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1. | | FRENEAU, G. E.; CARVALHO, S. F. M.; MORAIS, S. M. T. S.; FRENEAU, B. N. Aspects of spermatogenesis and microscopic testicular morphology in Greater Rhea, Rhea americana (Linnaeus, 1758). Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 10, p. 1045-1952, out. 2016. Biblioteca(s): Embrapa Unidades Centrais. |
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Registros recuperados : 1 | |
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Registro Completo
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
30/12/2016 |
Data da última atualização: |
29/12/2017 |
Autoria: |
FRENEAU, G. E.; CARVALHO, S. F. M.; MORAIS, S. M. T. S.; FRENEAU, B. N. |
Afiliação: |
GUSTAVO E. FRENEAU, UFG; SAULO F. M. CARVALHO, UFG; SIMONE M. T. SABAOIA MORAIS, UFG; BRENO N. FRENEAU, UFG. |
Título: |
Aspects of spermatogenesis and microscopic testicular morphology in Greater Rhea, Rhea americana (Linnaeus, 1758). |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 10, p. 1045-1952, out. 2016. |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Morfologia microscópica testicular; Parênquima testicular; Testicular morphology; Túbulos seminíferos. |
Thesagro: |
Ema; Espermatogênese; Reprodução; Rhea Americana. |
Thesaurus NAL: |
Ratites; Reproduction; Seminiferous tubules; Spermatogenesis. |
Categoria do assunto: |
-- |
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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