmetro Genético
653 $aBovino de corte
653 $aBrasil
653 $aTendência genética
700 1 $aBOZZI, R.
700 1 $aMARTINS FILHO, R.
700 1 $aLOBO, R. N. B.
700 1 $aMALHADO, C. H. M.
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Embrapa Caprinos e Ovinos (CNPC) |
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